We would like to advise visitors that the M25 will be closed over expoEM weekend between junctions 9 to 10 both directions.
See link below for National Highways website:-

This is for bridge works at junction 10. ‘This work will take place during a full weekend closure between junctions 9 (A243 Leatherhead) and 10 (A3 Wisley) from 9pm Friday 10 May to 6am Monday 13 May 2024.’