Three of the M25’s four lanes are closed on the anti-clockwise carriageway between junctions 11 and 12 after a serious multi-vehicle crash this morning, with severe delays building on the motorway.
Lanes 2, 3 and 4 were initially shut between the two junctions, near Chertsey in Surrey, following the crash. Lane 2 has since reopened, but lanes 3 and 4 remain closed.
The crash was reported on Wednesday morning, 11 November, and the lane closures were confirmed shortly afterwards. Surrey Police has confirmed the crash happened at around 7am and involved multiple vehicles. One person has been taken to hospital for treatment, and police have asked people to avoid the area where possible. South East Coast Ambulance Service said its crews, including a critical care paramedic, treated a male patient for a leg injury at the scene before taking him to St George’s Hospital in London.
Reports suggest a lorry and several vans were involved, but police have not yet confirmed the vehicles involved. The cause of the crash has not been confirmed either.
Delays on the stretch are now estimated at around 90 minutes. Motorists travelling on the M25 are advised to check conditions before setting off and to allow extra time for their journeys while the closures remain in place.
We are following developments as they happen in our live blog below.
This is a developing story. Updates will be added as more information becomes available.
It is the second major disruption on London’s transport network this morning, after Elizabeth line services were suspended following a casualty on the tracks.
The M25 has seen several serious incidents in recent days. A van crash between junctions 7 and 8 near Reigate and Godstone caused long queues on Monday morning, while overnight closures for planned roadworks have been running across the motorway this week.
National Highways has also announced overnight lane closures at Swanley Interchange, at the M25 junction in Kent, from next week as part of improvement works there.
Updated: 11 November 2026 at 10.09am.
