EnQuest PLC ('EnQuest') today announces that it has completed the acquisition of a further 15% interest in blocks 9/2b and 9/2c including the Kraken oil discovery ('Kraken') from First Oil plc. The Operatorship of Blocks 9/2b and 9/2c formally transfers to EnQuest with completion. This agreement and all the other associated details of the transaction were announced on 26 April 2012.