Hello, Mum
Having seen the latest BA re-schduling data, I am now a cooler person. The only difference [apart from very minor timing changes, would seem to be replacing a 744 with a 777. It therefore appears I will not lose c.£5,000 in pre-booked flights/hotel/car rental/pet hotel/transit hotel.
Flapsforty, I apologise again, publicly, for getting over-heated [and posting unwisely] on the CC Thread. Lesson is learned.