A stretch of the M25 is blocked in Surrey after a multi-vehicle crash, moments after two lorries smashed on the M4.
Heavy rain and thunder sweeping over London and the south have turned motorways into mayhem today after multiple crashes.
Traffic has stopped on the M25 clockwise after a multi-vehicle crash between J8 Reigate and J9 Leatherhead, with the emergency services on the scene.
Motorists face hour-long delays and around four miles of congestion, National Highways said.
Elsewhere, traffic came to a standstill on the M4 westbound after two HGVs crashed on the busy motorway near Slough, Berkshire.
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Three out of four lanes are closed westbound between junctions J7 (Slough) and J8 (Maidenhead) after the smash at about 11am.
Drivers face around 30-minute delays and three miles of congestion.
Emergency services are on the scene, National Highways said.
National Highways said: ‘Lanes 1,2 and 3 are now CLOSED on the M4 westbound between J7 Slough and J8 Maidenhead for recovery and clear up works following a multi vehicle collision involving two lorries. Lane 4 is now open. Delays of 30 mins with approx. 3 miles of congestion.’
Access from the slip road from Slough at J7 onto the M4 is also blocked.
Traffic faces long delays in the area, with westbound queues building up towards the M25 and Heathrow.
Drivers took to social media to warn others to ‘reroute if you can.’
One motorist said: ‘Massive crash two lorries westbound on M4 passed junction 7. Road closed and will be for a while I would think. Fire engines there but not ambulances yet. Just saw as I’m heading towards Heathrow on the coach in the opposite direction. May want to re-route if you can.’
Traffic analyst Inrix said the incident has also caused oil spillage and access from J7 is blocked due to congestion.
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