Junction number
None
Markerpost
Unknown
Name
Unknown
Other routes
None
M25 J21A Bricket Wood Interchange
Layout and signage
Lane configuration
- Lane 1 exits and does not return.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
- Lane 1 is gained from the entry sliproad.
- Lane 2 continues, with option to exit.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
Other events
Variable Speed Limits apply
- Variable Speed Limits apply
What's new
Silver bullet
The Silvertown Tunnel is finally open for business. One question remains: what’s it for?
Skid Risk, Accident, Fog
For the first time, we can share pictures of the pioneering experiment that lit up the Worcestershire countryside with enormous signs 61 years ago.
All change
In July 2024, a new Government entered office with a very different set of priorities. What does it mean for a faltering roads programme?
Have you seen...
Harry Yeadon
A civil engineer, working principally in the North West of England, responsible for many of the area's motorways.
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