A roads in Zone 4 of the Great Britain numbering scheme






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).




Contents






  • 1 Single- and double-digit roads


  • 2 Triple-digit roads


  • 3 Four-digit roads (40xx)


  • 4 Four-digit roads (41xx)


  • 5 Four-digit roads (42xx and higher)






Single- and double-digit roads











































































Road
From
To
Notes

A4 A4 road

City of London (Holborn Circus)

Avonmouth
Originally London to Bath

A40 A40 road

City of London (near St. Paul's Cathedral)

Fishguard
The longest A road in Zone 4 at 256 miles long

A41 A41 road

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.

A42 A42 road

Kegworth

Appleby Magna
A 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.

A43 A43 road

M40 motorway Junction 10 north of Bicester

Stamford


A44 A44 road

Oxford

Aberystwyth
Officially the most dangerous road in Wales between Aberystwyth and Llangurig. Between Evesham and J6, M5, originally A4538.

A45 A45 road

Birmingham

Thrapston
Previously continued along route of current A14 to Felixstowe

A46 A46 road

Bath

Cleethorpes
Most 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.

A47 A47 road

Leicester

Lowestoft
The 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.

A48 A48 road

Highnam near Gloucester

Carmarthen
Originally began in Worcester. Worcester to Newport is now A449.

A49 A49 road

Ross-on-Wye

Bamber Bridge



Triple-digit roads



































































































































































































































































































































































































































































































































































































































Road
From
To
Notes

A400A400 road

Central London
(Trafalgar Square)

Archway
Takes the route of the Northern line, Charing Cross Branch and Barnet Branch

A401A401 road

Central London
(Piccadilly Circus)

Angel
Along Shaftesbury Avenue, Bloomsbury Way, Theobald's Road, Rosebery Avenue and the northernmost part of St John Street

A402A402 road

Central London
(Marble Arch)

Stamford Brook, Chiswick
Includes 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

A403A403 road

M48 motorway,
J1 near Aust

Avonmouth


A404A404 road

Central London
(Edgware Road station) 

Maidenhead
The London section is called Harrow Road for most of its length.

A405A405 road

Leavesden Green
Near Park Street


A406A406 road

Gunnersbury

Beckton
The North Circular Road

A407A407 road

Harlesden

Child's Hill
Through Willesden including the High Road and Cricklewood

A408A408 road

Harmondsworth

Uxbridge
The southern section in Sipson due to be demolished to make way for Heathrow Airport 3rd runway

A409A409 road

Northwick Park Hospital

Bushey
through the middle of Wealdstone and the western part of Stanmore known as Stanmore Common

A410A410 road

Pinner

Edgware
Uxbridge Road, through Stanmore Broadway, then London Road and Spur Road meeting the A41

A411A411 road

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

A412A412 road

Slough

Garston


A413A413 road

Gerrards Cross

Towcester


A414A414 road
Near Hemel Hempstead

Maldon


A415A415 road

Berinsfield

Witney


A416A416 road

Amersham

Berkhamsted


A417A417 road

Streatley

Leominster


A418A418 road

M40 motorway J8a

Ascott, Buckinghamshire


A419A419 road

Whitminster

Swindon


A420A420 road

Bristol

Oxford


A421A421 road

Croughton

Wyboston


A422A422 road

Bedford

Worcester
Concurrent with the A46 between Stratford-upon-Avon and Alcester

A423A423 road

Hinksey Hill

Coventry
Formerly 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.

A424A424 road

Burford

A44 near Bourton-on-the-Hill


A425A425 road

Daventry

Warwick


A426A426 road

Leicester

Southam


A427A427 road

Market Harborough

Oundle


A428A428 road

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.

A429A429 road

Chippenham

Coventry


A430A430 road

Quedgeley
Longford, Gloucester


A431A431 road

Bristol

Bath


A432A432 road

Bristol

Old Sodbury


A433A433 road

A46 at Dunkirk

A429 SW of Cirencester


A434 road
Defunct

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.

A435A435 road

Birmingham

Cirencester
Concurrent with the A46 between Alcester and Teddington Hands

A436A436 road

A417 near Brockworth

A44 near Salford, Oxfordshire


A437A437 road

Harlington, London

A40 Western Avenue near Ickenham
Originally Gloucester to Newport, now A48.

