A roads in Zone 4 of the Great Britain numbering scheme

A roads in Zone 4 of the Great Britain numbering scheme
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

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
A42 A42 road Appleby Magna Diseworth A continuation of the M42, hence the use of A42 despite the road being entirely within Zone 5.
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.
A45 A45 road Birmingham Near Thrapston
A46 A46 road Bath Cleethorpes
A47 A47 road Birmingham Great Yarmouth
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
A400 A400 road Central London (Trafalgar Square) Archway Takes the route of the Northern Line, Charing Cross Branch and Barnet Branch
401 Central London (Piccadilly Circus) Angel Along Shaftesbury Avenue, Bloomsbury Way, Theobald's Road, Rosebery Avenue and the northern most part of St John Street
A402 A402 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 Shepherds Bush Green and Goldhawk Road
A403 A403 road M48 motorway Junction 1 near Aust Avonmouth
A404 A404 road Central London (Edgware Road station) Maidenhead The London section is called Harrow Road for most of its length.
A405 A405 road Leavesden Green Near Park Street
A406 A406 road Gunnersbury Beckton The North Circular Road
A407 A407 road Harlesden Child's Hill Through Willesden including the High Road and Cricklewood
A408 A408 road Harmondsworth Uxbridge The southern section in Sipson due to be demolished to make way for Heathrow Airport 3rd runway
A409 A409 road Northwick Park Hospital Bushey through the middle of Wealdstone and the western part of Stanmore known as Stanmore Common
A410 A410 road Pinner Edgware Uxbridge Road, through Stanmore Broadway, then London Road and Spur Road meeting the A41
A411 A411 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
A412 A412 road Slough Garston
A413 A413 road Gerrards Cross Towcester
A414 A414 road Near Hemel Hempstead Maldon
A415 A415 road Berinsfield Witney
A416 A416 road Amersham Berkhamsted
A417 A417 road Streatley Leominster
A418 A418 road M40 motorway Junction 8a Ascott, Buckinghamshire
A419 A419 road Whitminster Swindon
A420 A420 road Bristol Oxford
A421 A421 road Croughton Wyboston
A422 A422 road Bedford Worcester Concurrent with the A46 between Stratford-upon-Avon and Alcester
A423 A423 road Hinksey Hill Coventry Small section of the road is part of the Oxford Ring Road. Reprised at Banbury.
A424 A424 road Burford A44 near Bourton-on-the-Hill
A425 A425 road Daventry Warwick
A426 A426 road Leicester Southam
A427 A427 road Market Harborough Oundle
A428 A428 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.
A429 A429 road Chippenham Coventry
A430 A430 road Quedgeley Longford, Gloucester
A431 A431 road Bristol Bath
A432 A432 road Bristol Old Sodbury
A433 A433 road A46 at Dunkirk A429 SW of Cirencester
A435 A435 road Birmingham Cirencester Concurrent with the A46 between Alcester and Teddington Hands
A436 A436 road A417 near Brockworth A44 near Salford, Oxfordshire
A437 A437 road Harlington, London A40 Western Avenue near Ickenham Originally Gloucester to Newport, now A48.
A438 A438 road M5 motorway Junction 9 Llanfilo
A439 A439 road Stratford-upon-Avon A46 4 miles SW of Warwick
A441 A441 road Birmingham Cookhill
A442 A442 road Droitwich Whitchurch
A443 A443 road Worcester Newnham Bridge
