Sorry to see that Commander but glad you & the Mrs are unhurt as that's the main thing.
If it's going through the insurance company then I wouldn't worry about how much it's going to cost, ...trust me though it will be a lot more than the £600 your paying for your excess. I'd guess similar to Erni & G with it being at least £1000 if not upwards of £2000 depending on the bodyshop.
Hopefully all with go smoothly with the insurance company. Good luck.