Biker down - A1203

Driving along the A1203 last night(18:00) towards the limehouse link tunnel, there was a biker lying on the ground by the BP station just before Cannon street road. There was no sign of his bike but there was some bits of what looked like a rear light in the road. I suspect someone moved the bike as it would have blocked both lanes of traffic. He seemed to be alright and talking to people when I was going past. The ambulance was just arriving as I got there. Anyone on here, hear anything, hopefully the guy is alright. I didn’t see the incident but given his road position I would guess that he was filtering in the broken chevrons and someone either went to turn into the station or came out off it and hit him.