Centrica has signed a £7 billion agreement to purchase 1 million tonnes of liquefied natural gas (LNG) annually from US firm Delfin Midstream over a 15-year period beginning in 2026. It comes after the British Gas owner struck a £4 billion deal with Norwegian energy company Equinor in June to deliver an additional 1 billion cubic meters of gas to the UK for each of the next three winters.