I have decided not to park amongst cars from now on.
Last week, I parked my bike outside a shop, at an angle with my rear wheel towards the kerb, between two parallel parked cars. While I was in the shop, a car reversed into my bike and knocked it over. According to a bystander, they hopped out of their car, had a quick look and then drove off leaving my bike on it's side pouring petrol onto the road. The bystander very kindly picked up the bike and put it back on it's stand. The damage included, very bent front brake lever, scratched master cylinder, bent handlebars and scraped silencer.
This was of course very annoying but luckily no one was hurt. People at the scene who witnessed what happened did not manage to get the registration number so I have no way of finding out who it was. It has left me feeling quite sad.
Anyway, I have repaired everything now apart from the handlebars which seem very hard to find these days.
The point of mentioning here is as a precaution. I think I shall just have to park somewhere where it is less likely to be bumped into, for example taking up a car parking space in the car park. Motorcycle spaces are very limited around here and there isn't one in my nearest village.