M25 crash LIVE: 'Serious collision' sparks motorway closure as police issue Heathrow and Gatwick travel warning

The crash has sparked long tailbacks on the M25 National Highways Megan Howe , News Reporter | Michael Howie , Senior News Editor 1 minute ago A section of the M25 is closed anti-clockwise after a serious crash, sparking a warning from police for drivers heading to Heathrow and Gatwick airports.

The anti-clockwise lanes are closed between J11 near Ottershaw and J10 near Cobham following the crash around 11.55pm on Monday.

National Highways said: "The incident scene is now being cleared but this is likely to take several hours and the closure will remain through the morning peak travel period.

"Therefore, please expect long delays on approach to to J11 and also on local routes in the area this morning."

Surrey Police said: "If travelling to Heathrow and Gatwick airport, please check your travel time before you depart as your journey is likely to be impacted.

"The road will be closed for a number of hours to allow a thorough investigation to take place. We will provide an update once the motorway reopens."

According to travel site Inrix, congestion is stretching back to Junction 13 (Staines).

Congestion is stretching to Junction 13 in Staines Inrix What is the clearance time for the collision? Police investigations have finished, but delays are expected to last throughout this morning.

Heavy congestion is building along the diversion routes, particularly through Byfleet and onto the A3 at Cobham, it has been reported.

“Surrey Police investigations were carried out overnight and completed at approximately 0600,” National Highways says.

“The incident scene is now being cleared but this is likely to take several hours and the closure will remain through the morning peak travel period.

“Therefore, please expect long delays on approach to to J11 and also on local routes in the area this morning.”

National Highways has advised drivers caught up in the M25 delays to follow the diversion route via Hollow Square.

National Highways said police have completed their investigations, but motorists have been urged to avoid the motorway this morning due to the traffic backlog.