M3

M3

London to Southampton

The M3 is the road south-west from London, serving the densely populated towns in the west of Surrey, the north of Hampshire and the south of Berkshire. It's not especially long as major inter-urban motorways go, but it certainly isn't quiet, and it's had more than its share of controversy.

Routes
M3

M3 and A316

A grand south western approach road from London to Basingstoke and Southampton: the A316 was entangled in local politics, and the M3 was never to enter London at all.

Routes

What's new

Imperfectly Odd: Batheaston Bypass

It has viaducts, a tunnel and plenty of controversy, but the amazing Batheaston Bypass doesn’t really work. What went wrong?

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.

Share this page

Have you seen...

Road signs

A field guide to the UK's road signs, explaining the colours, shapes, symbols and everything else you need to know to avoid putting a foot (or a wheel) wrong.