As I mentioned in replies to similar questions raised in the House on 8 February and 21 March, there will be a substantial increase this year in offshore drilling activity with at least three exploration wells, one appraisal well and two development wells being drilled. Enterprise Energy Ireland Limited recently drilled an exploration well in the Rockall Trough but it has now been plugged and abandoned. It is expected that further exploration wells will be drilled by Statoil and EDC in the Porcupine and Fastnet basins respectively. Subject to availability of a drilling rig, Ramco Oil and Gas also proposes to drill one or two exploration wells in the Celtic Sea. Enterprise Energy Ireland Limited also proposes to drill a further appraisal well in the Corrib prospect in the Slyne basin and two development wells will be drilled by Marathon in the south-west Kinsale area of the north Celtic Sea basin.