A21

A21

Sevenoaks to Pembury

Once planned as the expressway to Hastings, the A21's high speed dual carriageway now reaches from the M25 to Royal Tunbridge Wells, serving the towns of western Kent.

Routes
A21

What's new

South London's lost motorways

Completing the story of London's epic Ringways, we've just published the Southern Radials, five more motorways that never saw the light of day.

To the north east!

Two new additions to our collection of Opening Booklets take us to Darlington and Middlesbrough.

The ghost junction

The only UK motorway that didn’t connect to ordinary roads finally got its own interchange in 2019. But it's not open, because it still doesn’t touch any ordinary roads.

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Have you seen...

North Cross Route

The route and the history of the North Cross Route, proposed in the 1960s as the northern side of London's innermost motorway ring road.