MT 95/653

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London-South Wales motorway (No.7): Chiswick-Langley; design

Date range1961
LocationNational Archives (see all files stored here)
CatalogueSee entry
File baseSeries MT, subseries MT 95

Wasteoftime.jpg This file is a waste of time.
You are advised to avoid it like the plague. Its file title sounds rather interesting but it may contain only dull papers that fail to illuminate the subject matter or it may not even be related to the subject suggested by the title.


The story of the London section of the M4's planning process is a long one split across many files. Some are more interesting than others. This one is very useful if you want something to which you can compare other files and find them interesting.

It has an awful lot of detail on the precise capacity of the roundabout at the northern end of the Heathrow tunnel, which was about to have a three-lane motorway spur plugged in to it and was too small to do the job. There's lots of stuff about moving and diverting underground services from the path of the viaduct, which is a theme of all the files about this section of motorway and was obviously a major concern. There is a small discussion of lighting, which might be interesting from the point of view that this was the first section of motorway to be illuminated, but actually isn't, because this is only discussing temporary lighting on the A4 during the construction works. And finally there is an extended discussion about the style of railings to be used on the new pedestrian subways on the A4.

Links to other files

MT 95/309 London-South Wales Motorway (M4): design of Chiswick-Langley section (1957-1960)
MT 95/654 London-South Wales motorway (No.7): Chiswick-Langley; design (1961-1962)
MT 95/726 Chiswick-Langley: general. Includes 10 photographs depicting: M4 motorway: construction at Chiswick, Brentford and Boston Manor (1962-1963)
MT 95/727 Chiswick-Langley: design (1962-1964)
MT 121/135 London South Wales Motorway: Chiswick-Langley Special Road; Cromwell Road extension to Slough by-pass (1957-1961)

People with camera copies

Chris Marshall has a partial copy.