The accident happened shortly before 7am on the clockwise carriageway just after junction 1A for the A206 for Dartford. Delays are estimated to be around 90 minutes.

       There are tailbacks of nine miles.

       The collision reportedly involved a lorry and a crane.

       Three lanes were closed following the accident but they have since been reopened.

       The vehicles involved in the crash have been recovered.

       However there are still long delays for motorists.

       A picture taken just after 8.30am showed traffic remains heavy on the motorway.

       READ MORE: M6 traffic latest: 5 miles of motorway congestion after major crash

       It comes after climate protesters caused major delays by blocking five junctions on the M25 during rush hour on Monday morning.

       Dozens of people were arrested following the demonstrations on the UK's busiest motorway to demand Government action on home insulation.

       DON'T MISS

       Madeley skewers M25 eco-activist protester 'Risk that child's life!?' [VIDEO]

       Why traffic jams that seemingly come out of nowhere are our fault [ANALYSIS]

       M62 traffic latest: Huge delays as PIGS break onto motorway [INSIGHT]

       The group Insulate Britain - an offshoot of Extinction Rebellion - staged sit down protests at Junction 3 for Swanley in Kent, Junction 6 for Godstone in Surrey, Junction 14 for Heathrow Terminal 5, Junction 20 for Kings Langley in Hertfordshire, and Junction 31 for Purfleet in Essex.

       At least one driver attempted to drag a protester off the road.

       The protest began at about 8am on Monday and took up to noon to be cleared.