Its on the outside of a bend of a cul-de-sac square... so its got to be front left wing, but by the way the bodywork is pulled away it looks like something got caught and pulled it open, bull-bars maybe... other than that it could have been a car coming from (in the pic) right to left that met a car coming left to right on the bend, and tried to reverse out of the way.
The square is near a load of all night clubs, so we get a load of private taxi traffic, so its likely it happened overnight and some uninsured or Private Hire London cab is worried about losing business.
Unfortunately its G41 which I think is Ebisu Black and they are moderately rare, regardless I think this is going to have to be an insurance call. Added to the stress its and import so insurance is moderately hard to find anyway.
A bit peeved that my alarm didn't go off, as it was parked right outside my house.