M25 junction 10 A3 slip road closures announced for September as next phase of works continue

The M25 junction 10 is set experience overnight closure on it slip roads from Monday, September 9 and Thursday September 12 between 10pm and 5.30am. The closure will mean drivers will not be able to join the M25 from the A3 or vice versa.

A National Highways spokesperson said: “During the closures you will only be able to drive through the junction and you won’t be able to leave or join either the A3 or the M25 as you normally would.”

Diversions will be in place with full details of the routes listed on the National Highways website.

The closures are part of the project to transform the junction and the surrounding areas, with junction 10 being one of the busiest areas on the M25. The project has already seen multiple full weekend closures this year with the next weeks closures set to be less impactful.

More closures are expected between now and the completion of the project which is forecast for the summer of 2025.