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A roads in Zone 4 of the Great Britain numbering scheme

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Looking north up the A441 Alvechurch Bypass from the roundabout at the junction of the A441 and B4120 roads between Alvechurch and Bordesley, Worcestershire, England

The numbering zones for A-roads in Great Britain

List of A roads in zone 4 in Great Britain starting north of the A4 and south/west of the A5 (roads beginning with 4).

Single- and double-digit roads

[edit]
Road From To Notes
A4 City of London (Holborn Circus) Avonmouth Originally London to Bath
A40 City of London (near St. Paul's Cathedral) Fishguard The longest A road in Zone 4 at 256 miles long
A41 Central London (near Marble Arch) Birkenhead A large section of the former A41, from Bicester to Solihull, was downgraded when the northern extension of the M40 motorway was opened, as was a section in Birmingham due to other road improvements; most of it is now the non-contiguous B4100. A41 rerouted along new dual carriageway, Black Country New Road, between West Bromwich and Wednesbury. Old route through Hill Top renumbered A4196.
A42 Kegworth Appleby Magna A continuation of the M42, hence the use of A42 despite being entirely in Zone 5. Previously allocated to a road from Reading to Birmingham; this became part of the A329, the A423 (this section now the A4074 and A4158), and the A34 (section from Oxford to the M42 is now the A4144, A44, A3400).
A43 M40 motorway Junction 10 north of Bicester Stamford Formerly continued along present route of B430.
A44 Oxford Aberystwyth Officially the most dangerous road in Wales between Aberystwyth and Llangurig.[1] Route between Evesham and A422 originally designated A4538.
A45 Birmingham Thrapston Previously continued along route of current A14 to Felixstowe
A46 Bath Cleethorpes The section from Cheltenham to Heath End (North of Stratford on Avon) was mostly reclassified as B4632 and much of what was previously the A435 from Cheltenham to Bidford was renamed the A46. A piece of A438 from M5 J9 to Teddington also became part of the A46.
A47 Birmingham Lowestoft The original section between Birmingham and Nuneaton has mostly been now de-classified to B-roads, while the section between Nuneaton and Leicester via Hinckley has been largely de-trunked since the M69 runs a similar route. A12 from Great Yarmouth to Lowestoft redesignated as A47 in 2017.
A48 Highnam near Gloucester Carmarthen Originally began in Worcester. Worcester to Newport is now A449.
A49 Ross-on-Wye Bamber Bridge

Triple-digit roads

[edit]

Only roads that have individual articles have been linked in the "Road" column below.

