Analyst Visit and Activity Up

Tullow Oil PLC 15 October 2007 News Release 15 October 2007 Analyst visit to Uganda and Activity Update 15 October 2007 - Tullow Oil plc (Tullow) announces that it is hosting a three day event in Uganda for a group of sell-side analysts. Prior to the visit, Tullow is providing the following update on its operations in Gabon, Ghana, and Uganda. No new trading information will be released during the visit. The event will include a series of presentations on our activities in Uganda. Copies of these presentations will be available on the Group's website (www.tullowoil.com) from 9:30am today, 15 October 2007. Activity Update Gabon - the Mpano-1 well (Tullow 40%) spudded on 2 October 2007. The well is located in the Nziembou licence and lies on trend with the Niungo field. A second well, the Oba-5 appraisal well (Tullow 5%) spudded on 7 October 2007. This well is located in the Oba Production Licence and will test the Ombena prospect below the Oba field. Ghana - A 900 sq km high resolution 3D seismic survey is currently in progress as part of the programme to fast-track the appraisal of the Mahogany and Hyedua discoveries. The survey will cover the entire Mahogany / Hyedua accumulation. Discussions are also well advanced to secure rigs for a two well drilling programme planned for the first quarter 2008, and for a further two to four well programme scheduled for the second quarter 2008. Uganda - Preparations for the Ngassa exploration well (Tullow 100%) are on schedule and the well is expected to spud on 23 October 2007. For further information contact: Tullow Oil plc Citigate Dewe Rogerson Murray Consultants (+44 20 8996 1000) +44 20 7638 9571) (+353 1 498 0300) Tom Hickey Martin Jackson Joe Murray Chris Perry George Cazenove Notes to Editors Tullow is a leading independent oil & gas, exploration and production group, quoted on the London and Irish Stock Exchanges (symbol: TLW) and is a constituent of the FTSE 100 Index. The Group has interests in over 110 exploration and production licences across 23 countries and focuses on four core areas: Europe, Africa, South Asia and South America. Tullow's European interests are primarily focused on gas in the UK Southern North Sea where it has significant interests in the Caister-Murdoch System and the Thames-Hewett areas and operates over 70% of its production. In Africa, Tullow has exploration and production in Gabon, Cote d'Ivoire, Congo (Brazzaville), Mauritania and Equatorial Guinea and a gas field development in Namibia. Tullow also has exploration programmes in Mauritania, Senegal, Cameroon, Uganda, Congo (DRC), Tanzania, Madagascar, Angola and Ghana. In South Asia, Tullow has exploration and production in Pakistan and Bangladesh and high impact exploration activities in India. In South America Tullow has high impact exploration interests in Trinidad and Tobago, French Guiana and Suriname. For further information please refer to our website at www.tullowoil.com ENDS This information is provided by RNS The company news service from the London Stock Exchange CFFIFSESWSEIS

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