Why this is a London problem specifically
Parking in most of inner London is controlled, permitted or both. An undriveable vehicle in a resident bay is still subject to the rules of that bay, and a vehicle left where it should not be can attract penalties, and in some cases removal, while you are still waiting for an insurer to call you back.
Even where you have somewhere to put it, a damaged vehicle outside your home for several weeks is an invitation — for further damage, for parts to disappear, and for weather to get into whatever the impact opened up.
