Chronology Maps

1983 1984 1985

Click a section name to see full details and a map.

Completed Route Name Start End Original number
M25 Waltham Cross - Theydon J25 Waltham Cross J27 Theydon
M25 Bignell’s Corner - Potters Bar J23 Bignell’s Corner J24 Potters Bar A1178
M27 Chilworth - Stoneham J4 Chilworth J5 Stoneham
M65 Blackburn - Clayton-le-Moors J6 Whitebirk J7 Hyndburn

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What's new

The forever bottleneck, part 2

The second part of the story, where we learn why exactly the M4 gets narrower on the final approach to Europe’s biggest city.

The forever bottleneck, part 1

The M4 into London was one of the UK's earliest and most ambitious motorway projects. It was bold, pioneering... and almost instantly regretted.

Hello, here's my ridiculous side project

An introduction to what I write, and why I write it, and where my strange new road sign simulator fits in to all this.

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Road Numbers

We'd be lost without them, but there is nothing straightforward about the seemingly simple business of giving roads a number.