A444 A444 road Baginton Burton upon Trent The original route between Coventry and Nuneaton was by-passed by dual carriageway in three phases over approximately 20 years leading up to 1995
A445 A445 road Warwick A45 at Ryton-on-Dunsmore
A446 A446 road Little Packington Roughley
A447 A447 road Hinckley Coalville The original route through Hinckley was by-passed by a new road completed in the early 1990s
A448 A448 road Kidderminster Studley 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 A449 road Newport Stafford
A450 A450 road Torton West Hagley
A451 A451 road Stourbridge Great Witley
A452 A452 road Leamington Spa Brownhills
A453 A453 road Nottingham Birmingham
A454 A454 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
A456 A456 road Birmingham Woofferton The section through Halesowen was renumbered when the by-pass opened in the 1960s
A457 A457 road Birmingham Sedgley The original route through Smethwick town centre was renumbered when a by-pass opened in about 1970
A458 A458 road Mallwyd Quinton Originally started in Dolgellau. Further renumberings have taken place over the years, notably when the town of Bridgnorth was by-passed in 1985
A459 A459 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.
A460 A460 road Wolverhampton Rugeley The section through the centre of Cannock was renumbered in 1989 when the town's by-pass opened.
A461 A461 road Lichfield Stourbridge Concurrent with the A41 between Wednesbury & Great Bridge
A462 A462 road Wednesbury Laney Green The section through Darlaston town centre became unclassified when a new by-pass opened in the late 1960s
A463 A463 road Wombourne Willenhall The section beyond Coseley was either renumbered or became unclassified when the Black Country Route was completed between 1986 and 1995
A464 A464 road Oaken Hollinswood
A465 A465 road Bromyard M4 motorway, Llandarcy
A466 A466 road Kingsthorne Chepstow
A467 A467 road Duffryn, Newport A465, Brynmawr
A468 A468 road Bassaleg, Newport A470, Nantgarw
A469 A469 road A4161, Roath, Cardiff A465, Rhymney
A470 A470 road Cardiff Llandudno Originally Cardiff to Brecon.
A472 A472 road Treharris Usk
A473 A473 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.
A474 A474 road Briton Ferry Ammanford
A475 A475 road Newcastle Emlyn Lampeter
A476 A476 road Llanelli Llandeilo
A477 A477 road St Clears Johnston
A478 A478 road Cardigan Tenby
50px A479 road Glanusk Llyswen Runs through the heart of the Brecon Beacons in Wales. Some maps incorrectly indicate another A479 running through Empire Way, Wembley (North West of London) but this actually is the B4565
50px A480 road A44 at Lyonshall A438 west of Hereford
A482 A482 road Aberaeron Llanwrda
A483 A483 road Swansea Chester
A484 A484 road Cardigan Cadle near Swansea by way of Newcastle Emlyn, Carmarthen and Llanelli
A485 A485 road Tanerdy Llanfarian
A486 A486 road New Quay A484 near Saron
A487 A487 road Haverfordwest Bangor
A488 A488 road Penybont Shrewsbury
A489 A489 road Craven Arms Machynlleth
A490 A490 road Churchstoke Llanfyllin
A491 A491 road Lydiate Ash Wall Heath
A493 A493 road Machynlleth Dolgellau Via Tywyn
A494 A494 road Queensferry Dolgellau Extension to M56 motorway opened late 2008.
A495 A495 road Whitchurch The A458 near Llanfair Caereinion By-passes Oswestry as part of the A483
A496 A496 road Llanelltyd Blaenau Ffestiniog Via Barmouth
A497 A497 road Porthmadog Nefyn
A498 A498 road Pen-y-Gwryd Porthmadog
A499 A499 road A487 Abersoch

