I took my test over 20 years ago, but I'm sure that I was told to wait if a car in front is doing a manoeuvre.
Today I was reverse parking on my narrow street and someone decided to drive round me whilst I was swinging out to straighten up. They came so close to my car, we were within cm's of having an accident. They were speeding past me, and weren't there when I started to park so I assuming they were pelting it down the road.
If they had hit me, who would be at fault?