Pft, if someone tapped the back of my car and hurt my neck, whilst causing no damage to my car, I wouldnt even think about suing, as long as the person who tapped my car was extremely apologetic and took the blame for it. I am able to understand that accidents happen, and I'm not going to just grab for money the very second someone slips up.
Peoples attitudes are hilarious nowadays. How will £200 make my neck better? It'll heal by itself over time, simple as that.
Another hilarious example is claiming for "damage to feelings". Hilarious! If someone thinks I'm an ugly bastard, they can feel free to say it.
Basically, if the person was a respectable person at all, they wouldnt be claiming. Theyre trying to get as much money out of you as they possibly can. Do NOT feel "sorry" for them. The only thing you should feel sorry for is the fact that they didnt die horribly in the accident. (Hah, I'm so controversial.)