| Road |
From |
To |
Notes |
 A4 road |
City of London (Holborn Circus) |
Avonmouth |
Originally London to Bath |
 A40 road |
City of London (near St. Paul's Cathedral) |
Fishguard |
The longest A road in Zone 4 at 256 miles long |
 A41 road |
Central London (near Marble Arch) |
Birkenhead |
|
 A42 road |
Appleby Magna |
Diseworth |
A continuation of the M42 hence the use of A42 despite the road being entirely within Zone 5. |
 A43 road |
M40 motorway Junction 10 north of Bicester |
Stamford |
|
 A44 road |
Oxford |
Aberystwyth |
Officially the most dangerous road in Wales between Aberystwyth and Llangurig. |
 A45 road |
Birmingham |
Near Thrapston |
|
 A46 road |
Bath |
Cleethorpes |
|
 A47 road |
Birmingham |
Great Yarmouth |
|
 A48 road |
Highnam near Gloucester |
Carmarthen |
Originally began in Worcester. Worcester to Newport is now A449. |
 A49 road |
Ross-on-Wye |
Bamber Bridge |
|
 A400 road |
Central London (Trafalgar Square) |
Archway |
|
 A401 road |
Central London (Piccadilly Circus) |
Angel |
|
 A402 road |
Central London (Marble Arch) |
Stamford Brook, Chiswick |
|
 A403 road |
M48 motorway Junction 1 near Aust |
Avonmouth |
|
 A404 road |
Central London (Edgware Road station) |
Maidenhead |
|
 A405 road |
Leavesden Green |
Near Park Street |
|
 A406 road |
Gunnersbury |
Beckton |
The North Circular Road |
 A407 road |
Harlesden |
Child's Hill |
|
 A408 road |
Harmondsworth |
Uxbridge |
|
 A409 road |
Northwick Park Hospital |
Bushey |
|
 A410 road |
Pinner |
Edgware |
|
 A411 road |
Watford |
Barnet |
|
 A412 road |
Slough |
Watford |
|
 A413 road |
Gerrards Cross |
Towcester |
|
 A414 road |
Near Hemel Hempstead |
Maldon |
|
 A415 road |
Berinsfield |
Witney |
|
 A416 road |
Amersham |
Berkhamsted |
|
 A417 road |
Streatley |
Leominster |
|
 A418 road |
Tiddington |
Ascot |
|
 A419 road |
Whitminster |
Swindon |
|
 A420 road |
Bristol |
Oxford |
|
 A421 road |
Brackley |
Wyboston |
|
 A422 road |
Bedford |
Worcester |
Concurrent with the A46 between Stratford-upon-Avon and Alcester |
 A423 road |
Hinksey Hill |
Coventry |
Small section of the road is part of the Oxford Ring Road. Reprised at Banbury. |
 A424 road |
Burford |
A44 near Bourton-on-the-Hill |
|
 A425 road |
Daventry |
Warwick |
|
 A426 road |
Leicester |
Southam |
|
 A427 road |
Market Harborough |
Oundle |
|
 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 road |
Chippenham |
Coventry |
|
 A430 road |
Quedgeley |
Longford, Gloucester |
|
 A431 road |
Bristol |
Bath |
|
 A432 road |
Bristol |
Old Sodbury |
|
 A433 road |
A46 at Dunkirk |
A429 SW of Cirencester |
|
 A435 road |
Birmingham |
Cirencester |
Concurrent with the A46 between Alcester and Teddington Hands |
 A436 road |
A417 near Brockworth |
A44 near Salford |
|
 A437 road |
Harlington, London |
