Route
Junction number
7
Markerpost
46.0 km
Name
Merstham Interchange
Type
Terminus
Not a terminus
Other routes
M23
Authority
Restricted turns
Full access
Services
No services
M25 J7 Merstham Interchange
Layout and signage
Lane configuration
- Lane 1 exits and returns after the junction.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
- Lane 1 exits and returns after the junction.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
Other events
Variable Speed Limits apply
- Variable Speed Limits apply
What's new
The sunlit uplands
On Saturday 31 May something historic happened. The Heads of the Valleys Road was finally complete.
Grand openings
Our much-loved Opening Booklets section has two new publications for you to explore, and we’re making some overdue changes to make them easier to find and easier to read.
Silver bullet
The Silvertown Tunnel is finally open for business. One question remains: what’s it for?
Have you seen...
Forth Bridges
There's plenty of pictures of the three magnificent bridges over the Firth of Forth at Queensferry. But not many are taken from beneath.
About this page
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Last updated
Published
Last updated
