Well guys, I don't know whether the letter to Keith Williams demanding "action within 7 days or else" had any effect.
But today the Much Beloved had a phone call from BA in which they admitted responsibility for the fiasco. Apparently after the GLA - LCY flight was cancelled, BA listed her as being on a different alternative flight from Glasgow to Heathrow than the one on which they actually put her. Then listed her as a no show for it!
MB reckons that the BA rep actually sounded embarassed about it and was also unhappy about the people in Gibraltar.
BA says MB to send them copies of bills etc. We'll see how it goes from here re expenses and compensation, but it's a start!