Road From To Notes
A400 Central London
(Trafalgar Square)
Archway Takes the route of the Northern line, Charing Cross Branch and High Barnet Branch
A401 Central London
(Piccadilly Circus)
Angel
A402 Central London
(Marble Arch)
Stamford Brook, Chiswick
A403 M48 motorway,
J1 near Aust
Avonmouth A road of the same number ran down Western Avenue, London until 1946 when the A40 was diverted along the route.
A404 Central London
(Edgware Road station
A404(M) Junction 9B near Maidenhead The London section is called Harrow Road for most of its length. Originally ran through Pinner, but now by-passes it using parts of the old A410 and A4090 and the old route through Pinner has now been declassified
A405 Leavesden Green Near Park Street
A406 Gunnersbury Beckton The North Circular Road
A407 Harlesden Child's Hill Through Willesden including the High Road and Cricklewood
A408 Heathrow Airport Uxbridge The southern section in Sipson due to be demolished to make way for Heathrow Airport 3rd runway
A409 Northwick Park Hospital Bushey through the middle of Wealdstone and the western part of Stanmore known as Stanmore Common
A410 Pinner Edgware Uxbridge Road, through Stanmore Broadway, then London Road and Spur Road meeting the A41. Original western section now part of A404
A411 Watford Barnet Meets the A41 twice between which it goes through the centre of Watford, Bushey Arches and Bushey Heath, then through the northern part of Elstree, across Stirling Corner through Arkley and into Barnet
A412 Slough Garston
A413 Gerrards Cross Towcester
A414 Near Hemel Hempstead Maldon Section from Hemel Hempstead to the Park Street Roundabout was the M10 before 2009.
A415 Berinsfield Witney
A416 Amersham Berkhamsted
A417 Streatley Leominster
A418 M40 motorway J8a Ascott, Buckinghamshire
A419 Whitminster Swindon
A420 Bristol Oxford
A421 Croughton Wyboston Forms the H8 Standing Way in Milton Keynes.
A422 Bedford Worcester Concurrent with the A46 between Stratford-upon-Avon and Alcester. Forms the H3 Monks Way in Milton Keynes.
A423 Hinksey Hill Coventry Formerly ran from Maidenhead to Tamworth via Oxford and Banbury and Coventry, and a small section of this remains as part of the Oxford Ring Road. Now begins its former route at Banbury. Section beyond Coventry now B4098 and A51.
A424 Burford A44 near Bourton-on-the-Hill
A425 Daventry Warwick Route between the junctions with the A452 and the A46 previously part of A41.
A426 Leicester Southam
A427 Market Harborough Oundle
A428 Coventry Cambridge This road is now split in two parts between Great Barford and Eaton Socon due to the extension of the A421 to the A1.
A429 Chippenham Coventry
A430 Quedgeley Longford, Gloucester Canal in Gloucester realigned in 2006 as part of A430 Western Relief Road construction.
A431 Bristol Bath
A432 Bristol Old Sodbury
A433 A46 at Dunkirk A429 SW of Cirencester
A434 Unused Used to run from the A429 near Malmesbury to the A38 near Hardwicke, south of Gloucester. Malmesbury–Nailsworth section now B4014; section north of Stroud became part of A419, now part of B4008.
A435 Birmingham Cirencester Concurrent with the A46 between Alcester and Teddington Hands
A436 A417 near Brockworth A44 near Salford, Oxfordshire
A437 Harlington, London A40 Western Avenue near Ickenham Originally Gloucester to Newport, now A48.
A438 M5 motorway Junction 9 A470 near Llanfilo
A439 Stratford-upon-Avon A46 4 miles SW of Warwick
A440 Reserved Reserved for Bristol Road. Used to run from Pershore to Great Malvern (now B4211 and A4104). Crossed River Severn on swingbridge (demolished 1940) in Upton-upon-Severn.
A441 Birmingham Cookhill Previously continued along present alignment of B4088.
A442 Droitwich Whitchurch
A443 Worcester Newnham Bridge
A444 Coventry Burton upon Trent Short gap in Coventry due to incomplete construction of Phoenix Way.
A445 Warwick A45 at Ryton-on-Dunsmore
A446 Little Packington Roughley
A447 Hinckley Coalville The original route through Hinckley was by-passed by a new road completed in the early 1990s
A448 Kidderminster Studley, Warwickshire The original route between Bromsgrove and Redditch was by-passed by a dual carriageway in the 1970s after Redditch was developed into a new town
A449 Newport Stafford Used to continue beyond M4. Route to M5 motorway previously A4538.
A450 Torton West Hagley Originally continued along present alignment of B4187.
A451 Stourbridge Great Witley
A452 Leamington Spa Brownhills Known as Chester Road for most of route between A5 and M42. Link road between A425 and M40 J14 previously A41.
A453 Nottingham Birmingham (Perry Barr) Concurrent with A5127 (former A38) in Sutton Coldfield. Part of old route reinstated as A453 to serve East Midlands Airport.
A454 Bridgnorth Four Oaks The section through Willenhall was renumbered in the 1970s following the completion of The Keyway by-passing the south of the town, and further reumbering took place in 1995 on the completion of the Black Country Route. Used to continue direct to Bridgnorth town centre. Rerouted along new alignment to meet A458 near Stanmore when bypass opened.
A455 Unused Used to run from M4 junction 24 in Ringland, Newport to George Street Bridge. Now part of the A48 Southern Distributor Road and rest is now Corporation Road. The original A455 ran from Birmingham to Stafford until 1935 when it became part of an extension to the A34.
A456 Birmingham Woofferton The section through Halesowen was renumbered to B4183 and A458 when the by-pass opened in the 1960s. Originally started on A41 in city centre, it later started on the Inner Ring Road but now starts on the Middle Ring Road (A4540).
A457 Birmingham Sedgley The original route through Smethwick town centre was renumbered when a by-pass opened in about 1970. Also used to pass through Oldbury town centre. Has two branches in Sedgley: Tipton Road and Gate Street.
A458 Mallwyd Quinton Originally started in Cross Foxes Inn. Further renumberings have taken place over the years, notably when the town of Bridgnorth was by-passed in 1985, and when the western section became part of the A470. Section between Halesowen and Quinton previously A456.
A459 Halesowen Wolverhampton Renumbering took place when Dudley town centre was by-passed by a new route of the A461 in 1999. The road continued south of Halesowen towards Bromsgrove until the 1970s. Also used to meet Ring Road in Wolverhampton but now terminates at A4123, Grove Street. Until the 1960s ran down Dudley Street in Wolverhampton. After this road was pedestrianised, followed route of B4158, B4160 and part of A460 via Garrick Street, Market Street, Princess Street and Stafford Street to Five Ways. However Stafford Street was taken over by the A449 when old A449, Waterloo Road, declassified in 1980s.
A460 Wolverhampton Rugeley The section through the centre of Cannock was renumbered A4601 in 1989 when the town's by-pass opened. Currently only link to M6 North from M54 Junction 1. Originally terminated in Princes Square in Wolverhampton.
A461 Lichfield Wollaston, West Midlands Concurrent with the A41 between Wednesbury & Great Bridge. Previously passed through Brierley Hill town centre. Old route through Dudley town centre renumbered or declassified when bypass opened in 1999. In 2008, the bypass was named Duncan Edwards Way.
A462 Essington Wednesbury The section through Darlaston town centre became unclassified when a new by-pass opened in the late 1960s
A463 Wombourne Willenhall The section beyond Coseley was either renumbered or became unclassified when the Black Country Route was completed between 1986 and 1995. Part of former route in Bilston replaced by A4039 and B4484. Concurrent with A454 between The Keyway and Armstrong Way.
A464 Oaken Hollinswood Primary route between Wolverhampton and Telford for non-motorway vehicles via Albrighton and Shifnal
A465 Bromyard M4 motorway Junction 45, Llandarcy
A466 King's Thorn Chepstow
A467 Duffryn, Newport A465, Brynmawr
A468 Bassaleg, Newport A470, Nantgarw
A469 A4161, Roath, Cardiff A465, Rhymney
A470 Cardiff Llandudno Original north end was at Brecon. Later extended north.
A471 Unused Ran from Abergavenny to Usk. In 1935 the section from Abergavenny to Llanvihangel Gobion became part of a rerouted A40 and the remainder was downgraded to the B4598 in the 1970s.
A472 Treharris Usk
A473 Pontypridd Bridgend Originally started at Treforest but following the completion of the Church Village bypass it now starts at Upper Boat and the section between Treforest and Gwaun Meisgyn is now downgraded to the B4595.
A474 Briton Ferry Ammanford
A475 Newcastle Emlyn Lampeter
A476 Llanelli Llandeilo
A477 St Clears Johnston
A478 Cardigan Tenby
A479 Glanusk Llyswen Runs through the heart of the Brecon Beacons in Wales. Originally went northwest to Rhayader, but this section became part of the A470.

Another A479 runs along Empire Way, Wembley (North West of London); this was formerly B4565 until 2007.

