M25 junction 10/A3 Wisley interchange 2018

Closed 26 Mar 2018

Opened 12 Feb 2018


We are consulting on our proposals to improve the M25 junction 10/A3 Wisley interchange held in accordance with the Planning Act 2008 in advance of an application for a Development Consent Order (DCO) to authorise construction of the project.

The need for the scheme

The M25 junction 10/A3 Wisley interchange has been identified for improvements as it experiences heavy congestion on a daily basis.

This junction also has a poor safety record that needs to be addressed. Highways England accident data shows M25 junction 10 was found to have the highest number of casualties at any junction on the Strategic Road Network, and more than double the average number of casualties at M25 junctions.

In summary the key scheme objectives are to:

  • improve journey time reliability and reduce delay
  •  improve safety and reduce both collision frequency and severity
  • improve crossing facilities for pedestrians, cyclists and horse riders and incorporate safe, convenient, accessible and attractive routes
  • Minimise impacts on the surrounding local road network
  • support projected population and economic growth in the area.

Between December 2016 and February 2017, we consulted on two main options for improving the interchange.

A preferred route announcement was made on 29 November 2017. This included proposals for replacement side road and access arrangements, which were necessary to address safety concerns and were developed following discussions with affected stakeholders and residents.

We would like to hear your views. Have your say by completing the online survey below.

Consultation events

Location Date and time
East Horsley Village Hall, Kingston Avenue, East Horsley, KT24 6QT Friday 16th February 14:00 to 19:30
Saturday 17th February 10:00 to 17:00
Cobham Hilton, Seven Hills Road, Cobham, KT11 1EW Friday 23rd February 12:00 to 19:30
Saturday 24th February 10:00 to 17:00
Cobham Village Hall, Lushington Drive, Cobham,
KT11 2LU
Friday 2nd March 14:00 to 19:30
Saturday 3rd March 10:00 to 17:00
Ripley Village Hall, High Street, GU23 6AF Friday 9th March 15:30 to 20:00
Saturday 10th March 10:00 to 17:00
Cobham Services, M25 Friday 16th March 08:00 to 20:00
Friday 23rd March 08:00 to 20:00


Please note: A revised version of the M25 junction 10 /A3 Wisley Interchange improvement consultation brochure has been uploaded to this webpage. If you downloaded the previous version please note that the following updates have been made:

  • Updated Scheme Plan (pages 4 and 5)
  • Date changed from 2016 to 2018 (page 11)
  • Change title to map on pages 14 to 15 to 'Key Plan for maps 1 to 4'
  • Updated maps, pages 16 to 23

We regret any confusion that may be caused as a result of these changes.


  • All members of the public


  • Roads