That some bad news.
Happened to me in April and wrote off the car. Admiral were amazing about it, got a very competitive price for the car (more than I could have sold it for!) Sizable compensation for my neck and time off work. I was devastated at first but every turned out just rosy afterwards.
Do claim whiplash mate, it's not out of line you deserve it if you are in any pain or missed work!
Hope everything works out