A40 | |
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Route information | |
History: | Constructed 1920s–1992 |
Major junctions | |
From: | City of London |
A1 road A201 road A4 road A5200 road A4200 road A401 road A400 road A4201 road A41 road A4202 road A402 road A5 road A501 road A404 road A3220 road A219 road A4000 road A406 road A4127 road A312 road A4180 road A437 road M40 motorway |
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To: | Denham Roundabout |
Location | |
Primary destinations: |
M40 M25 |
Road network | |
The A40 is a major trunk road connecting London to Fishguard, Wales. Starting from the City, the A40 in London is an A road passing through seven London Boroughs: the City of London, Camden, Westminster, Kensington & Chelsea, Hammersmith & Fulham, Ealing and Hillingdon, to Junction 1 of the M40 motorway in Denham, Buckinghamshire.
The road has been re-routed several times in the last 100 years – part of the route of the London section of the A40 was laid out in the 1920s and 1930s when Western Avenue was built – now most of it is grade-separated, dual carriageway (divided highway). In the 1960s Westway was constructed, easing traffic access to and from the centre of the city. The A40 links the City of London and the West End to the M40 motorway and M25 motorway. The route is called The London to Fishguard Trunk Road (A40) in legal documents and acts.