British Prime Minister Boris Johnson said Friday he thinks that President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE should stay clear of the upcoming U.K. election when he visits London next week for a NATO summit.

“What we don’t do traditionally as loving allies and friends, what we don’t do traditionally, is get involved in each other’s election campaigns,” Johnson told LBC radio, according to Reuters.

“The best [thing] when you have close friends and allies like the U.S. and the U.K. is for neither side to get involved in each other’s election," he added.

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Trump waded into U.K. politics in October when he remarked that Labour Party leader Jeremy Corbyn would be "so bad" for the U.K.

That prompted the British politician to accuse Trump of seeking to interfere in the U.K.'s upcoming general election, which is slated to be held Dec. 12.

"Donald Trump is trying to interfere in Britain’s election to get his friend Boris Johnson elected," Corbyn asserted on Twitter at the time.

Trump later also denied that he was was interested in including the National Health Service in trade negotiations, claiming that Corbyn had pushed a rumor that he was.

The president's remarks were from an interview on a radio show hosted by Nigel Farage, the controversial leader of the Brexit Party who is a vocal backer of Trump.

Trump, while calling in to the program, also weighed in on the potential effects of a Brexit deal and expressed admiration for Johnson.

"I have great relationships with many of the leaders, including Boris," Trump said. "He’s a fantastic man. And I think he’s the exact right guy for the times."

Johnson has said that if he wins the December election that Brexit will happen by Jan. 31.