HLG 159/2333

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The Old Chiswick Protection Society: realisation of the Greater London Council proposals on roads in Chiswick; map of the Hogarth Interchange

Date range1971
LocationNational Archives (see all files stored here)
CatalogueSee entry
File baseSeries HLG, subseries HLG 159

Thumbs up.png This file is truly delightful.
It is likely to bring a smile to your face, probably because it contains the sort of thing that makes trawling through dusty archive documents worthwhile. The thing in this file that makes your day might actually have nothing to do with its subject matter.


This document contains a single piece of paper stuffed into an envelope but it's exactly what I've been looking for. The sheet of paper extends to A1 size and shows a 1/1250 scale plan of Hogarth Roundabout transformed into a large GSJ with the A316 merging onto the A4 into Central London and a roundabout thingy for local traffic. The detail shown is unbelievable and includes things such as lane markings. This tells us the A316 and A4 to the west are both D3 and the A4 between Hogarth Roundabout and Hammersmith is D4. Six lanes merging into four would have been quite a sight in the morning rush!

The map is based on OS 1/1250 mapping but has been completely redrawn by hand. Buildings are shown black or light grey depending on whether they're staying or have a date with the bulldozer. Dorchester Grove and Cornwall Grove are completely eliminated and Fullers Brewery loses some of its land. Chiswick Lane North is dualled and forms a link to Chiswick High Road.

As if this isn't enough there's more. In the corner of the map is a 6" inset showing the whole Chiswick Triangle complex in full detail. The junctions are different to those shown in HLG 159/2274, GLC/DG/AR/6/093 and the M4 page in the CBRD Ringway article so it makes you wonder how many designs exist for these junctions. In addition it shows all the motorways as depressed and most of the local roads stopped up with just the odd few passing over the motorway, including Sutton Court Road so that answers the question as to whether a GSJ was planned there. And I haven't finished yet. The issue of replacing, widening or duplicating the elevated M4 is partly answered as there's a little note in the corner of the map "The duplication of the elevated M4 shown below is not shown in the GLDP but implicit in traffic loads forecast".

Links to related files

HLG 159/386 Chiswick Triangle: environmental objections; questions to London Borough of Hounslow (1972)
HLG 159/936 London Borough of Hounslow: study of Greater London Development Plan highway and transport proposals for Hounslow; Chiswick ringway plans (1971)
HLG 159/2274 The Grove Park Group: consideration of the West London Interchange at Chiswick and likely physical impact on the Grove Park area (1971)

People with camera copies

James Bancroft obviously has copies of this.