Talisman’s principal operating areas in the NBA include Claymore, Piper (including Tweedsmuir), Tartan, Ross/Blake, Buchan/Hannay, Enoch/Blane and Quad 16. These seven principal operating areas encompass a total of 29 fields. Talisman currently holds interests ranging from 5% to 100% in the NBA fields, as well as in a number of production facilities and pipelines, including an 80% interest in the Flotta Terminal. Of the 29 fields, 20 are operated (with interests ranging from 25% to 100%) and nine are non-operated (with interests ranging from 5% to 25%). The Burghley field came onstream in October 2010.

In 2010, production from the NBA averaged 61,000 boe/d, which accounted for approximately 79% of Talisman’s total UK production. During 2010, Talisman participated in drilling two unsuccessful development wells in the NBA. An upgrade project to the Claymore compressors started during the year and will continue into 2011. Talisman plans to participate in drilling six development wells in the NBA in 2011 and also expects to restart development drilling at Claymore.

Description and data as of February 28, 2011. See Talisman's 2010 Annual Information Form for more information.