TOFO: Not sure XV257 really counts as a hull loss due to fire... she flew after her St Mawgan escapade! At least not without a bit of a stretch, reasoning that if the fire hadn't happened, she wouldn't have been selected for conversion to AEW3 (conveniently being fully repaired in the process) and hence wouldn't have been in the hangar at Woodford when the roof collapsed on her... which did finally cause hull loss!