On a Portland to Heathrow T5 flight, my daughter's cabin bag was moved and placed in an overhead locker further along the aisle by BA crew. After landing, when she managed to get along the aisle, to where crew told her it had been placed, it had gone. Crew didn't help her check other areas, and said she had to leave aircraft and just ask if it had been handed in at the carousel. Nothing. Spent a further 2 hours waiting at lost luggage. Anyone have any experience of passengers 'mistakenly taking' cabin bags and then returning them? Any advice on how BA can help facilitate this if the luggage is no longer on site? Does it just rely on the effort of the passenger, if they've taken it home and then realised case not theirs? As a newbie, I'd be grateful for any advice. Thank you.