A480 A44 at Lyonshall A438 west of Hereford
A481 Somewhere near Llanfihangel, Llandegley Llanelwedd
A482 Aberaeron Llanwrda
A483 Swansea Chester by way of Wrexham. Becomes A5 road in the vicinity of Oswestry.
A484 Cardigan Cadle near Swansea by way of Newcastle Emlyn, Carmarthen and Llanelli
A485 Tanerdy Llanfarian
A486 New Quay A484 near Saron
A487 Haverfordwest Bangor
A488 Penybont Shrewsbury
A489 Craven Arms Machynlleth
A490 Churchstoke Llanfyllin
A491 Lydiate Ash Wall Heath Used to terminate in Bromsgrove.
A492 Unused Used to run from Llangurig to Newtown (now A470 and A489).
A493 Machynlleth Dolgellau Via Tywyn
A494 Queensferry Dolgellau Extension to M56 motorway opened late 2008.
A495 A525 west of Whitchurch A5 outside Oswestry Previously met A483 closer to Oswestry, now truncated by Oswestry bypass.
A496 Llanelltyd Blaenau Ffestiniog Via Barmouth; originally went north to Llandudno (this became part of the A470).
A497 Porthmadog Nefyn
A498 Pen-y-Gwryd Porthmadog
A499 A487 Abersoch

Four-digit roads (40xx)

[edit]
Road From To Notes
A4000 A406 in Acton Town A404 in Harlesden Originally began at the A4 in Chiswick (this section is now part of the A406) and originally ended at the A407 (this section is now unclassified).
A4001 Hanwell Hanwell Still signed, but may not exist because it and the A3002 form a one way pair.
A4002 Unused Was the Tubbs Road / Nightingale Road one-way system in Harlesden, now unclassified.
A4003 Brondesbury Willesden Willesden Lane
A4004 Unused Was a road in Harlesden from the A407 to the A404 (now part of the A407 and the old A407 is now Craven Park, an unusual road name).
A4005 West London
(Hanger Lane Gyratory)
Roxeth
A4006 Harrow West Hendon Also known as Kenton Road and Kingsbury Road
A4007 Iver Heath Uxbridge
A4008 Hatch End Watford Originally ran from Hurley to Temple, cutting the corner between what was then the A415 (later A423, now A4130) and A416 (now A404). Renumbered as a spur of the A423 in 1935, but has since been declassified after dualling of the A404 and downgrading of the A423 to A4130.
A4009 Unused Ran from the A32 (now A4155) in Caversham to the A415 (now A423) in Nettlebed. Downgraded to a southern extension of the B481.
A4010 High Wycombe Aylesbury
A4011 Unused Ran from the A413 in Wendover to the A41 in Aston Clinton. Downgraded to an extension of the B4009 after the towns it connected were bypassed.
A4012 Hockliffe A4146
A4013 Kingsditch Benhall Originally a link road in Aylesbury; became a portion of the A41, but is now declassified. A portion of the route is now gone, with a shopping center built on top.
A4014 Unused Ran along Gravel Walk from the A417 to the A420 (now B4019) in Faringdon; this became part of a rerouted A417, while the old route of the A417 is now an extended A4095, London Street, and Stanford Road.
A4015 Cheltenham Cheltenham Originally ran along Kings Hill Road and Bath Road in Swindon, linking the A361 to the A420. Renumbered to the A4289; was possibly the B4006 before this.
A4016 Unused Ran along St. James Parade, Monmouth Street and Monmouth Place in Bath. When the A4 was extended in 1935, the A4016 became entirely in Zone 3 and was renumbered as a spur of the A367. The central section was declassified after WWII.

May have been used in Cheltenham along the former route of the A46; number is not shown on maps but does appear in a DfT road list from around 2002. A 1972 OS map indicates that this version of the A4016 dates from the late 1960s or early 1970s, possibly before construction of the M5 through the town. The route through the town center is now unclassified, Lower Winchcombe Street returned to the A46, Upper Winchcombe Street is now part of the A435, and the remainder is now the B4632.

A4017 Kingswood A4174 at Bromley Heath Soundwell Road
A4018 Bristol Cribbs Causeway
A4019 Coombe Hill Cheltenham
A4020 Shepherd's Bush     Denham Known as the Uxbridge Road for most of its length (with short stretches known by other names). Follows the former route of the A40.

Originally ran from Beeches Green to Cairnscross. Became a portion of the A419 in 1935 when it was rerouted.

A4021 Unused Ran from A440 (now B4211) in Rhydd to Powick (became the B4424 at the same time the A440 became the B4211).
A4022 Unused Ran from A441 to A448 in Redditch via Plymouth Road.
A4023 Redditch Matchborough Used to run from Redditch to Coventry but nearly all the section has been downgraded to the B4101 upon completion of the M42 in 1986.
A4024 Unused Ran from A448 (now B4184) in Aston Fields to A38 (now B4094) Stoke Heath. mostly became part of the A38 when the eastern bypass was complete, rest is now Stoke Road.
A4025 Stourport-on-Severn     A449
A4026 Shenstone Little Aston Known as Little Aston Lane. Has a weight limit imposed in a northerly direction only. Unsigned from A454.
A4027 Unused Ran from A47 to A41 in Birmingham. Absorbed into the A4400 and is now part of the B4100.
A4028 Unused Ran from the A38 and A455 to the A47 in Birmingham. Absorbed into the A4400 and now part of the B4100 (or B4114).
A4029 Edgbaston Edgbaston Pebble Mill Road, dual carriageway, formerly home to the BBC Pebble Mill Studios.
A4030 Bearwood Smethwick From around 1930 to the mid-1960s, this road continued along the route of the present A4040 to the A441 just north of Kings Norton.
A4031 Smethwick Walsall
A4032 Bristol Bristol Continuation of the M32 to the A4044 inner ring road.

Originally ran along Park Road in Hagley; declassified when the A491 bypass was built.

A4033 A4123 near Dudley Oldbury Previously also met A461 at Burnt Tree Island, Dudley. When the island was removed and replaced with the current traffic light junction, the A4033 was rerouted to a separate junction with the A4123.
A4034 Quinton West Bromwich
A4035 Unused Used to run from West Bromwich to Great Bridge where it joined the A461 towards Dudley. This road was downgraded to an unclassified road (Great Bridge Street) upon the completion of the Black Country Spine Road in 1995.
A4036 Dudley Pedmore
A4037 Wednesbury Dudley Leabrook Road, Great Bridge to Wednesbury formerly A461.
A4038 Walsall Moxley
A4039 Bilston Penn, West Midlands Short extension in Bilston along former A463 alignment (Coseley Road).
A4040 Birmingham Outer ring road. Most of route covered by Outer Circle bus service 11. The section from the A456 in Bearwood to the A38 in Selly Oak was originally numbered B4123. In the 1930s the road beyond Harborne (current end of the A4123) was upgraded to form part of the A4123 (which continued to the A441 north of Kings Norton) before becoming the A4030. It was designated A4040 in the 1960s. As part of the Selly Oak "triangle" development, the former Eastbound carriageway (Chapel Lane) was renumbered B3800 as Harborne Lane was dualled.

