Route
Junction number
16
Markerpost
103.0 km
Name
Denham Interchange
Terminus
Not a terminus
Other routes
M40
Authority
Restricted turns
Full access
Services
No services
M25 J16 Denham 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
Where did the M25 come from?
London’s notorious orbital motorway turns 40 years old today. Where did it come from - and why the number “25”?
The long way round
When a road is closed, why isn't the diversion route just the quickest way past the closure?
Signs and sensibility
The one great attempt to make London’s streets logical - and how one retired chauffeur’s favourite routes changed the way you get around the capital.
Have you seen...
Mistakes
Making road signs is a tricky business, but fortunately the professionals who design them get it right. Usually.
About this page
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