Just been down the dealer to inspect the damage for myself
£2500 to repair.. merry f'in christmas!
Thats a lot of cash to outlay against a £7k car, didn't you get any warranty when you bought and if so does it cover the part in question.
Also what part is it you need, i can look on the national db at work and see how much they cost 2nd hand, maybe find someone near you selling one, and btw i wouldn't be taking it to a main dealer for repair work or even servicing unless you want to pay through the teeth, there are plenty of good specialists around and likely to be a lot cheaper.
I know a lot of run of the mill garages round here charge £50+vat/hour for work, i found a local lad who does work for £25inc/hour and he is far better than most places i have used and generally is on the ball with most stuff.