Mr Bolton, a long-term international supporter of Brexit who served in both George W. Bush and Donald Trump’s administrations, spoke to the Daily Express on a visit to the UK this week. The Republican heavyweight was also supportive of former Prime Ministers Boris Johnson and Liz Truss, who he believed were ejected on ideological grounds because the “Conservative Party is not as conservative as its name suggests.”
And he said that the UK and US had missed an opportunity by not signing an early trade deal.
But Mr Bolton warned “the London establishment” and Remainers want Brexit to fail.
He said: “I was a strong supporter of Brexit. I was here on referendum day, it was very exciting.
“The Remainers are actually behaving in a very Trumpian manner. For six years they haven’t accepted the result of the referendum.
“They tried to slow the withdrawal process down and for many of them the objective is to get Britain back in.
“They don’t accept the result of the vote.”
Along with the stalled US trade talks he also thinks that attempts to deliver the benefits of Brexit have been slowed down in Whitehall and with the EU.
He said: “Things which could have been done six years ago haven’t been done or been done very slowly.
“The Europeans have done exactly what we would expect. The old saying ‘the beatings will continue until morale improves’.
“They want to make an example of Britain so nobody else gets out either.
“That means a lot of benefits haven’t accrued to Britain because of this resistance.”
He also acknowledged that Joe Biden’s administration has been less than helpful, especially over Northern Ireland.
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Mr Bolton said: “In the Democratic Party they like the EU, it is an even bigger government. There is a pro-EU bias.
“I think the widespread belief in the Democratic Party this dispute over the Northern Ireland Protocol impedes the Good Friday Agreement.
“My view is that the exact opposite is true that the Northern Ireland Protocol is what is interfering with the Good Friday Agreement.
“The idea that somehow all the protections the EU would have with its members would be ruined if there was an open border in Ireland is completely wrong.
“I think if it weren’t for the EU, the Irish and the UK would have worked this out long ago.
“The sooner it’s done the sooner the benefits of Brexit will be clear.”
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Mr Bolton served as George W. Bush’s UN ambassador and then as Donald Trump’s national security advisor in 2018.
He fell out with Mr Trump subsequently and described him as being “like a pinball machine”.
He said: “He doesn’t have a philosophy, he doesn’t think in policy terms, his decisions are transactional one time decisions seen through the prism of how does this benefit Donald Trump.
“People say his policy on this, his policy on that, he didn’t have a policy. His decisions are like an archipelago of dots. You can try and draw lines between them and people do it all the time, he couldn’t draw lines between them.”
Mr Bolton blamed Trump for the failures of the Republicans to make gains in the midterm elections in November and said that he does not believe he will be the Republican nominee for President.
He said: “I wouldn’t annoint any nominee without competition. They benefit from competition. We have got over a dozen people who are looking seriously at running.”