Originally ran from Wall Heath to Kidderminster which became a portion of the A449 in 1935.

A4041 West Bromwich Streetly Originally ran east of Kidderminster, bypassing the town. Became a portion of the A449 in 1935.
A4042 Abergavenny A48, Newport
A4043 Blaenavon B4246 Pontypool, A472
A4044 Redcliffe, Bristol St James Barton, Bristol Bristol Inner Circuit: Redcliffe Way, Temple Way, Bond Street

Originally ran from Crumlin to Brynmawr. Renumbered as a northern extension of the A467 in 1935.

A4045 Unused Ran from Blaina Road to the A465 (now A4047) in Brynmawr. Now the B4248.

Number later used for Victoria and Newmarket streets between the A438 and A49 in Hereford. Became the A438 and A49 due to pedestrianization in Hereford.

A4046 A465, Rassau A467, Aberbeeg
A4047 A4048, Tredegar A465, Brynmawr Originally ran from Ebbw Vale to Waun-y-Pound; now a spur of the A4046.
A4048 A467, Crosskeys A465, Tredegar
A4049 A4048Pontllanfraith A469, New Tredegar
A4050 A4232, Culverhouse Cross, Cardiff A4055, Barry Originally ran from Pengam to Tir-Phil; renumbered as a northern extension of the A469 in 1935.
A4051 Newport North Cwmbran Originally ran along Dyvenor Street in Merthyr Tydfil.
A4052 Unused First used on a short section of old A40 along Blue Street in Carmarthen (the remainder became the A4116). Declassified due to town center development.

Also used in Newport linking the A48 to the docks near Watch House Parade. Later renumbered as an extension of the A4042 and has since been declassified; the completion of the A4042/A48 rendered the route redundant.

A4053 Coventry Inner Ring Road

Originally ran across the southern side of Cardiff city center from the A48 to the A4055. Later renumbered as an extension of the A4055 and is now part of the A4160 after the A4055 was rerouted.

A4054 A4119, Llandaff, Cardiff A470, Cefn-Coed-y-Cymmer
A4055 A4232, Cardiff Bay, Cardiff Barry Island, Barry
A4056 Unused Ran from the A48 in Ely to the A470; now part of the A48. Was planned to be replaced by the A48(M) Llantrisant Radial, but this was never built.
A4057 Unused Ran along Bedwas road in Caerphilly, cutting the corner between the A468 and A469. It became a spur of the A469 in 1935 and is now part of the B4600.

Number later used in the late 1970s for the Droitwich Spa bypass; became a portion of the A38 in the early 1980s.

A4058 A470, Pontypridd A4061, Treorchy Originally started at Glyntaff but the sections between Glyntaff, Treforest and Pontypridd was downgraded to the B4595 following the completion of the Church Village bypass. This road originally ran through the village of Trealaw but following the completion of the Rhondda by-pass the section between Porth and Llwynypia was downgraded to the B4278 and the road now runs through the village of Dinas where the B4278 originally ran and also the former part of the A4119 near Llwynypia.
A4059 A470, Abercynon A470, Between Brecon and Cefn-Coed-y-Cymmer
A4060 A470, Pentrebach A465, Dowlais Top Originally ran along Market Street (the 1922 Draft Road Lists claim Wyndham Street) from the then-A48 to the A4061 in Bridgend. Made redundant by completion of the A4061 and is now part of the pedestrianized area in Bridgend town center.
A4061 Bridgend Hirwaun
A4062 Unused Ran along Wigan Terrace between the A4061 and A4065 in Glamorgan. Became a branch of the A4065 in 1935; declassified after 1989 when the A4065 was rerouted.

Number later used between the A40 and A438 near Brecon as an upgrading of the B4557. Downgraded to the B4602 except for the southern end, which is unclassified.

A4063 Bridgend Cymmer
A4064 Sarn Blaengarw
A4065 Tondu Brynmenyn
A4066 St Clears Pendine Via Llanmiloe and Laugharne

Originally ran from Hirwaun to Brecon Beacons. Renumbered as an extension of the A4059 in 1935.

A4067 West Cross, Swansea Sennybridge
A4068 Gurnos Brynamman Originally ran along part of the Swansea Valley from Morriston to Ystalyfera. Renumbered as a northern extension of the A4067 in 1935; much of the route is now the B4603 except the northernmost section which is unclassified. Another portion was closed and abandoned altogether following a landslide in 1965.
A4069 Llandovery Gwaun-Cae-Gurwen Originally ran along Castle Street and Wind Street in Swansea. Renumbered as a portion of the A483 in 1935 and is now part of the B4489.
A4070 Unused Ran from the A483 in Fforestfach to the A484 east of Loughor Bridge. Reclassified in the 1990s as the B4620 due to construction of a new approach road to Loughor Bridge (now the A484).
A4071 Dunsmore Heath Rugby Originally ran between the then-A40 and A474 in Llandelio. Now unclassified.
A4072 Unused First used in 1922 south of Narberth between the A40 and A478. After the A40 was rerouted in the late 1920s, the A4072 was downgraded to an extension of the B3415 as it no longer met a Class I road at its eastern end.

Used again in 1935 from A468 at Tredegar Park to A467 (now B4591) at Rogerstone after the B4242 and B4243 were upgraded to Class I status. The southern section became part of the A467 in 1983 and the remainder was declassified.

A4073 Unused Originally ran between the A40 and A478 east of Narberth. After the A40 was rerouted in the late 1920s, the A4073 no longer had a Class I road to start from and was downgraded to a spur of the B4314.

Used again in 1935, cutting the corner between the A438 and A479 in Llyswen and was the B4344 before it was upgraded to Class I status. Now part of the A470.

A4074 Iffley Caversham Links Reading with Oxford

Originally ran between Narberth and Narberth Castle along High Street. When the A40 was rerouted in the late 1920s, the A4074 was downgraded to Class II status as the B4313, but is now part of the A478 one-way system.

