EnQuest PLC (‘EnQuest’) today announces that EnQuest’s wholly owned subsidiary, EnQuest Britain Limited ("EBL") has agreed with CIECO Energy (UK) Limited (‘CIECO’) to acquire two of its affiliate companies which together hold a total of an 8% non-operated interest in the producing oil field Alba, in the UK Continental Shelf. The agreement is subject to the normal regulatory consent. This acquisition adds reserves and producing barrels and further diversifies EnQuest’s asset base.