A438A438 road

M5 motorway Junction 9

Llanfilo


A439A439 road

Stratford-upon-Avon

A46 4 miles SW of Warwick


A440 road
Unused

Used to run from Pershore to Great Malvern. Now B4211.

A441A441 road

Birmingham

Cookhill


A442A442 road

Droitwich

Whitchurch


A443A443 road

Worcester

Newnham Bridge


A444A444 road

Coventry

Burton upon Trent


A445A445 road

Warwick

A45 at Ryton-on-Dunsmore


A446A446 road

Little Packington

Roughley


A447A447 road

Hinckley

Coalville
The original route through Hinckley was by-passed by a new road completed in the early 1990s

A448A448 road

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

A449A449 road

Newport

Stafford


A450A450 road

Torton

West Hagley


A451A451 road

Stourbridge

Great Witley


A452A452 road

Leamington Spa

Brownhills


A453A453 road

Nottingham

Birmingham


A454A454 road

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

A455A455 road
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.

A456A456 road

Birmingham

Woofferton
The section through Halesowen was renumbered when the by-pass opened in the 1960s

A457A457 road

Birmingham

Sedgley
The original route through Smethwick town centre was renumbered when a by-pass opened in about 1970

A458A458 road

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.

A459A459 road

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.

A460A460 road

Wolverhampton

Rugeley
The section through the centre of Cannock was renumbered in 1989 when the town's by-pass opened.

A461A461 road

Lichfield

Stourbridge
Concurrent with the A41 between Wednesbury & Great Bridge

A462A462 road

Wednesbury

Laney Green
The section through Darlaston town centre became unclassified when a new by-pass opened in the late 1960s

A463A463 road

Wombourne

Willenhall
The section beyond Coseley was either renumbered or became unclassified when the Black Country Route was completed between 1986 and 1995

A464A464 road

Oaken

Hollingswood


A465A465 road

Bromyard

M4 motorway, Llandarcy


A466A466 road

King's Thorn

Chepstow


A467A467 road

Duffryn, Newport

A465, Brynmawr


A468A468 road

Bassaleg, Newport

A470, Nantgarw


A469A469 road
A4161, Roath, Cardiff

A465, Rhymney


A470A470 road

Cardiff

Llandudno
Originally Cardiff to Brecon. Later extended north over A438, A4073, and A479, A44, A492, A489, A4084, A58, A487, A4108, and A496.

A471 road
Unused

Used to run from Usk to Abergavenny (now B4598).

A472A472 road

Treharris

Usk


A473A473 road

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.

A474A474 road

Briton Ferry

Ammanford


A475A475 road

Newcastle Emlyn

Lampeter


A476A476 road

Llanelli

Llandeilo


A477A477 road

St Clears

Johnston


A478A478 road

Cardigan

Tenby


UK road A479.svg

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. Some maps incorrectly indicate another A479 running through Empire Way, Wembley (North West of London) but this actually is the B4565

A480 road

A44 at Lyonshall

A438 west of Hereford


A481 road

Llanfihangel-nant-Melan

Llanelwedd


A482A482 road

Aberaeron

Llanwrda


A483A483 road

Swansea

Chester
by way of Wrexham. Becomes A5 road in the vicinity of Oswestry.

A484A484 road

Cardigan

Cadle near Swansea
by way of Newcastle Emlyn, Carmarthen and Llanelli

A485A485 road

Tanerdy

Llanfarian


A486 A486 road

New Quay

A484 near Saron


A487A487 road

Haverfordwest

Bangor


A488A488 road

Penybont

Shrewsbury


A489A489 road

Craven Arms

Machynlleth


A490 A490 road

Churchstoke

Llanfyllin


A491A491 road

Lydiate Ash

Wall Heath


A492 road
Unused

Used to run from Llangurig to Newtown (now A470 and A489).

A493A493 road

Machynlleth

Dolgellau
Via Tywyn

A494A494 road

Queensferry

Dolgellau
Extension to M56 motorway opened late 2008.

A495A495 road

Whitchurch
A458 near Llanfair Caereinion
By-passes Oswestry as part of the A479 road which in turn becomes part of the A5 road.

