A1

A1 and A1(M)

Great North Road

London to Edinburgh

The A1 is the UK's longest numbered road and probably its most famous, linking London with Edinburgh and forming the backbone of the road network in mainland Britain.

Routes

A1 and A1(M)

The Great North Road was only ever going to play a walk-on part in London's proposed urban motorway network.

Routes

The wonderful A1 21 December 2017

The A1 is the UK's longest road, but the part within London is easily overlooked. Here's five things you (maybe) didn't know about it.

Routes

What's new

Go west! New Ringways pages are here

A new set of Ringways pages are now online, looking at unbuilt motorways and road projects west of London.

No smoke without ire

London's Ultra Low Emission Zone has just expanded to cover the whole inner city, and across the UK, other cities are implementing their own Clean Air Zones. Is this the future?

Devon help us

Road signs are colour coded for different types of road, but in Devon there are more colours than anywhere else. What do Devon's colourful signs mean?

Have you seen...

The Magic Roundabout

Officially the seventh most frightening thing on the road network - but actually it might just be the most efficient junction ever designed.