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A roads in Zone 4 of the Great Britain numbering scheme

A roads in Zone 4 of the Great Britain numbering scheme

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

A4City of London (Holborn Circus)AvonmouthOriginally London to Bath
A40City of London (near St. Paul's Cathedral)FishguardThe longest A road in Zone 4 at 256 miles long
A41Central London (near Marble Arch)BirkenheadA 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.
A42KegworthAppleby MagnaA continuation of the M42, hence the use of A42 despite being entirely in Zone 5. Early road atlases show the A42 running along the present A4074 and A34 from Reading to Birmingham.
A43M40 motorway Junction 10 north of BicesterStamford
A44OxfordAberystwythOfficially the most dangerous road in Wales between Aberystwyth and Llangurig.[1] Between Evesham and J6, M5, originally A4538.
A45BirminghamThrapstonPreviously continued along route of current A14 to Felixstowe
A46BathCleethorpesMost of the section betweens Evesham and Leicester replaced by new-build sections, as well as the M69 motorway between Coventry and Leicester. 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 Toddington also became part of the A46, and the current section of the A46 round Stratford was new build.
A47LeicesterLowestoftThe section between Birmingham and Nuneaton has 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.
A48Highnam near GloucesterCarmarthenOriginally began in Worcester. Worcester to Newport is now A449.
A49Ross-on-WyeBamber Bridge

Triple-digit roads

A400Central London
(Trafalgar Square)
ArchwayTakes the route of the Northern line, Charing Cross Branch and Barnet Branch
A401Central London
(Piccadilly Circus)
AngelAlong Shaftesbury Avenue, Bloomsbury Way, Theobald's Road, Rosebery Avenue and the northernmost part of St John Street
A402Central London
(Marble Arch)
Stamford Brook, ChiswickIncludes sections of the original A40 along Bayswater Road, Notting Hill Gate and Holland Park Avenue, the E/W carriageways of Shepherd's Bush Green and Goldhawk Road
A403M48 motorway,
J1 near Aust
A404Central London
(Edgware Road station) 
MaidenheadThe London section is called Harrow Road for most of its length.
A405Leavesden GreenNear Park Street
A406GunnersburyBecktonThe North Circular Road
A407HarlesdenChild's HillThrough Willesden including the High Road and Cricklewood
A408HarmondsworthUxbridgeThe southern section in Sipson due to be demolished to make way for Heathrow Airport 3rd runway
A409Northwick Park HospitalBusheythrough the middle of Wealdstone and the western part of Stanmore known as Stanmore Common
A410PinnerEdgwareUxbridge Road, through Stanmore Broadway, then London Road and Spur Road meeting the A41
A411WatfordBarnetMeets 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
A413Gerrards CrossTowcester
A414Near Hemel HempsteadMaldon
A418M40 motorwayJ8aAscott, Buckinghamshire
A422BedfordWorcesterConcurrent with the A46 between Stratford-upon-Avon and Alcester
A423Hinksey HillCoventryFormerly ran from Maidenhead to Coventry via Oxford and Banbury, and a small section of this remains as part of the Oxford Ring Road. Now begins its former route at Banbury.
A424BurfordA44 near Bourton-on-the-Hill
A427Market HarboroughOundle
A428CoventryCambridgeThis road is now split in two parts between Great Barford and Eaton Socon due to the extension of the A421 to the A1.
A430QuedgeleyLongford, Gloucester
A432BristolOld Sodbury
A433A46 at DunkirkA429 SW of Cirencester
A434DefunctUsed 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.
A435BirminghamCirencesterConcurrent with the A46 between Alcester and Teddington Hands
A436A417 near BrockworthA44 near Salford, Oxfordshire
A437Harlington, LondonA40 Western Avenue near IckenhamOriginally Gloucester to Newport, now A48.
A438M5 motorwayJunction 9Llanfilo
A439Stratford-upon-AvonA46 4 miles SW of Warwick
A440UnusedUsed to run from Pershore to Great Malvern. Now B4211.
A443WorcesterNewnham Bridge
A444CoventryBurton upon Trent
A445WarwickA45 at Ryton-on-Dunsmore
A446Little PackingtonRoughley
A447HinckleyCoalvilleThe original route through Hinckley was by-passed by a new road completed in the early 1990s
A448KidderminsterStudley, WarwickshireThe original route between Bromsgrove and Redditch was by-passed by a dual carriageway in the 1970s after Redditch was developed into a new town
A450TortonWest Hagley
A451StourbridgeGreat Witley
A452Leamington SpaBrownhills
A454BridgnorthFour OaksThe 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
A455UnusedUsed 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.
A456BirminghamWooffertonThe section through Halesowen was renumbered when the by-pass opened in the 1960s
A457BirminghamSedgleyThe original route through Smethwick town centre was renumbered when a by-pass opened in about 1970
A458MallwydQuintonOriginally 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.
A459HalesowenWolverhamptonRenumbering 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.
A460WolverhamptonRugeleyThe section through the centre of Cannock was renumbered in 1989 when the town's by-pass opened.
A461LichfieldStourbridgeConcurrent with the A41 between Wednesbury & Great Bridge
A462WednesburyLaney GreenThe section through Darlaston town centre became unclassified when a new by-pass opened in the late 1960s
A463WombourneWillenhallThe section beyond Coseley was either renumbered or became unclassified when the Black Country Route was completed between 1986 and 1995
A465BromyardM4 motorway, Llandarcy
A466King's ThornChepstow
A467Duffryn, NewportA465, Brynmawr
A468Bassaleg, NewportA470, Nantgarw
A469A4161, Roath, CardiffA465, Rhymney
A470CardiffLlandudnoOriginally Cardiff to Brecon. Later extended north over A438, A4073, and A479, A44, A492, A489, A4084, A58, A487, A4108, and A496.
A471UnusedUsed to run from Usk to Abergavenny (now B4598).
A473PontypriddBridgendOriginally 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.
A474Briton FerryAmmanford
A475Newcastle EmlynLampeter
A477St ClearsJohnston
A479GlanuskLlyswenRuns through the heart of the Brecon Beacons in Wales. Originally went northwest to Rhayader, but this section became part of the A470. Some maps incorrectly indicate another A479 running through Empire Way, Wembley (North West of London) but this actually is the B4565
A480A44 at LyonshallA438 west of Hereford
A483SwanseaChesterby way of Wrexham. Becomes A5 road in the vicinity of Oswestry.
A484CardiganCadle near Swanseaby way of Newcastle Emlyn, Carmarthen and Llanelli
A486New QuayA484 near Saron
A489Craven ArmsMachynlleth
A491Lydiate AshWall Heath
A492UnusedUsed to run from Llangurig to Newtown (now A470 and A489).
A493MachynllethDolgellauVia Tywyn
A494QueensferryDolgellauExtension to M56 motorway opened late 2008.
A495WhitchurchA458 near Llanfair CaereinionBy-passes Oswestry as part of the A479 road which in turn becomes part of the A5 road.
A496LlanelltydBlaenau FfestiniogVia Barmouth; originally went north to Llandudno (this became part of the A470).