A496A496 road

Llanelltyd

Blaenau Ffestiniog
Via Barmouth; originally went north to Llandudno (this became part of the A470).

A497A497 road

Porthmadog

Nefyn


A498A498 road

Pen-y-Gwryd

Porthmadog


A499A499 road

A487

Abersoch



Four-digit roads (40xx)
































































































































































































































































































































































































































































































































Road
From
To
Notes

A4000A4000 road

Acton Town

Harlesden


A4001A4001 road

Hanwell
Hanwell
Still signed, but may not exist because it and the A3002 form a one way pair.

A4002A4002 road
Unused

Was the Tubbs Road / Nightingale Road one-way system in Harlesden.

A4003A4003 road

Brondesbury

Willesden
Willesden Lane

A4004A4004 road
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).

A4005A4005 road

West London
(Hanger Lane Gyratory)

Roxeth


A4006A4006 road

Harrow

West Hendon
Also known as Kenton Road and Kingsbury Road

A4007A4007 road

Iver Heath

Uxbridge


A4008A4008 road

Hatch End

Watford


A4010A4010 road

High Wycombe

Aylesbury

A4011
Unused

Ran from Wendover to Aston Clinton (now B4009).

A4012A4012 road

Husborne Crawley

A4146


A4013A4013 road

Kingsditch

Benhall

A4015A4015 road

Cheltenham
Cheltenham


A4017A4017 road

Kingswood

A4174 at Bromley Heath
Soundwell Road

A4018A4018 road

Bristol

Cribbs Causeway


A4019A4019 road

Coombe Hill

Cheltenham


A4020A4020 road

Shepherds 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.

A4023A4023 road

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.

A4025A4025 road

Stourport-on-Severn    

A449


A4026A4026 road

Sutton Coldfield

Little Aston


A4029A4029 road

Edgbaston
Edgbaston
Pebble Mill Road, dual carriageway, formerly home to the BBC Pebble Mill Studios.

A4030A4030 road

Bearwood

Smethwick


A4031A4031 road

Smethwick

Walsall


A4032A4032 road

Bristol
Bristol
Continuation of M32 motorway to A4044 inner ring road

A4033A4033 road

Dudley

Oldbury


A4034A4034 road

Quinton

West Bromwich


A4035 road
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.

A4036A4036 road

Dudley

Pedmore


A4037A4037 road

Wednesbury

Dudley


A4038A4038 road

Walsall

Moxley


A4039A4039 road

Bilston

Penn, West Midlands


A4040A4040 road



Birmingham Outer ring road

A4041A4041 road

West Bromwich

Streetly


A4042A4042 road

Abergavenny

A48, Newport


A4043A4043 road

Blaenavon B4246

Pontypool, A472


A4044A4044 road

Redcliffe, Bristol
St James Barton, Bristol
Inner ring road: Redcliffe Way, Temple Way, Bond Street

A4046A4046 road

A465, Rassau

A467, Aberbeeg


A4047A4047 road

A4048, Tredegar

A465, Brynmawr


A4048A4048 road

A467, Crosskeys

A465, Tredegar


A4049A4049 road

A4048, Pontllanfraith

A469, New Tredegar


A4050A4050 road

A4232, Culverhouse Cross, Cardiff

A4055, Barry


A4051A4051 road

Newport
North Cwmbran


A4053A4053 road



Coventry Ring Road

A4054A4054 road

A4119, Llandaff, Cardiff

A470, Cefn-Coed-y-Cymmer


A4055A4055 road

A4232, Cardiff Bay, Cardiff

Barry Island, Barry


A4058A4058 road

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.

A4059A4059 road

A470, Abercynon

A470, Between Brecon and Cefn-Coed-y-Cymmer


A4060A4060 road

A470, Pentrebach

A465, Dowlais Top


A4061A4061 road

Bridgend

Hirwaun


A4063A4063 road

Bridgend

Cymmer


A4064A4064 road

Sarn

Blaengarw


A4065A4065 road

Tondu

Brynmenyn


A4066A4066 road

St Clears

Pendine
Via Llanmiloe and Laugharne

A4067A4067 road

West Cross, Swansea

Sennybridge


A4068A4068 road

Gurnos

Brynamman


A4069A4069 road

Llandovery

Gwaun-Cae-Gurwen

A4070
Unused

Ran from Fforestfach to Loughor (now B4620).

