Donald Trump claims he has been invited to visit Downing Street

Downing Street sources deny an invitation has been issued but this would change once Trump became an official nominee

Donald Trump, presumptive US Republican party nominee

Donald Trump claims he has been invited to meet David Cameron at Downing Street on a forthcoming visit to the UK.

The US billionaire politician is expected to visit Britain in late June to coincide with the opening of his new golf course in Scotland, where he has significant business interests.

“They have asked me to visit 10 Downing Street. And I might do it,” the presumptive Republican nominee told MSNBC's Morning Joe show.

With the Republican nominating convention set to take place in July, Mr Trump would not be the official nominee at this time and there would be no requirement to meet him.

A Downing Street spokesman said: "It's long-standing practice for the PM to meet with the Republican and Democrat presidential nominees if they visit the UK.

"Given the parties have yet to choose their nominees, there are no confirmed dates for this."

If Mr Trump were to visit Britain once he was the official nominee, not being invited to meet the Prime Minister would be considered a diplomatic snub.

Such a visit might be awkward, with Mr Cameron having described Mr Trump’s political approach as “divisive, stupid and wrong”.

Mayor of London Sadiq Khan, who described the conservative figurehead as “ignorant”, has already invited Mr Trump to visit his home and Mosque, however.

“My point to Donald Trump is: if it is the case that your views on Islam are ignorant, if it is the case that you have not met Muslims who are compatible with, comfortable with Western values, to all purposes ‘normal’ – come to London,” he told the Huffington Post UK website.

“There are literally hundreds of thousands of Londoners who are Muslim and Western. Meet my family, meet me, meet my friends, meet other Londoners and hopefully that will reassure that it’s possible.”

In January MPs debated whether to ban Mr Trump from the UK after a petition calling for him to be barred reached over half a million signatures.

The call was made on the back of a public backlash after Mr Trump announced a policy of banning all Muslims from travelling to the United States.

The US Republican party holds its nominating convention from 18 to 21 July in Cleveland Ohio. Mr Trump is expected to be nominated.

If he is, he is likely to face presumptive Democratic party nominee Hilary Clinton in a presidential election later this year.