Originally Posted by
Andy33
Assuming your relatives have separate tickets for the flight arriving in T2 and the flight departing T5, and can't persuade the airline operating the arriving flight to through-check the luggage on to BA, then yes.
...Other airlines that use T2 may have more flexible policies, but you'd need to ask them.
Thanks, Andy33.
They'll arrive at T2 on Icelandair, then will have a BA flight a few hours later, from T5, to Dublin.
I'll check with Icelandair to see if they have a baggage agreement with BA (to send the bags from the Icelandair flight to the BA flight), but in the meantime if anyone knows if there is such an agreement in place, please let me know.