until you know what the price of the car is worth to you , try to find out from a car buyer guide / or a garage , ask them what the damages was, get a rough idea, from that , plus your expenses, e.g. taking a bus/ trains/ tubes/ etc etc. as long as you have the tickets and the passes , you can also claim for that as well. and you can also buy the car back from them as well at reasonable price if you think you can get it fixed as long as it is road worth to run and there is not much damage and the cost if you think it is going to be very expensive than don't but it just take the money as much as possible ,cause you've paid your insurance over the years and you haven't made any claim ,
So go for it take them to the cl earners as much as possible.
Good luck and safe driving