Four-digit roads (40xx)

Road From To Notes
A4000 A4000 road Acton Town Harlesden
A4001 A4001 road Hanwell Hanwell
A4002 A4002 road Harlesden Harlesden Tubbs Road / Nightingale Road one-way system
A4003 A4003 road Brondesbury Willesden Willesden Lane
A4004 A4004 road Harlesden Harlesden
A4005 A4005 road West London (Hanger Lane gyratory) Roxeth
A4006 A4006 road Harrow West Hendon Also known as Kenton Road and Kingsbury Road
A4007 A4007 road Iver Heath Uxbridge
A4008 A4008 road Hatch End Watford
A4010 A4010 road High Wycombe Aylesbury
A4012 A4012 road Husborne Crawley A4146
A4013 A4013 road Kingsditch Benhall
A4014 A4014 road Pershore A449 near Little Malvern
A4015 A4015 road Cheltenham Cheltenham
A4017 A4017 road Kingswood A4174 at Bromley Heath Soundwell Road
A4018 A4018 road Bristol Cribbs Causeway
A4019 A4019 road Coombe Hill Cheltenham
A4020 A4020 road Shepherds Bush Denham Known as the Uxbridge Road for most of its length (with short stretches known by other names).
A4023 A4023 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.
A4025 A4025 road Stourport-on-Severn A449
A4026 A4026 road Sutton Coldfield Little Aston
A4029 A4029 road Edgbaston Edgbaston Pebble Mill Road, dual carriageway, formerly home to the BBC Pebble Mill Studios.
A4030 A4030 road Bearwood Smethwick
A4031 A4031 road Smethwick Walsall
A4032 A4032 road Bristol Bristol Continuation of M32 motorway to A4044 inner ring road
A4033 A4033 road Dudley Oldbury
A4034 A4034 road Quinton West Bromwich
A4036 A4036 road Dudley Pedmore
A4037 A4037 road Wednesbury Dudley
A4038 A4038 road Walsall Moxley
A4039 A4039 road Bilston Penn, West Midlands
A4040 A4040 road Birmingham Outer ring road
A4041 A4041 road West Bromwich Streetly
A4042 A4042 road Abergavenny A48, Newport
A4043 A4043 road Blaenavon B4246 Pontypool, A472
A4044 A4044 road Redcliffe, Bristol St James Barton, Bristol Inner ring road: Redcliffe Way, Temple Way, Bond Street
A4046 A4046 road A465, Rassau A467, Aberbeeg
A4047 A4047 road A4048, Tredegar A465, Brynmawr
A4048 A4048 road A467, Crosskeys A465, Tredegar
A4049 A4049 road A4048, Pontllanfraith A469, New Tredegar
A4050 A4050 road A4232, Culverhouse Cross, Cardiff A4055, Barry
A4051 A4051 road Newport North Cwmbran
A4053 A4053 road Coventry Ring Road
A4054 A4054 road A4119, Llandaff, Cardiff A470, Cefn-Coed-y-Cymmer
A4055 A4055 road A4232, Cardiff Bay, Cardiff Barry Island, Barry
A4058 A4058 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 Porth Relief road 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 A4059 road A470, Abercynon A470, Between Brecon and Cefn-Coed-y-Cymmer
A4060 A4060 road A470, Pentrebach A465, Dowlais Top
A4061 A4061 road Bridgend Hirwaun
A4063 A4063 road Bridgend Cymer
A4064 A4064 road Sam Blaengarw
A4065 A4065 road Tondu Brynmenyn
A4066 A4066 road St Clears Pendine
A4067 A4067 road West Cross, Swansea Sennybridge
A4068 A4068 road Gurnos Brynamman
A4069 A4069 road Llandovery Gwaun-Cae-Gurwen
A4071 A4071 road Dunsmore Heath Rugby
A4074 A4074 road Iffley Caversham Links Reading with Oxford
A4075 A4075 road Canaston Bridge Pembroke
A4076 A4076 road Haverfordwest Milford Haven
A4077 A4077 road Crickhowell Gilwern & Goviton
A4078 A4078 road Talgarth Three Cocks
A4079 A4079 road Three Cocks Llyswen
A4080 A4080 road Menai Bridge A55
A4081 A4081 road Llandrindod Wells Newbridge-on-Wye
A4082 A4082 road Whitley, Coventry Binley, Coventry Allard Way
A4085 A4085 road Minffordd Caernarfon
A4086 A4086 road Capel Curig Caernarfon
A4087 A4087 road Bangor Bangor
A4088 A4088 road Willesden Sudbury, London
A4089 A4089 road Alperton Wembley Park
A4090 A4090 road Wembley North Harrow
A4091 A4091 road Tamworth Wishaw
A4092 A4092 road Tonyrefail Llangeinor
A4093 A4093 road Rhondda Llangeinor
A4094 A4094 road Loudwater Maidenhead
A4095 A4095 road Faringdon Bicester Bladon Air Accident occurred near the A4095.
A4097 A4097 road Minworth Kingsbury
A4098 A4098 road Moxley Wednesbury
A4099 A4099 road Halesowen Blackheath

Four-digit roads (41xx)