A40 Western Avenue near Ickenham |
Originally Gloucester to Newport, now A48. |
 A438 road |
M5 motorway Junction 9 |
Llanfilo |
|
 A439 road |
Stratford-upon-Avon |
A46 4 miles SW of Warwick |
|
 A441 road |
Birmingham |
Cookhill |
|
 A442 road |
Droitwich |
Whitchurch |
|
 A443 road |
Worcester |
Newnham Bridge |
|
 A444 road |
Baginton |
Burton upon Trent |
|
 A445 road |
Warwick |
A45 at Ryton-on-Dunsmore |
|
 A446 road |
Little Packington |
Roughley |
|
 A447 road |
Hinckley |
Coalville |
|
 A448 road |
Kidderminster |
Studley |
|
 A449 road |
Newport |
Stafford |
|
 A450 road |
Torton |
West Hagley |
|
 A451 road |
Stourbridge |
Great Witley |
|
 A452 road |
Leamington Spa |
Brownhills |
|
 A453 road |
Nottingham |
Birmingham |
|
 A454 road |
Bridgnorth |
Four Oaks |
|
 A456 road |
Birmingham |
Woofferton |
|
 A457 road |
Birmingham |
Sedgley |
|
 A458 road |
Mallwyd |
Quinton |
Originally started in Dolgellau. |
 A459 road |
Halesowen |
Wolverhampton |
|
 A460 road |
Wolverhampton |
Rugeley |
|
 A461 road |
Lichfield |
Stourbridge |
Concurrent with the A41 between Wednesbury & Great Bridge |
 A462 road |
Wednesbury |
Laney Green |
|
 A463 road |
Wombourne |
Willenhall |
|
 A464 road |
Oaken |
Hollinswood |
|
 A465 road |
Bromyard |
M4 motorway, Llandarcy |
|
 A466 road |
Kingsthorne |
Chepstow |
|
 A467 road |
Duffryn, Newport |
A465, Brynmawr |
|
 A468 road |
Bassaleg, Newport |
A470, Nantgarw |
|
 A469 road |
A4161, Roath, Cardiff |
A465, Rhymney |
|
 A470 road |
Cardiff |
Llandudno |
Originally Cardiff to Brecon. |
 A472 road |
Treharris |
Usk |
|
 A473 road |
Pontypridd |
Bridgend |
|
 A474 road |
Briton Ferry |
Ammanford |
|
 A475 road |
Newcastle Emlyn |
Lampeter |
|
 A476 road |
Llanelli |
Llandeilo |
|
 A477 road |
St Clears |
Johnston |
|
 A478 road |
Cardigan |
Tenby |
|
 A482 road |
Aberaeron |
Llanwrda |
|
 A483 road |
Swansea |
Chester |
|
 A484 road |
Cardigan |
Cadle near Swansea |
by way of Newcastle Emlyn, Carmarthen and Llanelli |
 A485 road |
Tanerdy |
Llanfarian |
|
| Image:UK road A486.PNG A486 road |
New Quay |
A484 near Saron |
|
 A487 road |
Haverfordwest |
Bangor |
|
 A488 road |
Penybont |
Shrewsbury |
|
 A489 road |
Craven Arms |
Machynlleth |
|
| Image:UK road A490.PNG A490 road |
Churchstoke |
Llanfyllin |
|
 A491 road |
Lydiate Ash |
Wall Heath |
|
 A493 road |
Machynlleth |
Dolgellau |
Via Tywyn |
 A494 road |
Queensferry |
Dolgellau |
Extension to M56 motorway open late 2008. |
 A495 road |
Whitchurch |
Oswestry |
|
 A496 road |
Llanelltyd |
Blaenau Ffestiniog |
Via Barmouth |
 A497 road |
Porthmadog |
Nefyn |
|
 A498 road |
Pen-y-Gwryd |
Porthmadog |
|
 A499 road |
A487 |
Abersoch |
|
 A4000 road |
Acton Town |
Harlesden |
|
 A4001 road |
Hanwell |
Hanwell |
|
 A4002 road |
Harlesden |
