If all the reports we have received so far are accurate, that;
- the aircraft diverted from the Regina area to YVR without declaring an emergency;
- the entire cabin crew departed the aircraft upon arrival;
- leaving all the PAX on the aircraft; and
- neither BA nor any other authority have issued any kind of explanation why this occurred ...
Then I can only conclude that this was a deliberate action by the cabin crew in some kind of a labour dispute.