Chris, that's soul-destroying - my sincere condolences... words fail me!
I guess you have to take small comfort from the fact that no-one got hurt or worse and a new project will find you.
Sadly I find myself agreeing with your granny.... she clearly knew her cruisers.
Did the fire spread to the whole interior or is the damage in the front from the engine-bay fire and melting dash?
It looks like the roof-rack is intact and I guess the rear axle and fuel tank are ok. Presume the ali diff-lock actuator on the front axle is gone, so the front axle might not be in great shape...
Dunno how the pay-out will be affected if you start trying to reclaim parts - might be best to keep the removables (RR, sliders, winchbar etc) and let them take the carcass away in return for some £££ (hopefully LOTS!).
What a f**king waste!
All the best! I'm sure we can all club together to sponsor you a tipple or 17 at Lincomb!
Cheers,