British anti-Trump campaigners are declaring victory after reports that his state visit to the UK has been postponed amid fears that he would face angry protests in the streets.

The U.S. president was due to travel to the UK in early summer.

But The Sun newspaper quoted an anonymous government source as saying that Trump has agreed to delay the visit until October.

"Trump still really wants to come this year, but he wants the heat to die down a bit first," the source said.

"The White House watch what happens over here surprisingly closely, and they don't want to create a scene for our sake either."

Downing Street tried to calm speculation, saying that their position remains the same.

"An invitation has been extended and accepted. Dates will be announced in due course."

However, campaigners behind mass demonstrations in the UK last month agains Trump's visit said the news is proof that protests have had a real effect.

"The opposition to this state visit, and to Trump's policies, is growing every day," a spokesperson for the Stop Trump coalition said. "Whether he comes in spring or autumn, or to London, Birmingham or Scotland, we will meet him in huge numbers to say that the politics of hate and prejudice are not welcome here."

“Theresa May has badly miscalculated. The British people don’t want this racist, misogynist billionaire anywhere near them."

Other people reacted with joy on Twitter, calling it a "huge victory" for the movement:

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