I write to call on the UK government to reject the Cambo oil field in the North Sea, and to prevent any further investment and licenses for new oil and gas fields in the UK Continental Shelf. To support the development of a new oil field is inconsistent with the UK’s commitment to the Paris Agreement, the UK 6th Carbon Budget, the UK’s credibility as the COP26 Presidency and the world’s commitment to limit warming to below 1.5°C to avoid the worst effects of climate change.