A4071A4071 road

Dunsmore Heath

Rugby

A4073
Unused

Ran from A438 to A479 in Llyswen (now A470).

A4074A4074 road

Iffley

Caversham
Links Reading with Oxford

A4075A4075 road

Canaston Bridge

Pembroke


A4076A4076 road

Haverfordwest

Milford Haven


A4077A4077 road

Crickhowell

Gilwern & Govilon


A4078A4078 road

Talgarth

Three Cocks


A4079A4079 road

Three Cocks

Llyswen


A4080A4080 road

Menai Bridge

A55


A4081A4081 road

Llandrindod Wells

Newbridge-on-Wye


A4082A4082 road

Whitley, Coventry

Binley, Coventry
Allard Way
A4084
Unused

Ran from A489 near Cemmaes to Mallwyd (now A470).

A4085A4085 road

Minffordd

Caernarfon


A4086A4086 road

Capel Curig

Caernarfon


A4087A4087 road

Bangor
Bangor


A4088A4088 road

Willesden

Sudbury, London


A4089A4089 road

Alperton

Wembley Park


A4090A4090 road

Wembley

North Harrow


A4091A4091 road

Tamworth

Wishaw


A4092A4092 road

Tonyrefail

Llangeinor


A4093A4093 road

Rhondda

Llangeinor


A4094A4094 road

Loudwater

Maidenhead


A4095A4095 road

Faringdon

Bicester

Bladon Air Accident occurred near the A4095.

A4097A4097 road

Minworth

Kingsbury


A4098A4098 road

Moxley

Wednesbury


A4099A4099 road

Halesowen

Blackheath



Four-digit roads (41xx)




































































































































































































































































































































































































































































Road
From
To
Notes

A4100A4100 road

Blackheath

Brierley Hill


A4101A4101 road

Kingswinford

Dudley


A4102A4102 road

Amblecote

Duplicate number

A4102A4102 road

Merthyr Tydfil
Merthyr Tydfil

A4103A4103 road

Worcester

Hereford


A4104A4104 road

Little Malvern

Pershore


A4106A4106 road

Bridgend

Porthcawl


A4107A4107 road

Bwlch y Clawdd

Port Talbot

A4108
Unused

Ran from Gelilydan to Llanfestinog (now A470).

A4109A4109 road

Aberdulais

Glynneath


A4110A4110 road

Leintwardine

Hereford


A4111A4111 road

Willersley

Kington


A4112A4112 road

Tenbury Wells

Eardisley


A4113A4113 road

Bromfield

Knighton


A4114A4114 road

Allesley

Willenhall


A4115A4115 road

Templeton

Cross Hands


A4117A4117 road
Near Bewdley

Ludlow

Passes Titterstone Clee Hill at 381 metres above sea level.

A4118A4118 road
Dyfatty Street, Swansea

Port Eynon


A4119A4119 road

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.

A4120A4120 road

Llanbadarn Fawr, Aberystwyth

Ponterwyd
It runs parallel with the A44, but on the other side of the Rheidol Valley.

A4123A4123 road

Wolverhampton

Harborne (Birmingham)


A4124A4124 road

Wolverhampton

Brownhills


A4125A4125 road

Northwood

Bushey


A4126A4126 road

Monmore Green

Coseley


A4127A4127 road

Heston

Wembley


A4128A4128 road

High Wycombe

Great Missenden


A4129A4129 road

Princes Risborough

Thame


A4130A4130 road

Burchetts Green

Rowstock
The section of road between Milton Hill and Rowstock was formerly part of the A34.

A4133A4133 road

Great Witley

Droitwich Spa


A4135A4135 road

Tetbury

Slimbridge


A4136A4136 road

Huntley, Gloucestershire

Monmouth
Both ends link to A40 - goes through Forest of Dean

A4137A4137 road

Marston

St Owen's Cross


A4138 A4138 road

Pontardulais

Llanelli


A4139A4139 road

Tenby

Pembroke Dock


A4140A4140 road

Wembley

Bushey Heath
Salmon Street, Fryent Way, Honeypot Lane, Marsh Lane. North of Stanmore Broadway as Stanmore Hill and The Common.