A4075 Canaston Bridge Pembroke
A4076 Haverfordwest Milford Haven
A4077 Crickhowell Gilwern & Govilon
A4078 Talgarth Three Cocks
A4079 Three Cocks Llyswen
A4080 Menai Bridge A55 Originally ran between Llanwrda and Abermorlain. Renumbered as a portion of the A483 in 1935, but became part of the A40 after World War II.
A4081 Llandrindod Wells Newbridge-on-Wye
A4082 Whitley, Coventry Binley, Coventry Called Allard Way between B4110 and A428. The section between Whitley and the B4110 was originally part of the A423. The A4082 was previously the designated number for a short stretch of the current A4081 in Llandrindod Wells (Ithon Road and Spa Road).
A4083 Unused Ran from the A5 southeast of Oswestry to A483 in Oswestry. Became the A5 and B4579 due to completion of the A483 Oswestry bypass and rerouting of the A5.
A4084 Unused Originally ran from Mallwyd to Dolgallau. Became a portion of the A458 in 1935 when it was extended west and is now part of the A470 after it was extended north in the 1970s.

Next used in 1935 from the A489 near Cemmaes to Mallwyd on an old section of the A491 (the remainder became the A458, which ironically replaced the original A4084). Became a portion of the A470 in the 1970s after it was extended.

A4085 Minffordd Caernarfon The current route was formerly A487 before it swapped numbers. First used from the A44 in Llangurig to the A492 east of town, forming one side of a triangle. Became a spur of the A492 in 1935, but after the A492 was declassified and closed in the 1980s, the route became part of the A470.

Next used in 1935 from the A489 in Tremadog to the A499 in Llanwrda; this was originally the B4410 before it was upgraded to Class I status. Became a part of the A487 in the 1960s after it swapped numbers; the old route of the A487 is now the current A4085.

A4086 Capel Curig Caernarfon
A4087 Bangor Bangor Originally ran from the A5 at the south side of the Menai Suspension Bridge to the A499 near Capel-y-Graig. Became a portion of the A487 when it was extended north to the A5.
A4088 Willesden Sudbury, London
A4089 Alperton Wembley Park
A4090 Wembley North Harrow Used to run beyond North Harrow along George V Avenue to Hatch End, but this became part of the A404 in the 1980s.

Originally ran from the A404 to the A416 in Amersham. Became a spur of the A404 in 1935 and is now part of the A4154.

A4091 Tamworth Wishaw
A4092 Tonyrefail Llangeinor
A4092 Bearwood Cape Hill Duplicate number. Connects A457 to A4030.
A4093 Rhondda Llangeinor
A4094 Loudwater Maidenhead
A4095 Faringdon Bicester
A4096 Unused Ran from A38 in Claypits to A419 (now Bath Road, Alkerton Road and Spring Hill); section east to Stonehouse became part of the A419 when the M5 was built, while the old route of the A419 became the B4008.
A4097 Minworth Kingsbury The current A4097 was originally mostly unclassified except for the part between Minworth and A446 which originally formed part of the B4141 (which briefly started at Salford Circus) before the section now part of the A38 became the A4097. The B4141 was then extended to the A423 (now A51) near Kingsbury. Upon completion of the Sutton Coldfield bypass, the A38 took over the route of the A4097 and the B4141 was then upgraded to the A4097 as it is today.
A4098 Moxley Wednesbury
A4099 Halesowen Blackheath

Four-digit roads (41xx)

[edit]
Road From To Notes
A4100 Blackheath Brierley Hill
A4101 Kingswinford Dudley Section from Scotts Green Island to Dudley town centre previously A461. Between 1922 and 1925 this route was numbered B4177.
A4102 Amblecote Duplicate number. Amblecote A4102 is one way street running between A461 and A491.
Merthyr Tydfil Merthyr Tydfil
A4103 Worcester Hereford
A4104 A449 in Little Malvern A44 Pershore Upton-upon-Severn to Pershore originally part of A440. The section heading north from Pershore town centre was previously part of the B4082.
A4105 The original A4105 is now the B4218 in Malvern but was originally the B4217. A later A4105 formed a short link between the A49 and A456 in Brimfield Herefordshire, having previously been upgraded from unclassified to the B4528. Classified to A road status in 1971, it was declassified a few years later when the Brimfield bypass opened.
A4106 Bridgend Porthcawl
A4107 Bwlch y Clawdd Port Talbot
A4108 First used in the mid-1920s from Cymer to Glyncorrwg when the B4185 was upgraded to Class I status. This became an extension of the A4063 in 1935 when the A4107 replaced the A4063 west of Cymer and has since been declassified.

The second A4108 ran from Gelilydan to Congl-y-wal, created around 1947 when the B4408 was upgraded to Class I status. Later became part of the A470 to create a north-south cross-country route through Wales.

A4109 Aberdulais Glynneath
A4110 Leintwardine Hereford
A4111 Near Whitney-on-Wye Kington
A4112 Tenbury Wells Eardisley
A4113 Bromfield Knighton
A4114 Allesley Willenhall Previously part of the A45 before it was re-routed to run south of Coventry.

Originally ran from Bladon Road to Oxford Road in Woodstock; this was part of the B4024 before it was upgraded in 1922 (the remainder was renumbered A4095). Became a spur of the A4095 in 1935 and was declassified by the 1950s.

A4115 Templeton Cross Hands Was B4315 until 1935.

Originally ran from Aberaeton to Lampeter; this was previously the B4340 before it was upgraded in the mid-1920s. Became part of a rerouted A482 in 1935.

A4116 This was used for the original route of the A40 in Carmarthen when the Inner Relief Road opened and the A40 was rerouted along Morfa Lane. Due to the narrowness of the old A40 route, the A4116 was later declassified.

First used between Stroud and Cirencester, designated in the mid-1920s when the B4069 was upgraded. Became part of a rerouted A419 in 1935.

