2013 Investor Forum

mmboe 2013 - Investor Forum Reserves and Resources Group Reserves and Resources 2,000 1,800 1,600 1,400 1,200 1,000 800 600 400 200 0 2009 2010 2011 2012 Uganda Commercialised ■Contingent Resources ■Commercial Reserves Slide 5 Europe and Asia 6% 1,203 mmboe Commercial Reserves 29% TULLOW Uit Reserves and Resources 1,203 mmboe • Commercial Reserves - 388 mmboe - TEN transferred to Reserves - 112 mmbo Contingent Resources - 815 mmboe - Uganda Resources commercialised - 604 mmboe Additions to Resources - 71 mmboe Total Resource potential 6.0 billion boe • Commercial Reserves - 6% of total Reserve and Contingent Resource life ~37 years Risked Prospective upside c.4.8bn boe - 60% increase Contingent Resources 65% Risked Prospective Upside Commercial Reserves Contingent Resources 6.0 bn boe

View entire presentation