M25 junction 10
Restoring heathland and upgrading the junction with the A3 Wisley Interchange to reduce congestion, improve safety and create more reliable journeys.
- Our overnight closures are usually between 9pm and 6am.
- The A245 has one lane closed westbound between Painshill and Seven Hills Road.
- For information on footpath and bridleway closures, visit our pedestrian, cycling and horse-riding factsheet.
- For closure information across our network, visit our travel updates webpage.
Monday 2 October to Monday 4 December
SGN are carrying out essential work to reposition and reinforce the gas main infrastructure under the Ockham Park roundabout near Ripley. This is not part of the M25 junction 10 improvements scheme.
For more information, please visit the SGN website
Monday 27 November to Friday 1 December
The A245 will be closed westbound between the Painshill roundabout, and the junction of Seven Hills Road will be closed overnight between 8pm and 5.30am each night.
Diversion via Seven Hills Road, A317, A244 through Esher to Claremont Lane then Copsem Lane to A3 at Esher bypass.
About our diversion routes
Our diversion routes are designed to suit all vehicle types.
We advise you do not use a Satnav when following our diversion because it could direct you down an unsuitable road or back onto our network when it is closed.
Junction 10 is the busiest section of the M25 with over 300,000 vehicles passing through every day.
Our improvements will reduce congestion, create a smoother flow of traffic and provide safer journeys for thousands every day.
Our scheme will see:
- New and safer routes for cyclists, pedestrians and horse-riders
- An additional lane on the A3 in both directions from Ockham and Painshill junctions towards the M25
- A larger roundabout with extra lanes to increase capacity
- Free flow left turns at all four corners of the junction
- Improvements to the A245 Seven Hills junction and Painshill roundabout
- Safer access to Old Lane, Elm Lane, Heyswood campsite and San Domenico
- Improvements to the local environment and wildlife
Our scheme will
- Improve safety and journey times
- Reduce congestion
- Smooth the flow of traffic
- Increased capacity
- Provide better connections
- Improve access for cyclists, pedestrians and horse-riders
- Support local and national economic growth
Heathland is one of the UK’s most threatened environments and is a vital habitat for a range of invertebrates, reptiles, and bird species.
We’re restoring large areas of heathland at Wisley and Ockham commons. This long-term process starts with the removal of trees, which might seem concerning at first, but it is the first step to getting it back to its natural state.
Learn more about our tree removal works and why they are needed
Our scheme involves some of the most extensive environmental mitigation ever carried out by National Highways.
More than 16 hectares of land will be used to replace common land and public open space that is needed to improve the junction.
We’re also enhancing other areas of woodland using selective clearance. This involves thinning out conifers to improve the abundance of broadleaf, structurally complex woodland that is more in keeping with the historic landscape and home to a wide range of species.
This work will encourage regrowth and increase the variation of height and age of trees. New areas of native tree and shrub species, which are best suited to the conditions here, will also be planted along and around the roads.
We’ll make sure we leave a lasting environmental legacy that will benefit Ockham and Wisley Common for years to come.
Find out more in our information portal or take a look at our factsheets below.
Our factsheets contain more information about what we’re doing to improve journeys and protect the local environment.
- Heathland restoration and the environment
- A245 improvements
- Water environment
- Pedestrians, cyclists and horse riders – includes closure information
Frequently asked questions
Visit our M25 junction 10/A3 Wisley interchange feedback tool to have your say. The tool includes an interactive map. You can click on a location to make a specific comment, or give us your general feedback.
ECHO is a one-way feedback tool, so if you’d like a response to your feedback you should email the project team at: M25j10@nationalhighways.co.uk
Consultation documents 2020
Consultation documents 2019
Consultation documents 2018
- Consultation Brochure
- Print Questionnaire
- Preliminary Environmental Information Report - Non-technical Summary
- Preliminary Environmental Information Report - Volume 1 Main Report
- Preliminary Environmental Information Report - Volume 2 Appendices
- Preliminary Environmental Information Report - Volume 3 Figures Part 1
- Preliminary Environmental Information Report - Volume 3 Figures Part 2
- Statutory Notices
- Statement of Community Consultation
- Statement of Community Consultation errata
- M25 junction 10-A3 Wisley North West of junction 10 map
- M25 junction 10-A3 Wisley - Scheme Layout Plan
- M25 Junction 10-A3 Wisley - South-West of junction 10 map
- M25 Junction 10-A3 Wisley - South-East of junction 10 map
- M25 Junction 10-A3 Wisley - Scheme Overview
- Targeted non-statutory consultation brochure
Consultation documents 2017
The Development Consent Order (DCO) process was established by the Planning Act 2008 and is used for certain large and complex schemes that have been designated as a Nationally Significant Infrastructure Project (NSIP) by the Government.
The Secretary of State for Transport granted the Development Consent Order (DCO) for the M25 junction 10/A3 Wisley interchange improvements on 12 May 2022.
Links to key DCO documentation can be found below:
- Examining Authority’s report and recommendations to the Secretary of State for Transport
- Secretary of State for Transport’s decision letter and statement of reasons
- Development Consent Order as made by the Secretary of State for Transport
You can view our full Development Consent Order application on the Planning Inspectorate website.
Current scheme plans and documents are listed at Article 45 in Schedule 11.
Development Consent Order – Requirements Register
Requirements are planning conditions included in the DCO that relate to all or part of the works. They each require documents to be prepared, consulted upon by defined organisations and submitted to the Secretary of State for approval. These processes are referred to here and in the DCO as “discharging” the requirements.
This Requirements Register is a live document and will be updated as the process to discharge the requirements progresses.
The latest version will always be published below:
This register will be maintained for three years following completion of the project. The register sets out:
- each requirement
- whether the requirement needs approval by the Secretary of State (or other duty holder)
- whether any approval has been applied for or given
- Requirement 3 – Construction environmental management plan
- Requirement 4 – Traffic management during construction
- Requirement 6 – Landscaping
- Requirement 7 – Design, layout and implementation of Replacement Land
- Requirement 8 – Thames Basin Heaths Special Protection Area (SPA) Compensatory Habitat Creation and Enhancement Areas
- Requirement 9 – Cockcrow Green Bridge
- Requirement 10 – Bolder Mere
- Requirement 12 – Stratford Brook
- Requirement 13 – Department for Transport Sign Off
- Requirement 13 – Ground Investigation Report
- Requirement 13 – Ground Investigation Report - Addendum
- Requirement 13 – Piling Risk Assessment
- Requirement 14 – Archaeology
Common Land Application Notice – Annex A
Wisley & Ockham Common – between RHS Gardens Wisley and Wisley Airfield
Wisley & Ockham Common – northeast of RHS Gardens Wisley
Wisley & Ockham Common – around Ockham Bites Café
Wisley & Ockham Common & Chatley Heath – around Wisley Interchange
Wisley & Ockham Common – southwest of Painshill Park
Wisley & Ockham Common – east of Deers Farm Close
Wisley & Ockham Common – west of Wisley Interchange
Chatley Heath – southeast of Wisley Interchange