A4141A4141 road

Solihull

Five Ways


A4142A4142 road
Heyford Hill, Oxford

Headington
Part of the Oxford Ring Road

A4143A4143 road

Llanfoist

Abergavenny


A4144A4144 road
Pear Tree, Oxford
Redbridge Park and Ride


A4145A4145 road

Watford

Rickmansworth


A4146 A4146 road

Milton Keynes

Hemel Hempstead


A4147A4147 road

Hemel Hempstead

St Albans


A4148A4148 road

Bescot
Bescot

Walsall Ring Road

A4150A4150 road



Wolverhampton Ring Road

A4151A4151 road

A49 at Elton, Gloucestershire

A4136 at Nailbridge
Through the Forest of Dean, main town on this road is Cinderford

A4154A4154 road

Amersham

Amersham on the Hill


A4155A4155 road

Bourne End

Reading
By way of Little Marlow, Marlow, Medmenham, Henley-on-Thames, Lower Shiplake and Caversham

A4156 A4156 road

Aylesbury
Aylesbury
Part of Oxford Road, connects A413 and A418.

A4157A4157 road

Aylesbury

Quarrendon
Aylesbury outer ring road

A4158A4158 road

Oxford

Iffley


A4159A4159 road
Bow Street, Aberystwyth

A44
Acts as a by-pass around the northern part of Aberystwyth.

A4160A4160 road
Newport Road, Cardiff

Llandough


A4161A4161 road
Ely Bridge, Cardiff
Southern Way, Cardiff
Runs along a part of the old A48

A4162A4162 road

A4 at Sea Mills

A4018 at Westbury-on-Trym
Sylvan Way and Canford Lane

A4165A4165 road

Oxford

Kidlington

Banbury Road

A4167A4167 road

Birmingham

A456


A4168A4168 road

Woodsetton

Dudley
Previously also used on what is now the A4252.

A4169A4169 road

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
Unused

Ran from Coventry City Centre to Keresley Green Road (now B4098).

A4171A4171 road

Cainscross

Badbrook


A4172A4172 road

Preston Cross

Trumpet


A4173A4173 road

Stroud

Gloucester


A4174A4174 road

Filton

Bedminster Down, Bristol
The Bristol Ring Road

A4175A4175 road

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

A4176A4176 road

A4 at Hotwells

A4018 at Blackboy Hill
Bridge Valley Road and Upper Belgrave Road, Bristol

A4177A4177 road

Meer End

Warwick


A4178A4178 road

Oxhey

Watford


A4180A4180 road

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.

A4182A4182 road

West Bromwich
West Bromwich


A4183A4183 road

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.

A4184A4184 road

Evesham
Evesham


A4185A4185 road

Rowstock

Chilton
This road was formerly part of the A34.

A4189A4189 road

Redditch

Warwick


A4196A4196 road

West Bromwich

Wednesbury



Four-digit roads (42xx and higher)

































































































































































































































































































































































































































Road
From
To
Notes

A4200A4200 road

Central London
(Aldwych)

Mornington Crescent, Camden
Kingsway, Southampton Row, Woburn Place and Eversholt Street, runs through Russell Square and Tavistock Square

A4201A4201 road

Central London
(Piccadilly Circus)

Regent's Park
Regent Street, Langham Place and Portland Place, then north of the Marylebone Road as Albany Street

A4202A4202 road

Hyde Park Corner

Marble Arch
Park Lane, part of the London Inner Ring Road

A4204A4204 road

Kensington

Notting Hill Gate
Kensington Church Street

A4205A4205 road

Edgware Road station

Bishops Bridge, Paddington


A4206A4206 road

Notting Hill Gate

Paddington Basin
Pembridge Road, Pembridge Villas, Westbourne Grove, Bishop's Bridge Road

A4207A4207 road

Westbourne Grove
Westbourne Park
Chepstow Road, Great Western Road

A4208A4208 road

Ludgate Circus

Holborn Circus
St Bride Street is closed off to traffic (except pushbikes) and Stonecutter Street is exit only.

