Apparently an aircraft broke down on the runway at the time our aircraft was due to cross the runway from BA's routine maintenance sector, and the pilot had to wait over an hour for a further slot to cross over to the stand for our flight - and what a jolly egg he turned out to be!!

What was confusing on the flight indicator board was that it showed "delayed to 12:20", but not that this referred to the time when boarding gate would be known. This turned out to be gate 5 at Gatwick South Terminal, which was a pretty long walk for my disabled wife! Still they agreed Assisted Boarding, so we were second on the aircraft.