My Bro in law is a doctor, and an hour or so into a flight to Asia from London there was a general annoucemetn for a Dr - he was silly enough to respond, and spent the next 5 - 6 hours looking after a seriously ill patient on the floor of a galley after confirming to the Captain that they didnt need to divert (thus saving Virgin tens of thousands of pounds). His "thank you" from Virgin? £100 in tokens to spend on Virgin goods - what cheapskates!