JSL
Whilst I understand that, and appreciate your point of view, some airlines, including BA, just lie if they think they can get away with it. I was once kept for over 6 hours on a BA plane that was eventually delayed for 24 hours. As I was sitting right next to the open door, I heard the BAA person tell the CSD that whilst there was no reason not to let us off, ............"it would be inconvenient to let them in to the terminal right now...........".
That is not what the CSD announced. I wonder why?