Jumping in on this. I’ve an upcoming trip I need to book, due to a weird quirk of scheduling I’ll be doing MIA to LHR then overnight in London for an event before travelling to ARN the next morning. It’s obviously a lot cheaper to book this as a ARN return, and because of the timings I am in London for just under 24 hours, so it doesn’t trigger APD.

However, I travel with 5 cases for the event I’ll be at during my overnight in London. I can’t be without them, so need to get them at LHR. I’m reluctant to have to buy this as two different tickets, will BA short check to London with an overnight?