Junction improvement programme - M25 junction 10/A3 Wisley interchange

Update 1 November

Decision deadline extended to May 2022

The Secretary of State for Transport has asked for more time to make a final decision on whether National Highways can continue with their proposals to improve the M25 junction 10/A3 Wisley interchange.

In his statement, the Secretary of State sets out he is extending the deadline to 12 May 2022 to allow for further consideration of environmental matters.

National Highways are committed to delivering the improvements at M25 junction 10 and remain confident that their proposals will deliver much needed additional capacity, with better connectivity for people and business, and safer journeys for everyone. This junction is one of the busiest on their network, with almost 300,000 journeys every day.

Further information regarding the extension and any additional consultations will be posted on the Planning Inspectorate's website.

What's been happening?

National Highways have now started some minor work and surveys that will help them be better prepared for construction, should they get approval in May from the Secretary of State. If they do not get approval, they can return these areas to the same condition they were in before.

The work taking place won't impact you but below is a summary of what it involves:

  • From April, they will be doing some work at Nutberry Fruit Farm to make sure they protect any wildlife on site if work goes ahead. They will also be doing surveys to check the ground for anything of interest to archaeology teams. This site would become their project office, so they will also be putting in place some utility connections like electricity.
  • If the works go ahead, they will use air quality monitors to measure for road traffic pollutant (nitrogen dioxide), dust and particles. They are putting these monitors in place now to start collecting the baseline information to measure themselves against in the future.
  • They will also be digging some small holes to confirm the location of existing utilities, such as gas mains to help inform their plans.

Why and how we are improving the M25 junction 10/A3 Wisley interchange

Junction 10 is the busiest section of the M25, with over 270,000 vehicles travelling through it every day. Due to the volume of traffic and the resulting queues, this area of their network has a very poor safety record and holds one of the highest collision rates across the National Highways network.

Their proposals will reduce delays, smooth traffic flow and create safer journeys for all. A final decision on whether or not the scheme will go ahead is due from the Secretary of State in May 2021.

Keeping you informed

You can find out more about National Highways plans and keep up to date with the project on National Highways dedicated M25 junction 10 webpage. There is also the opportunity for you to sign up to updates via the webpage.

If you have any questions, please contact Highways England either by email on M25j10@nationalhighways.co.uk or call 0300 123 500 and one of the team will be happy to help.