I've seen a London Buses incident vehicle, which is stopping traffic at Manor Mount and sending any cars down there as a diversion (with police support). There is a big white truck and guys working with chainsaws in the direction of the P4 bus stop. My guess, a tree has fallen in the road and they're having to chop it up to move it and London Buses are involved because it's a route. I didn't see an ambulance though there are more flashing lights beyond my view (in the direction of Tesco) so there might have been one there.