Well, not been here for a while so bit of an update.
As per above post, Cobra sorted my seats and they're now as good as new. However, on the way there, someone crunched into the back of my car at a set of lights! He admitted liability to his insurers so all good...or so we would have thought.
Repair estimate, for the worst case scenario e.g. potential hidden damage was into 5 figures and the 3rd party insurers were nothing but a bunch of skanks. Denying having received the estimate and photos (even though a read receipt was sent back). Early Jan I spoke to them and mailed them highlighting the lies they'd been coming out with and gave them 7 days to get repairs underway. Lo and behold, 2hrs later all was approved!
Anyhow, the car is down with the specialist who looks after it, he got it ready and sent it to the bodyshop in Bristol that he uses, hopefully will be out of there within 2 weeks and back to him and maybe I'll have it back by mid-March. Whilst he has it there are a few alterations being carried out to the back end.
Damage ended up being ... New tailgate reqd, new rear beam reqd, n/s composite cracked, rear quarter panels bonding broken, exhaust bent so needs repairing, new wrap reqd from A pillar back and no doubt quite a few other small bits.