The story I heard about Johnny 'Full Tanks' Welford (no idea where that nickname came from) was that there had been a management complaint that he was not doing enough in his in-flight PAs to entertain the pax. On his next flight he appeared from the flight deck into the cabin, wearing a Hawaiian shirt and a guitar, and sang to the pax. I heard this at White Waltham; perhaps he had been a member there.