Four-digit roads (40xx)

A4000Acton TownHarlesden
A4001HanwellHanwellStill signed, but may not exist because it and the A3002 form a one way pair.
A4002UnusedWas the Tubbs Road / Nightingale Road one-way system in Harlesden.
A4003BrondesburyWillesdenWillesden Lane
A4004UnusedWas 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).
A4005West London
(Hanger Lane Gyratory)
A4006HarrowWest HendonAlso known as Kenton Road and Kingsbury Road
A4007Iver HeathUxbridge
A4008Hatch EndWatford
A4010High WycombeAylesbury
A4011UnusedRan from Wendover to Aston Clinton (now B4009).
A4017KingswoodA4174 at Bromley HeathSoundwell Road
A4018BristolCribbs Causeway
A4019Coombe HillCheltenham
A4020Shepherds BushDenhamKnown as the Uxbridge Road for most of its length (with short stretches known by other names). Follows the former route of the A40.
A4023RedditchMatchboroughUsed to run from Redditch to Coventry but nearly all the section has been downgraded to the B4101 upon completion of the M42 in 1986.
A4026Sutton ColdfieldLittle Aston
A4029EdgbastonEdgbastonPebble Mill Road, dual carriageway, formerly home to the BBC Pebble Mill Studios.
A4032BristolBristolContinuation of M32 motorway to A4044 inner ring road
A4034QuintonWest Bromwich
A4035UnusedUsed 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.
A4039BilstonPenn, West Midlands
A4040Birmingham Outer ring road
A4041West BromwichStreetly
A4042AbergavennyA48, Newport
A4043Blaenavon B4246Pontypool, A472
A4044Redcliffe, BristolSt James Barton, BristolInner ring road: Redcliffe Way, Temple Way, Bond Street
A4046A465, RassauA467, Aberbeeg
A4047A4048, TredegarA465, Brynmawr
A4048A467, CrosskeysA465, Tredegar
A4049A4048, PontllanfraithA469, New Tredegar
A4050A4232, Culverhouse Cross,CardiffA4055, Barry
A4051NewportNorth Cwmbran
A4053Coventry Ring Road
A4054A4119, Llandaff,CardiffA470, Cefn-Coed-y-Cymmer
A4055A4232, Cardiff Bay,CardiffBarry Island, Barry
A4058A470, PontypriddA4061, TreorchyOriginally 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.
A4059A470, AbercynonA470, Between Brecon and Cefn-Coed-y-Cymmer
A4060A470, PentrebachA465, Dowlais Top
A4066St ClearsPendineVia Llanmiloe and Laugharne
A4067West Cross, SwanseaSennybridge
A4070UnusedRan from Fforestfach to Loughor (now B4620).
A4071Dunsmore HeathRugby
A4073UnusedRan from A438 to A479 in Llyswen (now A470).
A4074IffleyCavershamLinks Reading with Oxford
A4075Canaston BridgePembroke
A4076HaverfordwestMilford Haven
A4077CrickhowellGilwern & Govilon
A4078TalgarthThree Cocks
A4079Three CocksLlyswen
A4080Menai BridgeA55
A4081Llandrindod WellsNewbridge-on-Wye
A4082Whitley, CoventryBinley, CoventryAllard Way
A4084UnusedRan from A489 near Cemmaes to Mallwyd (now A470).
A4086Capel CurigCaernarfon
A4088WillesdenSudbury, London
A4089AlpertonWembley Park
A4090WembleyNorth Harrow
A4095FaringdonBicesterBladon Air Accident occurred near the A4095.