A4209A4209 road

Edgware Road station

Lancaster Gate
Sussex Gardens

A4212A4212 road

Bala

Trawsfynydd


A4213 A4213 road

Carmarthen



A4214A4214 road

Llanelli

Hendy


A4215A4215 road

Libanus

Defynnog


A4216A4216 road

Sketty

Gendros


A4217A4217 road

Swansea

Llansamlet


A4218A4218 road

Tenby
Tenby


A4219A4219 road

Scleddau

Manorowen


A4221A4221 road

Banwen

Abercraf


A4222A4222 road

Cowbridge

Talbot Green


A4223 road
A4058 in Pontypridd
A470 in Pontypridd


A4224A4224 road


Ran from Abercynon to Aberdare (now B4275).
A4225
Unused

Ran from Porth to Trehafod (now B4278).

A4226A4226 road

Bonvilston

Cardiff Airport


A4229A4229 road

Pyle

Porthcawl


A4230A4230 road

Llansamlet

Aberdulais


A4231A4231 road

Biglis

Pencoedtre


A4232A4232 road

M4 Junction 30 Cardiff East
M4 Junction 33 Cardiff West
Cardiff Link Road (Peripheral Distribution Road)

A4233A4233 road

Tonyrefail

Aberdare


A4234A4234 road
Adam Street, Cardiff
Queensgate Roundabout, Cardiff
Central Link Road of the Peripheral Distribution Road

A4240A4240 road

Penllergaer

Loughor


A4241A4241 road

Port Talbot

Baglan
Port Talbot southern distributor road

A4242A4242 road

Carmarthen
Carmarthen


A4243A4243 road

Carmarthen
Carmarthen


A4244A4244 road

Brynrefail

Glasinfryn
Reclassified from parts of B4366 and B4547

A4251A4251 road

Kings Langley
Near Tring


A4252A4252 road

West Bromwich

Smethwick


A4254A4254 road

Chilvers Coton

Horeston Grange
Nuneaton Eastern Relief Road

A4256A4256 road

Drayton

Daventry Reservoir


A4259A4259 road

Swindon

Wanborough


A4260A4260 road

Banbury
near Pear Tree, Oxford


A4289A4289 road

Swindon
Swindon


A4300A4300 road

Kettering
Kettering


A4301 road

Gloucester
Gloucester


A4302A4302 road

Gloucester
Gloucester


A4303A4303 road
Cross in Hand, A5
Junction 20 of M1

Lutterworth southern by-pass; serves Magna Park distribution centre; dualled for entire length

A4304A4304 road
Junction 20 of M1

Market Harborough


A4311A4311 road

Swindon
Swindon


A4312A4312 road

Swindon
Swindon


A4313A4313 road

Swindon

Walcot


A4320A4320 road

Arno's Vale

M32 Junction 3


A4361A4361 road

Beckhampton

Swindon
Part of the A361
A4400
Unused

Formerly used for the Birmingham Inner Ring Road.

A4421A4421 road

Bicester

Finmere


A4440A4440 road

Worcester
Worcester


A4444A4444 road

Bilston

Moxley


A4500A4500 road

Northampton

Wellingborough
Formerly A45. Runs from M1 junction 16 to A509 Wellingborough ring road

A4501A4501 road

Northampton
Northampton

A4508


Ran 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.
A4532


Ran from Malvern Link to Great Malvern (now B4208, Pickersleigh Road, and B4211).

A4535A4535 road

Kidderminster
Kidderminster


A4536A4536 road

Fernhill Heath

A38


A4538A4538 road

Spetchley

Martin Hussingtree
Originally Evesham to Martin Husingtree

A4540A4540 road


Birmingham Middle Ring Road

A4600A4600 road

M69 Junction 2

Coventry
formerly part of the A46

A4601A4601 road

Cannock
Cannock

A4801 road
Unused

Ran from Piccadilly Circus to Charing Cross Road in London via Coventry Street (may be a typo for A4201).
A4810 road

Newport SDR

M4 Junction 23A
Classified A4810 on September 2013 when opened to the public
A4971 road

Minffordd, Gwynedd

Porthmadog
Designated October 2011; formerly part of the A487












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