Have only had a few occasions when IRIS has been U/S at either LGW or LHR - but definitely not allowed to jump the regular queue if this happens (despite being told this on registration). For me the most difficult part of registration was finding the office when it was open - not usually when commuter flights leave before 0800!
Had smooth experience @ T1 last week coming back from HEL - straight off from 1C, down the corridors, straight thru IRIS, but baggage still beat me to the belt! Must be a first......