A4117 Near Bewdley Ludlow Passes Titterstone Clee Hill at 381 metres above sea level.
A4118 Dyfatty Street, Swansea Port Eynon
A4119 Tonypandy Cardiff Bay Originally began at Llwynypia but following the completion of the Porth Relief road the road became part of the A4058 Treorchy to Pontypridd route.
A4120 Llanbadarn Fawr, Aberystwyth Ponterwyd It runs parallel with the A44, but on the other side of the Rheidol Valley.
A4121 This was used for a short road in Wednesbury which ran along High Bullen from the A461 High Street to the A462 Upper High Street. It was classified in 1926 and was declassified some time later, possibly when the A461 was rerouted although this is uncertain.
A4122 Cut the corner between the A425 and A423 south of Southam, designated in 1927. Unlike other short link roads, the A4122 did not become a spur in 1935, but kept its number. Now part of the A425 itself.
A4123 Wolverhampton Harborne (Birmingham) The road continued from the current terminus in Harborne to the A441 just north of Kings Norton along the current route of the A4040 from the 1930s to the 1960s.
A4124 Wolverhampton Brownhills Wednesfield town centre bypassed in 2000s. Former route between Wood End Road and Wednesfield High School renumbered B4484. The A4124 ran only between Wolverhampton and Bloxwich from 1928 to the 1980s but the entire route was originally numbered B4155.
A4125 Northwood Bushey Originally ran from Little Mill to Abergavenny; this was the B4245 until the late 1920s. Renumbered as a northern extension of the A4042 in 1935.
A4126 Monmore Green Coseley Called Rookery Road between A4123 and A463. Not signposted off A463.
A4127 Heston Wembley
A4128 High Wycombe Great Missenden
A4129 Princes Risborough Thame
A4130 Burchetts Green Rowstock The section of road between Milton Hill and Rowstock was formerly part of the A34.
A4131 Previously the road from the A47 at Camp Hill near Nuneaton to the original A5 in Atherstone. Now partly the B4111 and declassified.
A4132 Unused
A4133 Great Witley Droitwich Spa
A4134 Ran from the A439 in Evesham Place to the A34 in Stratford-upon-Avon; was the B4534 before it was upgraded to Class I status in the 1970s. Now the northern portion of the A4390.
A4135 Tetbury Slimbridge The road was originally numbered B4066 and ended on the A38 in Cambridge, Gloucestershire. It was upgraded to A-road status around 1930. During construction of the M5 motorway, the road was rerouted to its present terminus in Slimbridge.
A4136 Huntley, Gloucestershire Monmouth Both ends link to A40 – goes through Forest of Dean
A4137 Whitchurch Harewood, Herefordshire
A4138 Pontardulais Llanelli
A4139 Tenby Pembroke Dock
A4140 Wembley Bushey Heath Salmon Street, Fryent Way, Honeypot Lane, Marsh Lane. North of Stanmore Broadway as Stanmore Hill and The Common.
A4141 Solihull (M42 J5) A4177 at Five Ways, Warwickshire Previously part of A41; section renumbered when an extension of the M40 motorway opened. The southern end of the road lies midway between Knowle and Warwick.

Originally the southwestern portion of the Oxford Ring Road, from Botley to South Hinksey. Extended along the old A40 in the 1930s when it was moved to the Oxford northern bypass. The bypass was extended north around 1960, allowing the A34 to take over the southern extension of the A4141. The remainder later became the B4044.

A4142 Heyford Hill, Oxford Headington Part of the Oxford Ring Road
A4143 Llanfoist Abergavenny
A4144 Pear Tree, Oxford Redbridge Park and Ride
A4145 Watford Rickmansworth
A4146 Milton Keynes Hemel Hempstead Section between Leighton Buzzard and Hemel Hempstead downgraded to B440 in 2017. Only a small stretch connecting the A414 and A4251 remains as the A4146 in Hemel Hempstead. Forms much of H10 Bletcham Way, V11 Tongwell Street and a small portion of H6 Childs Way in Milton Keynes.
A4147 Hemel Hempstead St Albans
A4148 Bescot Bescot Walsall Ring Road
A4149
A4150 Wolverhampton Ring Road

Originally the northern section of the Gloucester Ring Road. Later switched to a section of leftover A40 in the center of Gloucester (the ring road was renumbered to A40); became a portion of the A417 by 1946 and is now unclassified and partially pedestrianized.

A4151 A48 at Elton, Gloucestershire A4136 at Nailbridge Through the Forest of Dean, main town on this road is Cinderford
A4152 Ran from the A40 to the A4149 in Ross-on-Wye; now declassified, possibly when all Class I roads were removed from the town center following completion of the A40 eastern bypass.
A4153 Ran from the A438 on the River Wye to the A438 just north of the Whitney Bridge; originally the B4350. Now part of a rerouted A438.
A4154 Amersham Amersham on the Hill Originally ran from Ledbury to Ridgeway Cross; north of Ledbury was the southern end of the B4214 and the section from there via Bosbury to Westfield was the B4128. Downgraded by the 1970s; the B4214 got its section back while the remainder is now the B4220.
A4155 Bourne End Reading By way of Little Marlow, Marlow, Medmenham, Henley-on-Thames, Lower Shiplake and Caversham
A4156 Aylesbury Aylesbury Part of Oxford Road, connects A413 and A418.
A4157 Aylesbury Quarrendon Aylesbury outer ring road
A4158 Oxford Iffley
A4159 Bow Street, Aberystwyth A44 Acts as a by-pass around the northern part of Aberystwyth.
A4160 Newport Road, Cardiff Llandough Former A4055 and B4260.

Number previously reserved in 1935 for upgrading the B489 to form a Swindon-East Anglia route with the A5160 (proposed to be used instead of the A505 for the A505/A601 route for number continuity). But the tonnage was not enough (and it was never going to be) to upgrade the road to Class I, so this proposal fell through and the route remains the B489.

