Boris Johnson reveals exact date 'unrestrained' memoir to be released

Harper will release his memoir in the United States, the nation of his birth, just five days later.

Unleashed will cover pivotal moments in Johnson’s political career, including his stint as London Mayor and the Brexit wars before and during his premiership.

Johnson led the Tories to win the 2019 General Election with a majority of 80 seats.

He later led the UK through the coronavirus pandemic and was ousted following a Cabinet cabal in summer 2022.

A number of scandals ultimately derailed his premiership, including partygate and the Chris Pincher affair.

Johnson’s publisher said Unleashed was an “honest, unrestrained and deeply revealing book by the politician who has dominated our times”.

Arabella Pike, publishing director at William Collins, added: “Unlike most top politicians, Boris Johnson is also a writer.

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“His book, Unleashed, is compulsively readable, stuffed to the brim with serious reflections on his time in office but written with his charismatic trademark wit, his vivid use of language and stories galore. We are delighted to be publishing this autumn.”

Johnson also said: “I am honoured that HarperCollins is publishing my personal account of the huge realignment that took place in UK politics in the last 15 years – and what may lie ahead.

“So stand by for my thoughts on Britain’s future to explode over the publishing world like a much-shaken bottle of champagne.”

Johnson left the House of Commons after resigning as the MP for Uxbridge & South Ruislip ahead of the publication of a damning inquiry by the privileges committee into his comments about partygate.

The committee was said to have been likely to recommend a suspension of 10 days, meaning a recall petition, which in turn would have triggered a by-election.

Johnson has been critical of Rishi Sunak over his revised Brexit deal, partial cancellation of HS2 and delay to net zero targets.

He also threw his weight behind a number of Conservative candidates ahead of July 4 and is expected to send tens of thousands of letters to voters.

Johnson’s Daily Mail column has seen the former Prime Minister renew his attacks against Sir Keir Starmer amid concerns that the Labour leader could win a super majority and could soon tie the UK to Brussels.

However, Johnson also sent a direct plea to voters in Clacton to support Giles Watling.

Watling, who was first elected as the MP for Clacton in 2019, is facing a challenge from Reform UK leader Nigel Farage.

Farage looks poised to win the Brexit-backing coastal constituency and could wreak further havoc for the Tories across England, a number of recent MRP polls have suggested.