Mr. Sam Laidlaw, Centrica's Chief Executive, said: "We have made good strategic progress across the Group in 2013, investing along the gas value chain to secure long term, affordable energy supplies for our customers. We have completed strategic reviews in both British Gas and Direct Energy, and introduced new management structures. These will help us deliver consistent, high quality customer service, reduce costs and drive growth through innovation. In Centrica Energy, we entered into a number of key strategic transactions to drive long term growth and we also added reserves from the drill-bit, mainly in Norway."