Sorry to report I saw the incident happen and also heard it on the radio. The A320 crew elected to go around after losing the ILS signals and asked for circuit details. From a viewing position west of Eglinton I saw the A320 turned downwind RH at EGQB(I believe the pilot said he thought he was to high to land but he looked perfect to me i.e. wrong airfield). The radio at EGAE got rather involved on the servicablity of the ILS
and the controller annouced he was listening( on an Icom) to the ident though it could not be recognised. The Calibrater was holding at 15miles east and all the lights were on even the flashing lead in approach lights. The A320 turned tight base at Ballykelly and then disappeared from my view. The controller asked for a DME and pilot reported on the ground. He landed on 26 at EGQB stopping just short of the railway line that crosses the runway.
Unfortunate error or lots of errors I am afraid.