Davef68,
Thanks, that could be it - it could have been the 10s, but my time holding at Abingdon pre-dated the shuttle trips to Filton. The incident of the crew's food poisoning and multiple flame outs from Bombay was almost funny to read, I imagine this unsettled a few passengers..
Prompted by a shout from the captain, purser Harry Everitt rushed to the toilet and hammered on the door for the FE to return to the flight deck.