President Trump ripped London Mayor Sadiq Khan, whom he called a “stone cold loser” over the weekend, saying the mayor should not be attacking somebody who can do so much for England.

“I don’t think he should be criticizing a representative of the United States that can be doing so much good for the United Kingdom,” Trump said during a joint news conference with British Prime Minister Theresa May.

“He’s a negative force, not a positive force,” Trump added about Khan. “He hurts the people of this country.”

Trump also lashed out at Labour Party leader Jeremy Corbyn, who was speaking out Tuesday against Trump’s state visit during protests in London.

“I don’t know Jeremy Corbyn, never met him, never spoken to him, he wanted to meet today or tomorrow and I decided I would not do that,” Trump said.

Trump said Corbyn too is a negative force.

“I really don’t like critics as much as I like and respect someone who can get things done,” he said.