Road Closures/works: Junction 10 M25/A3 w/c Monday 23 February

Published: 20 February 2026

Overnight closures:

On Monday, Wednesday and Thursday from 10pm to 5.30am and on Friday from 11pm to 6am, the M25 junction 10 gyratory will be closed. This closure will include the anticlockwise exit slip and clockwise entry slip at junction 10.

The free flowing lane from the A3 southbound to the M25 anticlockwise will remain open.
The free flowing lane from the M25 clockwise to the A3 southbound will remain open.

Diversion routes:

Northbound A3 main diversion: via B2215, south on the A247, east on the A246, north on the A24, north on the A243, join the westbound (clockwise) M25 at junction 9, north on the A243, west on the A309, south on the A307, west on the A245 to rejoin the northbound A3 at the Painshill junction.

Northbound A3 non-motorway diversion: via B2215, south on the A247, east on the A246, north on the A24, north on the A243, west on the A309, south on the A307, west on the A245 to rejoin the northbound A3 at the Painshill junction.
A3 Southbound to M25A Clockwise: via M25B Anticlockwise to J9 and return to M25A Clockwise.
M25A Clockwise to A3 South: via M25 J9, and return to M25A Clockwise and Exit at J10.