Both David Cameron and William Hague have turned down offers from Boris Johnson to lead an international climate change conference in Glasgow this November, according to reports.

The disclosure comes days after Downing Street sacked former energy minister Claire O’Neill from the role of president of the 26th United Nations Climate Change Conference (COP 26). Cameron’s former climate change minister Greg Barker told Newsnight: “My understanding is that he felt it was just a little too soon for him personally to come back into a front-line political role.”

Meanwhile, the former prime minister’s bodyguard has been suspended after leaving a loaded gun in a toilet on a flight from New York to London. A “terrified passenger” found the 9mm Glock 17 pistol - along with passports belonging to Cameron and the Metropolitan Police close-protection officer - in the loo of the BA plane on Monday, according to the Daily Mail.

Here some of the other key things that have happened to Cameron since he resigned as PM in 2016:

The memoirs The former PM’s memoirs, For the Record, was published by William Collins in September, despite previous reports that he wanted to hold off until after Brexit so as not to “rock the boat” during negotiations. Cameron - who reportedly bought a £25,000 shepherd’s hut to use as a writing room - promised before the book’s release that he would be “very honest” about his Leave-supporting former colleagues Michael Gove and Boris Johnson, as The Sunday Times reported. But he refuses “to own up to his cowardice in calling the EU referendum in this long and defensive memoir”, according to Andrew Rawnsley in a review in The Guardian“There are lengthy tracts of self-justification as he relitigates every controversy of his career before almost invariably coming to the conclusion: ‘I was right.’”

Other ventures Cameron has also been involved in overseeing the expansion of the National Citizen Service (NCS), the skills programme for teenagers that he set up while in power. The scheme is open to young people aged between 15 and 17 and involves outdoor activity trips, during which participants learn life skills and help organise social action projects. Cameron has also been attached to the same public speaking agency that secured former chancellor George Osborne earnings of more than £500,000 in just two months. Cameron’s profile on the Washington Speakers Bureau website introduces him as “one of the most prominent global influencers of the early 21st century” and says he offers lessons in leadership at an “extraordinary and turbulent time” in global affairs. Accounts released last week suggest Cameron made more than £800,000 last year from speaking and media appearances, the Daily Mail reports. The former Tory party leader is also on the board of several organisations, including the UK-China Fund, which he has vice-chaired since December 2017.