To everyone who has contributed - my thanks to you all.
As I explained, I have yet to receive a reply from the airline concerned, but I will keep you informed.
Perhaps, in hindsight, I should have been a little more forthright during the boarding, and if it happens again, I may well point it out to the CA.
My thanks for your time and for taking the trouble to respond.
Best wishes and a Merry Christmas to you all.
Kind regards
The Swinging Monkey