I don't mean to be the bringer of doom, but lets face it;
The book value for our cars is like £3000 or less, insurance companies are very reluctant to authorise repairs that come to more than 20%-30% on them, which means £600?
Bearing in mind that anything that involves a paint job is more or less a write off - front end can be got away with because it's a simple case of replacing a panel, but rear end involves good old panel beating & prep, which takes time and costs money
I'd love to be wrong, but insurance companies are more than willing to take your money, and kick up a fuss when they have to pay out