Originally Posted by
Aviatrix
Why should they have done that?
Their carry-on baggage will have cleared Customs at DUB (on arrival in the EU).
If they used the flight connection option at DUB, they would just reclear security not customs.
On landing at LHR they will, presumably, have ended up in a common baggage reclaim area after bypassing Immigration (I've never flown into LHR on a domestic or CTA flight, but that's how domestic/CTA arrivals are handled at other UK airports). If my assumption is correct then they should simply have picked up their bags and gone through the green channel.
Coming out of the "Green Mile" area at T1 there are no customs channels - just an exit, hence why the little phone is there I suspect
They aren't common baggage belts but dedicated domestic and Ireland ones completely seep rate from the International arrivals area (which is on a different level in the main part of T1).