Four-digit roads (41xx)

A4100BlackheathBrierley Hill
A4102AmblecoteDuplicate number
A4102Merthyr TydfilMerthyr Tydfil
A4104Little MalvernPershore
A4107Bwlch y ClawddPort Talbot
A4108UnusedRan from Gelilydan to Llanfestinog (now A470).
A4112Tenbury WellsEardisley
A4114AllesleyWillenhallPreviously part of the A45 before it was re-routed to run south of Coventry
A4115TempletonCross Hands
A4117Near BewdleyLudlowPasses Titterstone Clee Hill at 381 metres above sea level.
A4118Dyfatty Street, SwanseaPort Eynon
A4119TonypandyCardiff BayOriginally began at Llwynypia but following the completion of the Porth Relief road the road became part of the A4058 Treorchy to Pontypridd route.
A4120Llanbadarn Fawr, AberystwythPonterwydIt runs parallel with the A44, but on the other side of the Rheidol Valley.
A4123WolverhamptonHarborne (Birmingham)
A4126Monmore GreenCoseley
A4128High WycombeGreat Missenden
A4129Princes RisboroughThame
A4130Burchetts GreenRowstockThe section of road between Milton Hill and Rowstock was formerly part of the A34.
A4133Great WitleyDroitwich Spa
A4136Huntley, GloucestershireMonmouthBoth ends link to A40 - goes through Forest of Dean
A4137MarstonSt Owen's Cross
A4139TenbyPembroke Dock
A4140WembleyBushey HeathSalmon Street, Fryent Way, Honeypot Lane, Marsh Lane. North of Stanmore Broadway as Stanmore Hill and The Common.
A4141SolihullFive WaysPreviously part of A41; section renumbered when an extension of the M40 motorway opened
A4142Heyford Hill, OxfordHeadingtonPart of the Oxford Ring Road
A4144Pear Tree, OxfordRedbridge Park and Ride
A4146Milton KeynesHemel Hempstead
A4147Hemel HempsteadSt Albans
A4148BescotBescotWalsall Ring Road
A4150Wolverhampton Ring Road
A4151A49 at Elton, GloucestershireA4136 at NailbridgeThrough the Forest of Dean, main town on this road is Cinderford
A4154AmershamAmersham on the Hill
A4155Bourne EndReadingBy way of Little Marlow, Marlow, Medmenham, Henley-on-Thames, Lower Shiplake and Caversham
A4156AylesburyAylesburyPart of Oxford Road, connects A413 and A418.
A4157AylesburyQuarrendonAylesbury outer ring road
A4159Bow Street, AberystwythA44Acts as a by-pass around the northern part of Aberystwyth.
A4160Newport Road, CardiffLlandough
A4161Ely Bridge, CardiffSouthern Way, CardiffRuns along a part of the old A48
A4162A4 at Sea MillsA4018 at Westbury-on-TrymSylvan Way and Canford Lane
A4165OxfordKidlingtonBanbury Road
A4168WoodsettonDudleyPreviously also used on what is now the A4252.
A4169ShifnalMuch WenlockThe 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.
A4170UnusedRan from Coventry City Centre to Keresley Green Road (now B4098).
A4172Preston CrossTrumpet
A4174FiltonBedminster Down, BristolThe Bristol Ring Road
A4175A4 / A4174 at Hicks GateStaple HillIn two parts: Hick's Gate to A420 at Bridgeyate via Keynsham, and A4174 at Siston to Staple Hill
A4176A4 at HotwellsA4018 at Blackboy HillBridge Valley Road and Upper Belgrave Road, Bristol
A4177Meer EndWarwickPreviously part of A41; section renumbered when an extension of the M40 motorway opened
A4180YeadingNorthwoodStarts 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.
A4182West BromwichWest Bromwich
A4183AbingdonLodge HillOxford 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.
A4185RowstockChiltonThis road was formerly part of the A34.
A4196West BromwichWednesbury

