The M25 network covers over 440km and includes: 5 tunnels, 2,500 structures including bridges, culverts and overhead gantries, and 140,000 other highways assets. It carries 15% of all UK motorway traffic and, at its busiest section, is used by over 250,000 vehicles a day.

We've successfully maintained our accreditation for ISO 44001, for Collaborative Business Relationship Management with our M25 Community for the ninth year.

We've invested over £400m in all major asset renewals since 2009.

There are 2,500 structures on the M25 network including bridges, culverts and overhead gantries

Improving the driving experience for all road users using innovative methods and materials