A12 Biker down

Looked bad, air ambulance on the road, couldn’t tell what bike it was - could only see the engine.
Really hope the rider was ok.
Lanes closed west bound into London not too far from the tunnel entrance.
Rode past about 6:15, so don’t know if it’s still closed now.

I went past at 6 ish, they had closed the northbound as well as the southbound (where the accident was), the helicopter was landing as I got there.