Thanks everyone. I am currently in HKG and need to get back soon. I have no stop overs left in Europe/ME but have 3 segments left. I am trying to visit London and perhaps not make it for the last flight to the ME destination.

Q: I have a six hour layover in London before connecting to another BA fight. Would they let me book my luggage just to London - I could be meeting a friend etc. OR would they make me book it all the way to the final stop?

Having travelled most of the way with hand baggage. I stupidly acquired luggage that's too big for carry one. Not huge but too big.
Thanks