The "special relationship" between the UK and America will survive a Donald Trump presidency, David Cameron has said as he congratulated the businessman on effectively securing the Republican nomination.

The Prime Minister said that he would "not get involved" in the US election after previously criticising Mr Trump for his comments on banning Muslims from America.

Mr Cameron has previously described Mr Trump as "stupid, divisive and wrong".

However, speaking at the G7 Summit in Japan, Mr Cameron said: "I would congratulate anybody who can get through those marathon processes for leading one of the two great political parties in the United States of America. It is an extraordinary marathon.

"When I think of the campaign I held in 2005, touring the UK to become leader of the Conservative Party it was pretty exhausting – but it is a small campaign compared to the vast nature of what these candidates have been through. So anyone who gets through that gets my congratulations."

Mr Cameron confirmed that he will meet Mr Trump if, as is expected, he visits the UK before the American election.

In the wake of Mr Trump's comments about Muslins, the Prime Minister said that if he came to the UK, the country would "unite" against him.