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Formerly the Highways Agency (1994-2015) and Highways England (2015-2021).

M26 (M25 J5) Chevening Interchange

Route

M26

Name

Chevening Interchange

Highway Authority

National Highways

Location type

Non-standard interchange

M25 J31 Purfleet Interchange

Route

M25 and A282

Name

Purfleet Interchange

Highway Authority

National Highways

Location type

Roundabout Interchange

M25 J30 Mar Dyke Interchange

Route

M25 and A282

Name

Mar Dyke Interchange

Highway Authority

National Highways

Location type

Three Level Stacked Roundabout

M25 J29 Cranham Interchange

Route

M25 and A282

Name

Cranham Interchange

Highway Authority

National Highways

Location type

Three Level Stacked Roundabout

M25 J28 Brook Street Interchange

Route

M25 and A282

Name

Brook Street Interchange

Highway Authority

National Highways

Location type

Three Level Stacked Roundabout

M25 J27 Theydon Interchange

Route

M25 and A282

Name

Theydon Interchange

Highway Authority

National Highways

Location type

Whirlpool

M25 Bell Common Tunnel

Route

M25 and A282

Name

Bell Common Tunnel

Highway Authority

National Highways

Location type

Tunnel

M25 J26 Waltham Abbey Interchange

Route

M25 and A282

Name

Waltham Abbey Interchange

Highway Authority

National Highways

Location type

Dumbbell

M25 Holmesdale Tunnel

Route

M25 and A282

Name

Holmesdale Tunnel

Highway Authority

National Highways

Location type

Tunnel

M25 J25 Waltham Cross Interchange

Route

M25 and A282

Name

Waltham Cross Interchange

Highway Authority

National Highways

Location type

Roundabout Interchange

M25 J24 Potters Bar Interchange

Route

M25 and A282

Name

Potters Bar Interchange

Highway Authority

National Highways

Location type

Roundabout Interchange

M25 J23 Bignells Corner

Route

M25 and A282

Name

Bignells Corner

Highway Authority

National Highways

Location type

Three Level Stacked Roundabout

M25 J22 The Bell Interchange

Route

M25 and A282

Name

The Bell Interchange

Highway Authority

National Highways

Location type

Non-standard interchange

M25 J21A Bricket Wood Interchange

Route

M25 and A282

Name

Bricket Wood Interchange

Highway Authority

National Highways

Location type

Roundabout Interchange

M25 J21 Chiswell Interchange

Route

M25 and A282

Name

Chiswell Interchange

Highway Authority

National Highways

Location type

Non-standard interchange

M25 J20 Kings Langley Interchange

Route

M25 and A282

Name

Kings Langley Interchange

Highway Authority

National Highways

Location type

Roundabout Interchange

M25 J19 Chandlers Cross Interchange

Route

M25 and A282

Name

Chandlers Cross Interchange

Highway Authority

National Highways

Location type

Fork

M25 J18 Chorleywood Interchange

Route

M25 and A282

Name

Chorleywood Interchange

Highway Authority

National Highways

Location type

Non-standard interchange

M25 J17 Maple Cross Interchange

Route

M25 and A282

Name

Maple Cross Interchange

Highway Authority

National Highways

Location type

Roundabout Interchange

M25 J16 Denham Interchange

Route

M25 and A282

Name

Denham Interchange

Highway Authority

National Highways

Location type

Partially Unrolled Cloverleaf

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?

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C-Roads

A collection of photos of signs confirming the existence of C-roads.

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