Was booked on the BA1486 to GLA tonight, which was changed a few days ago onto the Titan 767. The Titan 767 went tech, with an announcement to that effect at 18:35. At 19:25 gate staff announced the flight was cancelled.
By the time I got to ticketing queue was pretty big, but moving quickly.
Re-booked onto the BA1496 at 21:40 by 19:55 & given a £5 towards something to eat.

Pretty well handled by BA under the circumstances. Those further up the re-booking queue got on the 21:05 GLA flight.