I had a write off on a d1 3.9 lpg similar damage but also bonnet and wing. It cost me 950, they paid 1500 less 350 excess. They pay book value, not what you tell them it is worth.
A few years ago I had a Honda VFR 750, 6 weeks old and it was knicked and trashed. Initially I was offered £6500 as a full payout, but I refused and was able to prove that, at that time, a 6 week old VFR was worth £7500 so after a number telephone calls I accepted a pay-out of £7300.