President Donald Trump and Britain's Prime Minister Theresa May react during a ceremony at the new NATO headquarters before the start of a summit in Brussels, Belgium, May 25, 2017. REUTERS/Christian Hartmann LONDON — U.S. President Donald Trump's planned state visit to Britain has been postponed after he told Prime Minister Theresa May in a phone conversation he did not want to come until the public supported his visit, the Guardian reported on Sunday.

Citing an unnamed adviser at May's Downing Street office who was in the room at the time, the Guardian reported on its website that the conversation between the two leaders took place in recent weeks.

Trump had initially been expected to visit the UK in March, but that visit was then postponed until June after huge public protests right across the UK, with tens of thousands gathering in cities and towns across Britain to voice their opposition.

It now appears that the visit will be delayed even further, with protests highly likely should the president decide to visit the UK. Downing Street, however, said there had been no change to plans for Trump's visit.

"We aren't going to comment on speculation about the contents of private phone conversations. The Queen extended an invitation to President Trump to visit the UK and there is no change to those plans," a spokeswoman for May's office said.

News of the trip's possible postponement comes less than a week after Trump and London Mayor Sadiq Khan entered a very public row following the terrorist attack in the London Bridge area of the city last Saturday.

Trump used the word "pathetic" to describe the response of Khan to the attack, which prompted a representative for Khan to say Trump was "ill-informed" and had taken the London mayor's comments "out of context" after Trump tweeted at the weekend that Khan had told Londoners "not to be alarmed" by the attack.

The comments were in response to a statement by Khan in which he had told Londoners not to be alarmed by the increased police presence on the streets of London.

Trump removed this context, however, giving off the assumption that Khan had suggested the attack, which left seven people dead and many more injured, was not worth being alarmed about.