As far from JBS as possible !
Who are you insured with then JOJO as i have two cars and both insurance companies NIC for the Audi and Bennets for my other car increased my following insurance due to the fact i had been in two accidents which niether had been my fault and my 5 years NCB hadn`t been affected. As to the OP pass the letter on to your insurance company and keep a copy for yourself. As Admiral isn`t your insurance company they have no say what so ever as to what/where or anything to do with fixing your car or hiring another one. I have never heard of this sort of thing either?
06 Audi 2.0 PD140 Sport TDI Quattro S-LINE.
Old engine 330 bhp @ flywheel 263 bhp @ wheel 490 lb torque.
Audidriver write up HERE
Now stripped and playing with an uprated Cryo treated engine fitted with bigger turbo,water/methanol,uprated injectors etc etc.Wanting 400 bhp and 500 lb torque.
Other car 500+ bhp MK4 Golf R32 turbo