A Sudanese man believed to have travelled to the UK from Calais by clinging to the bottom of a lorry has died after falling between its wheels on the M25.
Two men from the Sudan are believed to have climbed underneath a foreign HGV in the French port at around 11am yesterday and wedged themselves into position, Scotland Yard said.
The pair are believed to have travelled on the bottom of the vehicle on the Eurostar and arrived in England about 40 minutes later.
After the first man managed to get free of the vehicle as it stopped between junctions 24 and 25 of the motorway, police said the second man attempted to do the same but was badly injured as the lorry began to move off.
A member of the public stopped his vehicle and pulled the injured man to the edge of the carriageway, before driving off. A second member of the public stopped his vehicle and offered assistance.
London's Air Ambulance attended but the man was pronounced dead at the scene.
Two men have been arrested on suspicion of causing death by dangerous driving following a pile-up on the M25 motorway.
Four lorries and a Peugeot car were involved in the collision.
The arrested men, aged 33 and 25, are both in hospital and will be interviewed in due course, according to Essex Police.
The vehicles involved were a Peugeot car, a Scania lorry, a DAF artic, a Mercedes lorry and a Romanian lorry. The man who died was pronounced dead at the scene and his body has now been taken to the mortuary at Princess Alexandra Hospital in Harlow.
He is believed to be a 39-year-old man from Leicester.
Four other people remain in hospital receiving treatment for injuries which are not believed to be serious.
The M25 currently remains shut between junctions 25 and 27 while clean up and repair work continue.
Police have now released the scene to the Highways Agency.
The crash is understood to have involved a lorry crossing the central reservation.
At this time we have one confirmed fatality and a number of people who are trapped in their vehicles. There is debris across both sides of the M25 and the motorway will be closed for the foreseeable future while we deal with this collision and begin our investigations to establish what has happened. If it is at all possible motorists are advised to avoid the area and find alternative routes. Nothing will be moving around this portion of the M25 for some considerable time, and the morning rush-hour is likely to be affected.
The M25 in Essex is closed in both directions between J23 (A1) - J27 (M11) clockwise, and J27 (M11) - J25 (Cheshunt) anti clockwise. The carriageway may not fully reopen until 3pm.
Motorists are being told to stay away from the M25 in Essex. Emergency services warn the carriageway could be closed for the rest of the morning and possibly into the afternoon.
Hundreds of drivers are facing long delays today as the M25 in Essex remains closed.
The M25 in Essex is closed in both directions between J23 (A1) - J27 (M11) clockwise, and J27 (M11) - J25 (Cheshunt) anti clockwise due to an incident. Early estimation is that both carriageways are likely to remain closed throughout the morning.
Diversion routes are in place.
Clockwise: road users may exit the M25 at junction 23 and follow the A1 southbound. Then join the A406 North Circular Road towards the M11. Join the M11 northbound, to re-join the M25 at junction 27.
Anti-clockwise: road users may exit the M25 at junction 27 and follow the 'hollow black square' diversion signage via the M11 southbound. A406 westbound and the A10 northbound.
Traffic approaching from Kent and Sussex wishing to travel to the North is advised to use the M25 clockwise.
Traffic approaching from the North (M1, A1, M40 etc) wishing to travel to Kent and Sussex is advised to use the M25 anti-clockwise.