Might help someone, judging by the number of blue lights I think it’s a badun. Anti-clock between j6&j5
Its between an asda lorry and a coach dont know if any injurys .
Google Maps - Traffic
(choose live traffic update on top right)
Showing still blocked at 0815
I got through about 04:30, no idea what happened though- asda artic had it’s unit across the front of the coach and it’s trailer down the bus’s nearside, I think they were in lanes 2&3.
Think the emergency services were expecting a catastrophe with it involving a coach; 4fire engines, 4amb’s and at least 6 police!
six people were traped.
Given it involved an Asda truck couldn’t they have just done a Rollback? 
Hope all are ok