Looking at the way the front wheel is sitting I am guessing that alot of the front suspension is screwed, this could have also caused damage in a number of places like engine if a brace etc got pushed up into it.
For an insurance company write off a car like that then I would expect to see around £10,000+ worth of damage. Looking at it from vision I would say....
Panels (Skirs/Wings/Bumpers) £1,000
Bracing + brackets £300
Wheel £500
Suspension £2000
Steering £1000 (if it did the rac etc)
THat is not even half of the amount it would need it to be meaning the will be some serious damage hidden away
Intreeged to know what the red thing on the middle of the battery is