Think there are two separate incidents here.

Early on Sunday morning an M&S lorry coming up Stanstead Road from Catford towards Forest Hill was in collision with a car which was coming from Brockley Rise. According to the bloke in the newsagents (always a reliable source of info) the car had run a red light and the lorry couldn't avoid it.

In any case, there was something of a mess and the whole junction was closed off while the cops and TfL cleaned up. By the time I went through at about 10:45 the cleanup was more or less complete.

Sounds like there was some separate police activity on Monday. I'll leave it for someone else to shed some light on that.