Company Announcements

2010-03-09 A6 Evaluation Update 2010-02-23 A-6 Drilling Update 2010-02-12 LDP Interests in shares 2010-02-02 Spudding of the A-6 Well at Ship Shoal 201 2010-01-27 Company Update 27 January 2010

2009-12-17 Result of Annual General Meeting 2009-12-09 Notification of interests in shares 2009-11-30 Update to Total Voting Rights 2009-11-25 Notification of Interests in Shares 2009-11-25 Final Results 30 June 2009 2009-11-25 Notice of Annual General Meeting of Shareholders 2009-11-23 Result of General Meeting 2009-11-06 Proposed Placing 2009-11-02 Eugene Island A7 Well Update 2009-10-16 Company Update 2009-09-30 Appointment of Joint Broker 2009-09-28 Reserve Update 2009-09-16 Operations Update Sorrento Dome 2009-09-15 Notification of Interests in Shares 2009-09-07 Operational Update 2009-07-23 LDP Quarter End Trading Update 2009-07-06 Notification of Interests 2009-06-11 Ship Shoal 202 "A" Platform Acquisition 2009-05-14 Statement re Letter of Interest 2009-05-12 Application of the City Code 2009-05-12 Leasehold Update 2009-05-11 Production Operations Update 2009-05-08 Third Party Expression of Interest 2009-04-16 Acquisition of Ship Shoal Block 202 2009-04-02 Announces Additional Management Staff 2009-03-31 Posting of Interim Results 2009-03-23 Notification of Interests in Shares 2009-03-19 Successful MMS Lease Sale 208 2009-03-16 Leed Interim Results at 31 December 2008 2009-02-25 Eugene Island Update A6 Well Completion 2009-01-22 Director Shareholding 2009-01-19 Notification of Interests in Shares 2009-01-15 Notification of Interests in Shares 2009-01-12 Reserve and Production Update 2009-01-06 Eugene Island Update

2008-12-01 LDP A8 Drilling Update 2008-10-29 Directorate Change 2008-10-29 Result of Annual General Meeting 2008-10-09 Operations Update 2008-10-07 Directors Dealings 2008-10-07 Notification of Interests in Shares 2008-10-06 Eugene Island Update 2008 Notice of Annual General Meeting of Shareholders 2008-09-30 Annual Results 2008-08-26 Eugene Island Update 2008-08-14 Notification of Interests in Shares 2008-08-07 Notification of Interests in Shares 2008-08-07 Notification of Interests in Shares 2008-08-05 Notification of Interests in Shares 2008-08-05 Notification of Interests in Shares 2008-08-01 Update Voting Rights 2008-07-29 Placing & Subscription 2008-07-21 Leed Transfers Partial Interest in Eugene Island Assets 2008-07-03 Drilling Update 2008-07-01 Award of Lease 2008-06-26 Change of Financial Year 2008-06-20 Drilling Update 2008-06-19 Notice of Interest in Shares 2008-06-17 Award of Lease 2008-06-05 Drilling Update 2008-05-23 Drilling Update 2008-04-18 Notice of Interest in Shares 2008-04-18 Operations Update 2008-04-10 Eugene Island Completion & Well Test 2008-03-19 Successful Participation MMS lease sale 206 2008-03-17 Reserve Update 2008-03-17 Drilling Update 2008-03-13 Challenger Acquisition 2008-03-07 Drilling Update 2008-02-28 Drilling Update 2008-02-08 MMS awards Ship Shoal 201 2008-02-07 Drilling Update Leed Signs Purchase & Sale Agreement, 30 January 2008 Lease Award 28 January 2008 Drilling Update 8 January 2008

Update to Total Voting Rights 31 December 2007 Posting of interim results to shareholders Interim results for 6 months ended 30-09-07 Update to Total Voting Rights 08 November 2007 Notice of Annual General Meeting of Shareholders Successful Participation in MMS Lease Sale 205 Operational Update 17 September 2007 Notice of Interest in Shares 04 September 2007 Rig Contract 28 August 2007 Notice of Interest in Shares 21 August 2007 Notice of Interest in Shares 20 August 2007 Disclosure of Information required by AIM rule 26 17 August 2007 Notice of Interest in Shares 17 August 2007 Notice of Interest in Shares 16 August 2007 First Day of Dealings Announcement 15 August 2007