Originally Posted by
13901
Everything that has been said in the previous posts is correct, but I don't think that an inbound flight from DUB will need to clear security again, doesn't it? I think it's considered a UK&I arrival, with no security checks for transfers and direct access to the departure lounge.
All Ireland inbound flights have to clear security before onward connections, for the time being, hence the arrangements at gate 23. There are moves afoot to change that, but it's probably 3 years off. If the travellers were coming from Belfast or any other domestic location arriving into T5 then there is no security check in LHR for a T5 departure.