Britain’s ambassador to Washington, Sir Kim Darroch — who said in a confidential memo to London that President-elect Donald Trump could be open to influence from the UK — says he has no regrets about his comments after they were leaked.

Darroch sent an urgent diplomatic memo to British Prime Minister Theresa May after Trump’s White House win and said while he was an “outsider” he would be “open to outside influence.”

In the memo, which was leaked to the UK’s Sunday Times, he said: “It bears repeating that this soon to be president-elect is above all an outsider and an unknown quantity, whose campaign pronouncements may reveal his instincts, but will surely evolve and, particularly, be open to outside influence if pitched right.” He added that Britain should work to continue its close relationship with America.

On Wednesday, Darroch, who later praised Trump’s “historic and impressive win,” hosted an elegant afternoon tea and champagne reception at his Washington DC residence to mark the 58th Presidential Inauguration.

He told The Post, “I stand by what I said, if an ambassador cannot say exactly what he or she thinks in a confidential memo, then there is no point in us being here. It was unfortunate that it was leaked by somebody in Whitehall.“

He continued, “We look forward to working with the Trump administration, continuing our special relationship with the US, and Prime Minister May will be traveling to meet with President Trump soon.”

President Obama famously banished a bust of Sir Winston Churchill from the Oval Office, in favor of a bust of Martin Luther King. Darroch said he would be happy for President Trump to put it back. He said, “We would be delighted if President Trump puts the Churchill bust back in the Oval Office…it is currently here [at the British Ambassador’s Residence] in a room upstairs.”

Proving that the memo leak hasn’t done anything to sour British and American relations, Darroch mingled with Senators Ted Cruz and Rand Paul, as well as Trump allies Gov. Chris Christie, Corey Lewandowski and Rudy Giuliani.

Other guests included former speaker Newt Gingrich, inaugural committee chief Tom Barrack, Senator Richard Shelby, Admiral Michael Rogers and Lord Ashcroft.