A furious David Cameron accused Boris Johnson of 'ruining my bloody career', according to the explosive diaries of a former minister. The ex-prime minister's frustration burst out on the eve of Mr Johnson's successful campaign to replace Theresa May in Downing Street. Mr Cameron gave vent to his pent-up feelings at his fellow Old Etonian's rise to power over breakfast with Sir Alan Duncan. The incident on May 1, 2019 is revealed in the former Foreign Office minister's memoirs In The Thick Of It. Former comrades: David Cameron, while still at No 10, with Boris Johnson in 2016 The entry reads: 'Breakfast with David Cameron. He is so glad not to be in the middle of everything that is going on at the moment.