The A40 goes from Inner London to Fishguard in Wales. The Easter section has effectively been replaced by the M40 for trunk road traffic. This used to be an old route to Ireland

Contents 1 Junctions with other classified roads 1.1 England 1.1.1 Greater London 1.1.1.1 City of London 1.1.1.2 Holborn 1.1.1.3 St Giles 1.1.1.4 Soho 1.1.1.5 Marylebone 1.1.1.6 Lisson Grove 1.1.1.7 Shepherd's Bush 1.1.1.8 Acton 1.1.1.9 Alperton 1.1.1.10 Greenford 1.1.1.11 Northolt 1.1.1.12 Ruislip 1.1.1.13 Ickenham 1.1.2 Buckinghamshire 1.1.2.1 Denham 1.1.2.2 Gerrards Cross 1.1.2.3 Beaconsfield 1.1.2.4 Loudwater 1.1.2.5 High Wycombe 1.1.2.6 Stokenchurch 1.1.3 Oxfordshire 1.1.3.1 Aston Rowant 1.1.3.2 Postcombe 1.1.3.3 Milton Common 1.1.3.4 Tiddington 1.1.3.5 Forest Hill 1.1.3.6 Oxford 1.1.3.7 Eynsham 1.1.3.8 Witney 1.1.3.9 Burford 1.1.4 Gloucestershire 1.1.4.1 Northleach 1.1.4.2 Andoversford 1.1.4.3 Cheltenham 1.1.4.4 Gloucester 1.1.4.5 Huntley 1.1.5 Herefordshire 1.1.5.1 Lea 1.1.5.2 Ross on Wye 1.1.5.3 Whitchurch 1.2 Wales (Cymru) 1.2.1 Gwent 1.2.1.1 Monmouth (Trefynwy) 1.2.1.2 Raglan (Rhaglan) 1.2.1.3 Abergavenny (Y Fenni) 1.2.2 Powys 1.2.2.1 Crickhowell 1.2.2.2 Tretower 1.2.2.3 Bwlch 1.2.2.4 Brecon 1.2.2.5 Sennybridge 1.2.3 Carmarthenshire (Sir Gaerfyrddin) 1.2.3.1 Llandovery (Llanymddyfri) 1.2.3.2 Llanwrda 1.2.3.3 Ashfield 1.2.3.4 Llandeilo 1.2.3.5 Court Henry 1.2.3.6 Nantgaredig 1.2.3.7 Carmarthen (Caerfyrddin) 1.2.3.8 Sarnau 1.2.3.9 St Clears (Sanclêr) 1.2.3.10 Whitland (Hendy-Gwyn) 1.2.4 Pembrokeshire (Sir Benfro) 1.2.4.1 Narberth (Arberth) 1.2.4.2 Haverfordwest (Hwlffordd) 1.2.4.3 Letterston 1.2.4.4 Fishguard (Abergwaun)

Junctions with other classified roadsEdit

Italics - not official name of junction.
Not italics - official name of junction.

Starts without primary status.

EnglandEdit

Greater LondonEdit

City of LondonEdit

• Museum of London: A1, A1211.

HolbornEdit

• Holborn Circus: A4, A4208, B500, B521.
• Chancery Lane station: A5200.
• Warwick Court: B400.
• Holborn Station: A4200.

St GilesEdit

• Princes Circus: A400, A401, B401, B404.

SohoEdit

• St Giles' Circus: A400.

MaryleboneEdit

• Oxford Circus: A4201.
• New Bond Street: B406.
• Bond Street station: B524.
• Selfridges: A41.
• Marble Arch: A5, A4202.

The A5 takes us north from Marble Arch to Lisson Grove (Egware Road station).

Gains primary status.

Lisson GroveEdit

• Marylebone Flyover: A501.

Shepherd's BushEdit

• White City: A219, A3220 (formerly M41).

ActonEdit

• Gipsey Corner: A4000.

AlpertonEdit

• Hanger Lane: A406, A4005.

GreenfordEdit

• Perivale: B456.
• Greenford Roundabout: A4127.

NortholtEdit

• Target Roundabout: A312.

RuislipEdit

• Polish War Memorial: A4180.

IckenhamEdit

• Hillingdon Circus: A437, B466.
• Swakeleys Roundabout: B483.

BuckinghamshireEdit

DenhamEdit

• Junction 1 (M40): M40, A412, A4020.
• Denham: A412.
• Tatling End: A413.

Loses primary status.

Gerrards CrossEdit

• Gerrards Cross Common: B416.

BeaconsfieldEdit

• A355 (towards Slough).
• London End / Park Lane: A355 (towards Amersham).
• Beaconsfield Old Town: B474.
• White Hill / Wooburn Green Lane: B4440.

LoudwaterEdit

• Junction 3 (M40): M40 (towards London), A4094.

High WycombeEdit

• Abbey Way: A404.
• Bus station: A4128.
• West Wycombe Road / Chapel Lane: A4010 (towards Handy Cross).

Gains primary status.

• West Wycombe Road / Bradenham Road: A4010 (towards Aylesbury).

Loses primary status.

StokenchurchEdit

• Wycombe Road / Marlow Road: B482.
• Junction 5 (M40): M40.

OxfordshireEdit

Aston RowantEdit

• A40 / Chinnor Road: B4009.