Road From To Notes
A4100 A4100 road Blackheath Brierley Hill
A4101 A4101 road Kingswinford Dudley
A4102 A4102 road Amblecote Duplicate number
A4102 A4102 road Merthyr Tydfil Merthyr Tydfil
A4103 A4103 road Worcester Hereford
A4104 A4104 road Little Malvern Pershore
A4106 A4106 road Bridgend Porthcawl
A4107 A4107 road Bwlch y Clawdd Port Talbot
A4109 A4109 road Aberdulais Glynneath
A4110 A4110 road Leintwardine Hereford
A4111 A4111 road Willersley Kington
A4112 A4112 road Tenbury Wells Eardisley
A4113 A4113 road Ludlow Knighton
A4114 A4114 road Allesley Willenhall
A4115 A4115 road Templeton Cross Hands
A4117 A4117 road Near Bewdley Ludlow Passes Titterstone Clee Hill at 381 metres above sea level.
A4118 A4118 road Dyfatty Street, Swansea Port Eynon
A4119 A4119 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.
A4120 A4120 road Llanbadarn Fawr, Aberystwyth Ponterwyd It runs parallel with the A44, but on the other side of the Rheidol Valley.
A4123 A4123 road Wolverhampton Harborne (Birmingham)
A4124 A4124 road Wolverhampton Brownhills
A4125 A4125 road Northwood Bushey
A4126 A4126 road Monmore Green Coseley
A4127 A4127 road Heston Wembley
A4128 A4128 road High Wycombe Great Missenden
A4129 A4129 road Princes Risborough Thame
A4130 A4130 road Burchetts Green Rowstock The section of road between Milton Hill and Rowstock was formerly part of the A34.
A4133 A4133 road Great Witley Droitwich Spa
A4135 A4135 road Tetbury Slimbridge
A4136 A4136 road Huntley, Gloucestershire Monmouth Both ends link to A40 - goes through Forest of Dean
A4137 A4137 road Marston St Owen's Cross
A4138 A4138 road Pontardulais Llanelli
A4139 A4139 road Tenby Pembroke Dock
A4140 A4140 road Wembley Bushey Heath Salmon Street, Fryent Way, Honeypot Lane, Marsh Lane. North of Stanmore Broadway as Stanmore Hill and The Common.
A4141 A4141 road Solihull Five Ways
A4142 A4142 road Heyford Hill, Oxford Headington Part of the Oxford Ring Road
A4143 A4143 road Llanfoist Abergavenny
A4144 A4144 road Pear Tree, Oxford Redbridge Park and Ride
A4145 A4145 road Watford Rickmansworth
A4146 A4146 road Milton Keynes Hemel Hempstead
A4147 A4147 road Hemel Hempstead St Albans
A4148 A4148 road Bescot Bescot Walsall Ring Road
A4150 A4150 road Wolverhampton Ring Road
A4151 A4151 road A49 at Elton, Gloucestershire A4136 at Nailbridge Through the Forest of Dean, main town on this road is Cinderford
A4154 A4154 road Amersham Amersham on the Hill
A4155 A4155 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.
A4157 A4157 road Aylesbury Quarrendon Aylesbury outer ring road
A4158 A4158 road Oxford Iffley
A4159 A4159 road Bow Street, Aberystwyth A44 Acts as a by-pass around the northern part of Aberystwyth.
A4160 A4160 road Newport Road, Cardiff Llandough
A4161 A4161 road Ely Bridge, Cardiff Southern Way, Cardiff Runs along a part of the old A48
A4162 A4162 road Sea Mills Westbury-on-Trym
A4165 A4165 road Oxford Kidlington Banbury Road
A4167 A4167 road Birmingham A456
A4168 A4168 road Woodsetton Dudley
A4169 A4169 road Shifnal Much Wenlock
A4171 A4171 road Cainscross Badbrook
A4172 A4172 road Preston Cross Trumpet
A4173 A4173 road Stroud Gloucester
A4174 A4174 road Filton Bedminster Down, Bristol The Bristol Ring Road
A4175 A4175 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
A4176 A4176 road A4 at Hotwells A4018 at Blackboy Hill Bridge Valley Road and Upper Belgrave Road, Bristol
A4177 A4177 road Meer End Warwick
A4178 A4178 road Oxhey Watford
A4180 A4180 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 road|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.
A4182 A4182 road West Bromwich West Bromwich
A4183 A4183 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.
A4184 A4184 road Evesham Evesham
A4185 A4185 road Rowstock Chilton This road was formerly part of the A34.
A4189 A4189 road Redditch Warwick
A4196 A4196 road West Bromwich Wednesbury

Four-digit roads (42xx and higher)