Four-digit roads (42xx and higher)

A4200Central London
Mornington Crescent, CamdenKingsway, Southampton Row, Woburn Place and Eversholt Street, runs through Russell Square and Tavistock Square
A4201Central London
(Piccadilly Circus)
Regent's ParkRegent Street, Langham Place and Portland Place, then north of the Marylebone Road as Albany Street
A4202Hyde Park CornerMarble ArchPark Lane, part of the London Inner Ring Road
A4204KensingtonNotting Hill GateKensington Church Street
A4205Edgware Road stationBishops Bridge, Paddington
A4206Notting Hill GatePaddington BasinPembridge Road, Pembridge Villas, Westbourne Grove, Bishop's Bridge Road
A4207Westbourne GroveWestbourne ParkChepstow Road, Great Western Road
A4208Ludgate CircusHolborn CircusSt Bride Street is closed off to traffic (except pushbikes) and Stonecutter Street is exit only.
A4209Edgware Road stationLancaster GateSussex Gardens
A4222CowbridgeTalbot Green
A4223A4058 in PontypriddA470 in Pontypridd
A4224Ran from Abercynon to Aberdare (now B4275).
A4225UnusedRan from Porth to Trehafod (now B4278).
A4226BonvilstonCardiff Airport
A4232M4 Junction 30 Cardiff EastM4 Junction 33 Cardiff WestCardiff Link Road (Peripheral Distribution Road)
A4234Adam Street, CardiffQueensgate Roundabout, CardiffCentral Link Road of the Peripheral Distribution Road
A4241Port TalbotBaglanPort Talbot southern distributor road
A4244BrynrefailGlasinfrynReclassified from parts of B4366 and B4547
A4251Kings LangleyNear Tring
A4252West BromwichSmethwick
A4254Chilvers CotonHoreston GrangeNuneaton Eastern Relief Road
A4256DraytonDaventry Reservoir
A4260Banburynear Pear Tree, Oxford
A4303Cross in Hand, A5Junction 20 of M1Lutterworth southern by-pass; serves Magna Park distribution centre; dualled for entire length
A4304Junction 20 of M1Market Harborough
A4320Arno's ValeM32 Junction 3
A4361BeckhamptonSwindonPart of the A361
A4400UnusedFormerly used for the Birmingham Inner Ring Road.
A4500NorthamptonWellingboroughFormerly A45. Runs from M1 junction 16 to A509 Wellingborough ring road
A4508Ran from A45 south of Billing to Kingsthorpe (numbered as a link between A45 and A508). Renumbered as A5076 because the road is in zone 5.
A4532Ran from Malvern Link to Great Malvern (now B4208, Pickersleigh Road, and B4211).
A4536Fernhill HeathA38
A4538SpetchleyMartin HussingtreeOriginally Evesham to Martin Husingtree
A4540Central Birmingham Ring Road
A4600M69 Junction 2Coventryformerly part of the A46
A4801 roadUnusedRan from Piccadilly Circus to Charing Cross Road in London via Coventry Street (may be a typo for A4201).
A4810 roadNewport SDRM4 Junction 23AClassified A4810 on September 2013 when opened to the public
A4971 roadMinffordd, GwyneddPorthmadogDesignated October 2011; formerly part of the A487


Citation Linkwww.walesonline.co.ukMosalski, Ruth (4 November 2014). "The A44 between Llangurig and Aberystwyth is revealed as Wales' most dangerous road". walesonline. Retrieved 12 August 2019.
Sep 26, 2019, 12:19 PM
Citation Linkwww.walesonline.co.uk"The A44 between Llangurig and Aberystwyth is revealed as Wales' most dangerous road"
Sep 26, 2019, 12:19 PM
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Sep 26, 2019, 12:19 PM