PostcombeEdit

• B4012.

Milton CommonEdit

• Junction 7 (M40): M40, A329.

TiddingtonEdit

• A418.
• Junction 8a (M40): Oxford service area, M40.
• Junction 8 (M40): M40, A418.

Forest HillEdit

• Lyhill Quarries: B4027.

OxfordEdit

• London Road / North Way: A420, A4142.
• Northern By-Pass Road / Marsh Lane: B4150.
• Elsfield Way / Banbury Road: A4165.
• North Way / Five Mile Drive: A44.

EynshamEdit

• B4449.

WitneyEdit

• Shores Green: B4022.
• The Moors: A415.

BurfordEdit

• Oxford Road / Shilton Road: B4020.
• A361.
• B4425.

GloucestershireEdit

NorthleachEdit

• A429.

AndoversfordEdit

• A436.

CheltenhamEdit

• A435.
• A46.
• A4013.
• B4063.
• Junction 11 (M5): M5.

GloucesterEdit

• A417, B4063.
• A38.
• A417, A430.
• B4315.
• A48.

HuntleyEdit

• B4216.
• A4136.

HerefordshireEdit

LeaEdit

• A40 / Coach Road: B4222.
• B4224.

Ross on WyeEdit

• Wolf Business Park: B4260.
• A40 / Ledbury Road: A449, B4234.
• Wilton: A49, B4260.

WhitchurchEdit

• Hill Farm': A4137, B4229.
• Whitchurch: B4164.

Wales (Cymru)Edit

GwentEdit

Monmouth (Trefynwy)Edit

• Dixton: A466.
• Wye Bridge: A466.
• Over Monnow: B4293.

Raglan (Rhaglan)Edit

• A449.

Abergavenny (Y Fenni)Edit

• A465, A4042, B4598.
• Monk Street / Lower Monk Street: B4233.
• Park Road / Hereford Road: B4521.
• Grofield: A4143.

PowysEdit

CrickhowellEdit

• Beaufort Street / New Road: A4077.

TretowerEdit

• A479.

BwlchEdit

• B4560 (southbound).
• B4560 (northbound).

BreconEdit

• B4558.
• A470 (northbound), B4601.
• A470 (southbound), B4601.

SennybridgeEdit

• A4215.

Carmarthenshire (Sir Gaerfyrddin)Edit

Llandovery (Llanymddyfri)Edit

• King's Road / Stone Street: B4344.
• Broad Street / Queensway: A4069.
• Queensway / New Road: A483 (northbound).

LlanwrdaEdit

• A482.

AshfieldEdit

• A4069.

LlandeiloEdit

• Beechwood Industrial Estate: B4302.
• Rhosmaen Street: A483 (southbound).

Court HenryEdit

• B4297.

NantgaredigEdit

• B4310.

Carmarthen (Caerfyrddin)Edit

• West Wales General Hospital: A485.
• Heol Llangynnwr: A484 (northbound), B4300.
• Pensarn: A48, A484 (southbound).
• Pont Lesneven: A4242.
• Johnstown: B4312.
• Llysonen Road: B4312.

SarnauEdit

• B4298.

St Clears (Sanclêr)Edit

• St Clears: A477, A4066, B4299.

Whitland (Hendy-Gwyn)Edit

• Spring Gardens: B4328.

Pembrokeshire (Sir Benfro)Edit

Narberth (Arberth)Edit

• Penblewin: A478.
• Redstone Cross: B4313.
• Robeston Wathen: B4314.
• Canaston Bridge: A4075.

Haverfordwest (Hwlffordd)Edit

• A4076.
• Withybush: B4329.

LetterstonEdit

• Upper Terrace / St David's Road: B4331.

Fishguard (Abergwaun)Edit

• Scleddau: A4219.
• High Street / Main Street / West Street: A487 (northbound).
• Fishguard Harbour: A487 (southbound).

End of route.

A Roads 1-99
Single-digit A Roads:	A1 • A2 • A3 • A4 • A5 • A6 • A8 • A9
Two-digit A Roads	A10 • A11 • A12 • A13 • A14 • A15 • A16 • A17 • A18 • A19 • A20 • A21 • A22 • A23 • A24 • A25 • A26 • A27 • A28 • A29 • A30 • A31 • A32 • A33 • A34 • A35 • A36 • A37 • A38 • A39 • A40 • A41 • A42 • A43 • A44 • A45 • A46 • A47 • A48 • A49 • A50 • A51 • A52 • A53 • A54 • A55 • A56 • A57 • A58 • A59 • A60 • A61 • A62 • A63 • A64 • A65 • A66 • A67 • A68 • A69 • A70 • A71 • A72 • A73 • A74 • A75 • A76 • A77 • A78 • A79 • A80 • A81 • A82 • A83 • A84 • A85 • A86 • A87 • A88 • A89 • A90 • A91 • A92 • A93 • A94 • A95 • A96 • A97 • A98 • A99 •
Converted A-roads (motorways)	A1(M) • A3(M) • A38(M) • A48(M) • A57(M) • A58(M) • A64(M) • A66(M) • A74(M) • A167(M) • A194(M) • A308(M) A329(M) • A404(M) • A601(M) • A627(M) • A823(M) • A6144(M)
See also:	List of motorways