Mr Cameron let off steam last month on the island of Jura by hunting. The sport has become a favourite past time for the man who led to Remain in the EU campaign, and has been used as an opportunity to release his anger at the masters of Brexit.
As well as using his trip last month to bent at Boris Johnson, last summer Mr Cameron shot a deer and named it Michael Gove. Mr Cameron also took a swipe at the pair in his new autobiography For the Record, which will be released on Thursday.
Mr Cameron claimed the current Prime Minister “didn’t believe” in Brexit and only backed the Leave campaign to further his career.
He added Mr Johnson privately claimed there could be a “fresh renegotiation, followed by a second referendum” – which he now says he opposes.
Mr Cameron also labelled Brexiteer Michael Gove, who was once a close friend, a “foam-flecked Faragist”.
And he accused the leaders of the Leave campaign of declaring “open warfare” on him – and claimed they were guilty of “lying” to the public to win the 2016 referendum.
David Cameron shot a stag and named it Boris Johnson
Mr Cameron wrote that Mr Johnson wanted to become the “darling of the party” and “didn’t want to risk allowing someone else with a high profile – Michael Gove in particular – to win that crown”.
He wrote: “The conclusion I am left with is that he risked an outcome he didn’t believe in because it would help his political career.”
On Mr Gove, Mr said: “One quality shone through: disloyalty. Disloyalty to me and, later, disloyalty to Boris.”
He added Mr Gove’s claim that the public were tired of experts made him “an ambassador for the truth-twisting age of populism”.
Mr Cameron claimed the current Prime Minister “didn’t believe” in Brexit
He said: ”By the end, Boris and Michael seemed to me to be different people. Boris had backed something he didn’t believe in.
“Michael had backed something he did perhaps believe in, but in the process had broken with his friends … while taking up positions that were completely against his political identity.
“Both then behaved appallingly, attacking their own government, turning a blind eye to their side’s unpleasant actions and becoming ambassadors for the expert-trashing, truth-twisting age of populism.”
Mr Cameron said attacks by Priti Patel, who is now the Home Secretary, on his government’s immigration record “shocked me most” but he did not want to fire her and create a “Brexit martyr”.
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The former Prime Minister also wrote Boris wanted to become the “darling of the party”
He also says that Dominic Cummings, who is now a special adviser to the government. was part of a “cauldron of toxicity” with Nigel Farage.
Ms Patel said there was “no point going over the past” when asked about Mr Cameron’s memoirs during an interview on BBC One’s The Andrew Marr Show.
She said it was a “privilege” to serve in his government.
She said: “The referendum has happened, we’ve all moved on and the fact of the matter is we’re now working to deliver that referendum mandate. That is so important. There is no point going over the past.”
Mr Cameron’s memoir will be released on Thursday
Meanwhile, Scottish Liberal Democrat leader Willie Rennie has said David Cameron “humiliated our nation” as Prime Minister.
Speaking to Lib Dem members at the party conference in Bournemout, he also argued that Mr Johnson was “held hostage, a prisoner of Nigel Farage”.
He then said the Conservatives: “They are doubling down for no-deal, they are expelling their moderates.”
Mr Rennie also branded Labour’s opposition and position on Europe an “absolute embarrassment”.
Mr Cameron called Mr Gove a “foam-flecked Faragist”
He drew parallels between Brexit and Scottish independence, urging voters to “imagine the pain of breaking 300-year-old ties”.
The party’s Scottish leader said: “We can keep Scotland in the United Kingdom, and the United Kingdom in Europe. We don’t need or want independence.
“Some think independence would allow us to escape Brexit.
“But it will simply add to our woes. All the chaos of Brexit multiplied, and multiplied again.
“We need to learn the lessons of Brexit, not repeat the mistakes.
“Our ties with Europe are deep and valuable. Our ties in the UK are even deeper and even more valuable.
“Cutting those ties with Europe after 40 years is absolute torture.
“We should only imagine the pain of breaking 300-year-old ties. And it would be the vulnerable who would suffer most, just like Brexit.”