My husband and I will be flying into Heathrow (out of Seattle) British Airways, terminal 5. We have an hour and a half until our next flight to Hamburg (terminal 5, British Airways). Must we collect our luggage and go through customs/immigration there, or do we wait until we're at Hamburg? Only reason I'm asking is because we're at the very back of the 747, and I'll be pushing my husband in his wheelchair/walker - so we might be a bit slower than the norm.
Thanks so much in advance.