A4161 Ely Bridge, Cardiff Southern Way, Cardiff Runs along a part of the old A48.
A4162 A4 at Sea Mills A4018 at Westbury-on-Trym Sylvan Way and Canford Lane
A4163 Was reserved for Courtlands Drive (then the B4539) in Watford, but this change was never implemented. Route now unclassified.
A4164 Ran from the A4093 at Hendreforgan to the B4564 near Gilfach Goch. Now an extension of the B4564.
A4165 Oxford Kidlington Banbury Road
A4166 Ran from the A38 to the A456 in Birmingham. Originally numbered B4129.
A4167 Highgate Sparkbrook Connects A41 to A4540/A435.
A4168 Woodsetton Dudley Originally ran between West Bromwich and Smethwick; initially numbered as B4168 and was the A4031 briefly in the late 1970s before becoming the A4168. However the real A4168 is in Dudley, making this use a duplicate. In 2004 the route was correctly renumbered to A4252, although some signs on the roundabout and approaches still showed A4168 as of December 2017.
A4169 Shifnal Much Wenlock The section immediately south of Shifnal was turnpiked in 1763 as one of a number of roads from Stafford and Newport, but leaves this turning sharply westwards, along a road formerly part of the Madeley turnpikes. It ends when reaches the present A442 road, but resumes a short distance further north, becoming a southern bypass for Telford. It then crosses Buildwas Bridge and runs to Much Wenlock.
A4170 Ran from Coventry City Centre to Keresley Green Road, originally part of the A423 until 1973. Downgraded to a portion of the B4098 in the late 1980s.
A4171 Cainscross Badbrook
A4172 Preston Cross Trumpet
A4173 Stroud Gloucester
A4174 Filton Bedminster Down, Bristol The Bristol or Avon Ring Road
A4175 A4 / A4174 at Hicks Gate Staple Hill In two parts: Hick's Gate to A420 at Bridgeyate via Keynsham, and A4174 at Siston to Staple Hill
A4176 A4 at Hotwells A4018 at Blackboy Hill Bridge Valley Road and Upper Belgrave Road, Bristol
A4177 Meer End Warwick Section south of Five Ways previously part of A41; section renumbered when an extension of the M40 motorway opened.
A4178 Oxhey Watford
A4179 Ran along Wembley Hill Road, Empire Way and Bridge Road in Wembley; originally part of the B4565 and A4089. The section along Bridge Road returned to the A4089 while the remainder became the A479 (possibly a typo) when the new Wembley Stadium opened in 2007.
A4180 Yeading Northwood Starts at the White Hart Roundabout in Yeading at a junction with the A312. The section between this roundabout and the Polish War Memorial used to be the B455 but was "double-upgraded" to primary route status when the A312 Parkway bypass was built during the mid-1990s. Then becomes West End Road, High Street (Ruislip), Bury Street and Ducks Hill Road heading north towards the A404 Rickmansworth Road.
A4181 Not shown on maps; only appears in the 2005 DfT Road List as running along Roebuck Lane in West Bromwich, formerly B4168. If the number was used, it was probably for a short time in the late 1960s as the route was split by the M5 in the early 1970s. The nearby A4252 now serves A4181's function.
A4182 West Bromwich West Bromwich
A4183 Abingdon Lodge Hill Oxford Road, Abingdon. This road was formerly part of the A34. The remaining part of the road between Lodge Hill and Hinksey Hill near Oxford has since been unclassified.
A4184 Evesham Evesham
A4185 Rowstock Chilton This road was formerly part of the A34.
A4186 - A4188 Unused
A4189 Redditch Warwick
A4190 - A4192 Unused
A4193 A465 in Hereford A438 in Hereford Commercial Road; unsigned.
A4194 Reserved Reserved for the Hereford Southern Link Road from the A49/B4399 junction to the A465/B4349 junction. Modern maps erroneously show the number applying to the City Link Road, this is actually part of the A465.
A4195 Unused
A4196 West Bromwich Wednesbury Formerly part of A41.
A4197 Unused
A4198 Swindon Swindon Thamesdown Drive
A4199 Unused

Four-digit roads (42xx and higher)

