Quite a regular thing for shuttle flights to be operated by 767/777s, once caught a 777 back to GLA simply cos the 757 was in a service.
Remember way back in the eighties seeing the shuttle arrive at GLA in the shape of Concorde a few times… THAT would have been a pleasant surprise for the pax!!

Yes strange but true, I too remember the the Manchester – London scheduled shuttle being operated by Concorde on a few occasions.