Harlesden |
Tubbs Road / Nightingale Road one-way system |
 A4003 road |
Brondesbury |
Willesden |
Willesden Lane |
 A4004 road |
Harlesden |
Harlesden |
|
 A4005 road |
West London (Hanger Lane gyratory) |
Roxeth |
|
 A4006 road |
Harrow |
Kenton |
Also known as Kenton Road |
 A4007 road |
Iver Heath |
Uxbridge |
|
 A4008 road |
Hatch End |
Watford |
|
 A4010 road |
High Wycombe |
Aylesbury |
|
 A4012 road |
Husborne Crawley |
A4146 |
|
 A4013 road |
Kingsditch |
Benhall |
|
 A4014 road |
Pershore |
A449 near Little Malvern |
|
 A4015 road |
Cheltenham |
Cheltenham |
|
 A4017 road |
Bristol |
Bromley Heath |
|
 A4018 road |
Bristol |
Cribbs Causeway |
|
 A4019 road |
Coombe Hill |
Cheltenham |
|
 A4020 road |
Shepherds Bush |
Denham |
|
 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 road |
Stourport-on-Severn |
A449 |
|
 A4026 road |
Sutton Coldfield |
Little Aston |
|
 A4029 road |
Edgbaston |
Edgbaston |
|
 A4030 road |
Bearwood |
Smethwick |
|
 A4031 road |
Smethwick |
Walsall |
|
 A4032 road |
Bristol |
Bristol |
Continuation of M32 motorway to A4044 inner ring road |
 A4033 road |
Dudley |
Oldbury |
|
 A4034 road |
Quinton |
West Bromwich |
|
 A4036 road |
Dudley |
Pedmore |
|
 A4037 road |
Wednesbury |
Dudley |
|
 A4038 road |
Walsall |
Moxley |
|
 A4039 road |
Bilston |
Penn, West Midlands |
|
 A4040 road |
|
|
Birmingham Outer ring road |
 A4041 road |
West Bromwich |
Streetly |
|
 A4042 road |
Abergavenny |
A48, Newport |
|
 A4043 road |
Blaenavon B4246 |
Pontypool, A472 |
|
 A4044 road |
Redcliffe |
Bristol |
Inner ring road |
 A4046 road |
A465, Rassau |
A467, Aberbeeg |
|
 A4047 road |
A4048, Tredegar |
A465, Brynmawr |
|
 A4048 road |
A467, Crosskeys |
A465, Tredegar |
|
 A4049 road |
A4048, Pontllanfraith |
A469, New Tredegar |
|
 A4050 road |
A4232, Culverhouse Cross, Cardiff |
A4055, Barry |
|
 A4051 road |
Newport |
North Cwmbran |
|
 A4053 road |
|
|
Coventry Ring Road |
 A4054 road |
A4119, Llandaff, Cardiff |
A470, Cefn-Coed-y-Cymmer |
|
 A4055 road |
A4232, Cardiff Bay, Cardiff |
Barry Island, Barry |
|
 A4058 road |
A473, Glyntaff |
A4061, Treorchy |
|
 A4059 road |
A470, Abercynon |
A470, Between Brecon and Cefn-Coed-y-Cymmer |
|
 A4060 road |
A470, Pentrebach |
A465, Dowlais Top |
|
 A4061 road |
Bridgend |
Hirwaun |
|
 A4063 road |
Bridgend |
Cymer |
|
 A4064 road |
Sam |
Blaengarw |
|
 A4065 road |
Tondu |
Brynmenyn |
|
 A4066 road |
St Clears |
Pendine |
|
 A4067 road |
West Cross, Swansea |
Sennybridge |
|
 A4068 road |
Gurnos |
Brynamman |
|
 A4069 road |
Llandovery |
Gwaun-Cae-Gurwen |
|
 A4071 road |
Dunsmore Heath |
Rugby |
|
 A4072 road |
M4, Junction 28, Newport |
A467, Bassaleg (concurrent with A467) |
|
 A4074 road |
Iffley |
Caversham |
Links Reading with Oxford |
 A4075 road |
