News & Features

A3 Junction 10 Overnight Closures: Week Commencing 27 July 2026 

Posted in News on Friday, July 24th, 2026

If you're planning to travel on the A3 or around Junction 10 next week, it's worth checking your route before you set off. National Highways has announced a series of overnight closures as work continues on the M25 Junction 10 improvement scheme. 

The closures will take place between Monday 27 July and Friday 31 July 2026, with signed diversion routes in place for all affected traffic. Please note that while closure times have been published, they may vary depending on traffic levels and when it is safe to close the road. 
Planned overnight closures 

Monday 27 July to Wednesday 29 July (10pm–5.30am) 

The northbound A3 entry slip road at Junction 10 will be closed for three consecutive nights. 
Traffic will be diverted via the northbound A3 to Painshill, before returning on the A3 southbound. 

Thursday 30 July (10pm–5.30am) 

The southbound A3 entry slip road at Junction 10 will be closed overnight. 
A diversion will be in place via the southbound A3 to Ockham, allowing drivers to return on the A3 northbound. 

Friday 31 July (11pm–6am) 

The northbound A3 at Wisley (Junction 10) will be closed overnight. 
Drivers will be diverted off the A3 at Junction 10 before rejoining via the northbound entry slip. 

Southbound A3 closures at Wisley (Junction 10) 

Thursday 30 July (10pm–5.30am) and Friday 31 July (11pm–6am) 

The southbound A3 will be closed overnight at Wisley, with traffic diverted via the southbound exit and entry slips at Junction 10. 

National Highways has apologised for any inconvenience these closures may cause and encourages motorists to allow extra time for their journeys where necessary. 

For the latest updates on the M25 Junction 10 improvement scheme, visit the National Highways project page or follow National Highways South East on social media. If you have any questions about the closures or ongoing works, you can contact the National Highways Customer Contact Centre on 0300 123 5000 or email info@nationalhighways.co.uk. 

Comments (0)