M25

M25 Holmesdale Tunnel Refurbishment 26 October 2008

Properly called the M25 Holmesdale Tunnel Refurbishment and Junction 25 Improvements. The works will provide a third lane eastbound through junction 25 (previous works provided the third lane westbound), and widen the adjacent Holmesdale Tunnel to dual four lane. It will also provide essential refurbishment work on the electrical and mechanical equipment within the tunnel.

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M25 Widening J12-15 26 October 2008

Widening of the M25 between junctions 12 and 15 to dual-five lane, and provision of a new spur road to Heathrow Airport between junctions 14 and 15, connected to the M25 via a new free-flow junction. Six lanes each way will be provided between junctions 14 and 15.

As of April 2004, the Highways Agency has announced its intention to widen the rest of the M25 to at least dual four lane carriageways, except junctions 3 to 5.

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