Canaston Bridge |
Pembroke |
|
 A4076 road |
Haverfordwest |
Milford Haven |
|
 A4077 road |
Crickhowell |
Gilwern & Goviton |
|
 A4078 road |
Talgarth |
Three Cocks |
|
 A4079 road |
Three Cocks |
Llyswen |
|
 A4080 road |
Menai Bridge |
A55 |
|
 A4081 road |
Llandrindod Wells |
Newbridge-on-Wye |
|
 A4082 road |
Whitley, Coventry |
Binley, Coventry |
Allard Way |
 A4085 road |
Minffordd |
Caernarfon |
|
 A4086 road |
Capel Curig |
Caernarfon |
|
 A4087 road |
Bangor |
Bangor |
|
 A4088 road |
Willesden |
Neasden |
|
 A4089 road |
Alperton |
Wembley Park |
|
 A4090 road |
Wembley |
North Harrow |
|
 A4091 road |
Tamworth |
Wishaw |
|
 A4092 road |
Tonyrefail |
Llangeinor |
|
 A4093 road |
Rhondda |
Llangeinor |
|
 A4094 road |
Loudwater |
Maidenhead |
|
 A4095 road |
Faringdon |
Bicester |
|
 A4097 road |
Minworth |
Kingsbury |
|
 A4098 road |
Moxley |
Wednesbury |
|
 A4099 road |
Halesowen |
Blackheath |
|
 A4100 road |
Blackheath |
Brierley Hill |
|
 A4101 road |
Kingswinford |
Dudley |
|
 A4102 road |
Amblecote |
|
Duplicate number |
| A4102 road |
Merthyr Tydfil |
Merthyr Tydfil |
 A4103 road |
Worcester |
Hereford |
|
 A4104 road |
Little Malvern |
Pershore |
|
 A4106 road |
Bridgend |
Porthcawl |
|
 A4107 road |
Bwlch y Clawdd |
Port Talbot |
|
 A4109 road |
Aberdulais |
Glynneath |
|
 A4110 road |
Leintwardine |
Hereford |
|
 A4111 road |
Willersley |
Kington |
|
 A4112 road |
Tenbury Wells |
Eardisley |
|
 A4113 road |
Ludlow |
Knighton |
|
 A4114 road |
Allesley |
Willenhall |
|
 A4115 road |
Templeton |
Cross Hands |
|
 A4117 road |
Near Bewdley |
Ludlow |
|
 A4118 road |
Dyfatty Street, Swansea |
Port Eynon |
|
 A4119 road |
Tonypandy |
Cardiff Bay |
|
 A4120 road |
Llanbadarn Fawr, Aberystwyth |
Ponterwyd |
It runs parallel with the A44, but on the other side of the Rheidol Valley. |
 A4123 road |
Wolverhampton |
Harborne (Birmingham) |
|
 A4124 road |
Wolverhampton |
Brownhills |
|
 A4125 road |
Northwood |
Bushey |
|
 A4126 road |
Monmore Green |
Coseley |
|
 A4127 road |
Heston |
Wembley |
|
 A4128 road |
High Wycombe |
Great Missenden |
|
 A4129 road |
Princes Risborough |
Thame |
|
 A4130 road |
Burchetts Green |
Rowstock |
The section of road between Milton Hill and Rowstock was formerly part of the A34. |
 A4133 road |
Great Witley |
Droitwich Spa |
|
 A4135 road |
Tetbury |
Slimbridge |
|
 A4136 road |
Huntley |
Monmouth |
|
 A4137 road |
Marston |
St Owen's Cross |
|
 A4138 road |
Pontardulais |
Llanelli |
|
 A4139 road |
Tenby |
Pembroke Dock |
|
 A4140 road |
Wembley |
Bushey Heath |
|
 A4141 road |
Solihull |
Five Ways |
|
 A4142 road |
Heyford Hill, Oxford |
Headington |
Part of the Oxford Ring Road |
 A4143 road |
Llanfoist |
Abergavenny |
|
 A4144 road |
Pear Tree, Oxford |
Redbridge Park and Ride |
|
|