[edit]
Road From To Notes
A4200 Central London
(Aldwych)
Mornington Crescent, Camden
A4201 Central London
(Piccadilly Circus)
Regent's Park
A4202 Hyde Park Corner Marble Arch Part of the London Inner Ring Road
A4203 Unused Cut the corner between the A4 and A4202 in Hamilton Place. Became a portion of the A4202 by the 1940s; route is now unclassified due to dualling and realignment of Park Lane in the 1960s.
A4204 Kensington Notting Hill Gate Kensington Church Street
A4205 Edgware Road station Bishops Bridge, Paddington
A4206 Notting Hill Gate Paddington Basin
A4207 Westbourne Grove Westbourne Park
A4208 Ludgate Circus Holborn Circus St Bride Street is closed off to traffic (except pushbikes) and Stonecutter Street is exit only.
A4209 Edgware Road station Lancaster Gate
A4210 Unused
A4211 Old route of A48 after the A48(M) Port Talbot Bypass was opened in the mid-1960s. Became the A48 again when the A48(M) was renumbered to M4 in the mid-1970s.
A4212 Bala Trawsfynydd
A4213 Ran across northern Carmarthen. Upgraded from the B4207 in the late 1960s, but was downgraded to the B4312 after the Carmarthen bypass was built.
A4214 Llanelli Hendy
A4215 Libanus Defynnog
A4216 Sketty Gendros
A4217 Swansea Llansamlet
A4218 Tenby Tenby
A4219 Scleddau Manorowen
A4220 Unused
A4221 Banwen Abercraf
A4222 Cowbridge Talbot Green
A4223 A4058 in Pontypridd A470 in Pontypridd
A4224 Ran from Abercynon to Aberdare. Formerly a portion of the A4059; downgraded to a section of the B4275 around 1990.
A4225 Ran from Porth to Trehafod, was the A4058. Downgraded to a portion of the B4278, but although there is evidence the A4225 number may still exist, it may be no more than a mapping error, as the current reference to it is on Google Earth.
A4226 Bonvilston Cardiff Airport
A4227 Unused
A4228 Described as a road in Pontypridd, but this is a typo for the A4223.
A4229 Pyle Porthcawl
A4230 Llansamlet Aberdulais
A4231 Biglis Pencoedtre
A4232 M4 J30 Cardiff East M4 J33 Cardiff West Cardiff Link Road (Peripheral Distribution Road)
A4233 Tonyrefail Aberdare
A4234 Adam Street, Cardiff Queensgate Roundabout, Cardiff Central Link Road of the Peripheral Distribution Road
A4235 - A4239 Unused
A4240 Penllergaer Loughor
A4241 Port Talbot Baglan Port Talbot southern distributor road
A4242 Carmarthen Carmarthen
A4243 Carmarthen Carmarthen
A4244 Brynrefail Glasinfryn Reclassified from parts of B4366 and B4547
A4245 - A4250 Unused
A4251 Kings Langley Near Tring Largely the old route of the A41
A4252 West Bromwich Smethwick Part of the route was originally numbered B4168, A4168 and A4031. Renumbered A4252 in 2004 although as late as 2017 some signs showed A4168.
A4253 Unused
A4254 Chilvers Coton Horeston Grange Nuneaton Eastern Relief Road
A4255 Unused
A4256 Drayton Daventry Reservoir
A4257 - A4258 Unused
A4259 Swindon Wanborough
A4260 Banbury near Pear Tree, Oxford
A4261 - A4272 Unused
A4273 Listed as "Local Link in Coventry". Route is unknown.
A4274 - A4279 Unused
A4280 Bedford A428 Bedford A421 Largely the old route of the A428
A4281 A4046 in Victoria, Ebbw Vale Ebbw Vale East and Ebbw Vale West junctions One section was formerly a portion of the A465.
A4282 - A4288 Unused
A4289 Swindon Swindon
A4290 - A4299 Unused
A4300 Kettering Kettering
A4301 Gloucester Gloucester
A4302 Gloucester Gloucester
A4303 A5 near Cross in Hand M1 J20 Lutterworth southern bypass; serves Magna Park distribution centre; dualled for entire length. Former portion of the A427.
A4304 M1 J20 Market Harborough
A4305 - A4310 Unused
A4311 Swindon Swindon
A4312 Swindon Swindon
A4313 Swindon Walcot
A4314 - A4319 Unused
A4320 Arno's Vale M32 J3
A4321 - A4360 Unused
A4361 Beckhampton Swindon Renumbered from the A361 in the 1970s, with an extra digit to encourage traffic to avoid Swindon.
A4362 - A4379 Unused
A4380 A41 Park Road Oxford Street Designated in 2018, when Baker Street and Gloucester Place became two-way roads.
A4381 - A4389 Unused
A4390 A3400 Birmingham Road, Stratford-upon-Avon A422 Banbury Road, Bridge Town Former A4134 (and B4534 before that).
A4391 - A4399 Unused
A4400 Lancaster Circus, Birmingham Paradise Circus, Birmingham Formerly used for the entire Birmingham Inner Ring Road, this is the designation for the ground level road where the A38 runs through tunnels. The western section is now the A38, the eastern section now B4100 and the remainder demolished.
A4401 - A4419 Unused
A4420 Hoobrook Birchen Coppice Silverwood Way
A4421 Bicester Finmere
A4422 - A4439 Unused
A4440 Worcester Worcester
A4441 - A4443 Unused
A4444 Bilston Moxley Black Country New Road. Connects A463 and A41. Runs parallel to Walsall Canal.
A4445 - A4499 Unused
A4500 Northampton Wellingborough Formerly A45. Runs from M1 junction 16 to A509 Wellingborough ring road
A4501 Northampton Northampton
A4502 - A4507 Unused
A4508 Unused Ran from A45 south of Billing to Kingsthorpe (numbered as a link between A45 and A508). Renumbered to A5076 in the 2000s because the road was in zone 5.
A4509 Unused
A4510 M54 i54 Business Park Eastbound access to M54 or westbound access to i54 uses adjacent J2 (A449) slip roads.
A4511 - A4531 Unused
A4532 Ran from Malvern Link to Great Malvern; created in the 1960s when the A440 was decommissioned. The A4532 took over the westernmost section of the ex-A440 as well as the northernmost section of the B4208. Half of Pickersleigh Road returned to the B4208 (the other half is unclassified) and the remainder (the former A440) is now the B4211.
A4533 - A4534 Unused
A4535 Kidderminster Kidderminster
A4536 Fernhill Heath A38
A4537 Unused
A4538 Spetchley Martin Hussingtree Originally Evesham to Martin Hussingtree; former B4084. The route between Spetchley and Evesham became a portion of the A44 in 2004.
A4539 Appears on OS Landranger maps running from the A442 to the Priorslee Roundabout at the then-A5, A464 and B5061 via the old M54 J5. The section between the A442 and M54 may have had the A4539 number with the remainder up to the A464 as part of the A5 (this is possible because the number on the map is as long as the section mentioned), but no further maps showing the number have been found.
A4540 Birmingham Ring Road The Middleway. The name stems from the road originally being designated as the Middle Ring Road. It is now the only one of Birmingham's Ring Road to be completely dual carriageway.
A4541 Ran from Meole Brace to The Column, forming the start of the Shrewsbury eastern bypass. Renumbered to the A5112 except for a small section at the northern end that is now part of the A458. Whether or not the road was out-of-zone is debatable: while the road was on the wrong side of the A5 Shrewsbury bypass, it was on the correct side of the original A5.
A4542 - A4544 Unused
A4545 M42 J5A Clock Interchange Planned; number chosen "because of its significance linking it with the A45 Clock Interchange which is part of the network already used by motorists"
A4546 - A4599 Unused
A4600 M69 J2 Coventry Formerly part of the A46.
A4601 Cannock Cannock Former route of A460.
A4640 M54 J4 A518 Former B5060, renumbered in 2008.
A4723 Shown in a 1975 AA Touring Guide town plan for Birmingham on Harborne Lane in Selly Oak as headed for the "Ring Road (A4723)". As Harborne Lane is part of the A4040 (Birmingham Ring Road), the "A4723" is probably a typo for the A4123.
A4801 Ran from Piccadilly Circus to Charing Cross Road in London via Coventry Street (may be a typo for A4201, but could be genuine).
A4810 Newport SDR M4 J23A Classified A4810 in September 2013 when opened to the public
A4811 Glendulais Glen-Hafren Former routing of A483 and A489 though Newtown. Designated in February 2019 when the Newtown bypass opened.
A4971 Minffordd, Gwynedd Porthmadog Designated October 2011; formerly part of the A487.

References

[edit]
  1. ^ Mosalski, Ruth (4 November 2014). "The A44 between Llangurig and Aberystwyth is revealed as Wales' most dangerous road". walesonline. Retrieved 12 August 2019.