Road From To Notes
A4200 A4200 road Central London (Aldwych) Mornington Crescent, Camden Kingsway, Southampton Row, Woburn Place and Eversholt Street, runs through Russell Square and Tavistock Square
A4201 A4201 road Central London (Piccadilly Circus) Regent's Park Regent Street and Portland Place, then north of the Marylebone Road as Albany Street
A4202 A4202 road Hyde Park Corner Marble Arch Park Lane, part of the London Inner Ring Road
A4204 A4204 road Kensington Notting Hill Gate Kensington Church Street
A4205 A4205 road Edgware Road station Bishops Bridge, Paddington
A4206 A4206 road Notting Hill Gate Paddington Basin
A4207 A4207 road Westbourne Grove Westbourne Park
A4208 A4208 road Ludgate Circus Holborn Circus St Bride Street is closed off to traffic (except pushbikes) and Stonecutter Street is exit only.
A4209 A4209 road Edgware Road station Lancaster Gate Sussex Gardens
A4212 A4212 road Bala Trawsfynydd
A4213 A4213 road Carmarthen
A4214 A4214 road Llanelli Hendy
A4215 A4215 road Libanus Defynnog
A4216 A4216 road Sketty Gendros
A4217 A4217 road Swansea Llansamlet
A4218 A4218 road Tenby Tenby
A4219 A4219 road Scleddau Manorowen
A4221 A4221 road Banwen Abercraf
A4222 A4222 road Cowbridge Talbot Green
A4224 A4224 road Abercynon Aberdare
A4225 A4225 road Porth Trehafod
A4226 A4226 road Bonvilston Cardiff Airport
A4229 A4229 road Pyle Porthcawl
A4230 A4230 road Llansamlet Aberdulais
A4231 A4231 road Biglis Pencoedtre
A4232 A4232 road M4 Junction 30 Cardiff East M4 Junction 33 Cardiff West Cardiff Link Road (Peripheral Distribution Road)
A4233 A4233 road Tonyrefail Aberdare
A4234 A4234 road Adam Street, Cardiff Queensgate Roundabout, Cardiff Central Link Road of the Peripheral Distribution Road
A4240 A4240 road Penllergaer Loughor
A4241 A4241 road Port Talbot Baglan Port Talbot southern distributor road
A4242 A4242 road Carmarthen Carmarthen
A4243 A4243 road Carmarthen Carmarthen
A4244 A4244 road Brynrefail Glasinfryn Reclassified from parts of B4366 and B4547
A4251 A4251 road Kings Langley Near Tring
A4252 A4252 road West Bromwich Smethwick
A4254 A4254 road Chilvers Coton Horeston Grange Nuneaton Eastern Relief Road
A4256 A4256 road Drayton Daventry Reservoir
A4259 A4259 road Swindon Wanborough
A4260 A4260 road Banbury near Pear Tree, Oxford
A4289 A4289 road Swindon Swindon
A4300 A4300 road Kettering Kettering
A4302 A4302 road Gloucester Gloucester
A4303 A4303 road Cross in Hand, A5 Junction 20 of M1 Lutterworth southern by-pass; serves Magna Park distribution centre; dualled for entire length
A4304 A4304 road Junction 20 of M1 Market Harborough
A4311 A4311 road Swindon Swindon
A4312 A4312 road Swindon Swindon
A4313 A4313 road Swindon Walcot
A4135 A4135 road Tetbury Near M5 motorway
A4320 A4320 road Arno's Vale M32 Junction 3
A4361 A4361 road Beckhampton Swindon
A4400 A4400 road Birmingham Inner Ring Road
A4440 A4440 road Worcester Worcester
A4421 A4421 road Bicester Finmere
A4444 A4444 road Bilston Moxley
A4500 A4500 road Northampton Wellingborough Formerly A45. Runs from M1 junction 16 to A509 Wellingborough ring road
A4501 A4501 road Northampton Northampton
A4508 A4508 road Billing Kingsthorpe
A4535 A4535 road Kidderminster Kidderminster
A4536 A4536 road Fernhill Heath A38
A4538 A4538 road Spetchley Martin Hussingtree
A4540 A4540 road Birmingham Middle Ring Road
A4600 A4600 road M69 Junction 2 Coventry formerly part of the A46
A4601 A4601 road Cannock Cannock

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