Donald Trump's White House is trying to secure an invitation for Nigel Farage to attend the state banquet being hosted by the Queen when the President visits the UK next month, allies of the Brexit Party leader have claimed.

The white-tie dinner at Buckingham Palace will be the centrepiece of Trump's trip, which will also include the commemoration of the 75th anniversary of D-Day.

The move would cause consternation in No 10, which is reeling from Mr Farage's surge in the opinion polls in the wake of Theresa May's failure to deliver Brexit.

The banquet is already being boycotted by Labour leader Jeremy Corbyn, Commons Speaker John Bercow, London Mayor Sadiq Khan and Lib Dem leader Sir Vince Cable.

President Donald Trump (left) with Nigel Farage after they met in March. Trump is now trying to secure an invitation for Farage to join a state banquet hosted by the Queen for the President

But Mr Farage has longstanding links to Trump – he was the first British politician to visit him in Trump Tower after his shock victory in the 2016 Presidential election.

Heads of State invited to such banquets are allowed to request places for a small number of guests, with Mr Trump said to be trying to bag one for his friend.

A Farage ally said: 'Overtures have been made about Nigel going in with the US contingent. We have been told that his attendance would be a 'red line' for No 10, but it's not clear if they would be able to stop him coming.'

Last night both the White House and Buckingham Palace refused to comment.

No 10 said it had not yet received the final guest list.

Mr Farage told The Mail on Sunday that he was not going to 'get dragged into' discussing it and was focused on Thursday's EU elections.

But last week he lampooned Mrs May for being jealous of his good relations with Washington compared with her own stormy relationship with Trump.

He said: 'The last time he came to the UK, one of the Government's red lines was that he wasn't to meet me. You would have thought if the British Government was acting in the national interest, they would have tried to use me constructively.

The white-tie dinner at Buckingham Palace is already being boycotted by Labour leader Jeremy Corbyn, Commons Speaker John Bercow, London Mayor Sadiq Khan and Lib Dem leader Sir Vince Cable

'But of course Theresa May doesn't care about the national interest, she only cares about the Conservative Party's interest.'

The latest fallout comes after Washington raised concerns about the timing of Mrs May's planned Commons Brexit showdown, which is due the same week as Mr Trump's visit on June 3-5.

The Americans fear the Brexit turbulence risks overshadowing the visit, with one Whitehall source saying it was 'a sore point'.

A US government source added: 'It did strike us as odd and if you want the President to spend his whole trip talking about Brexit, then this was the way to do it.'

Meanwhile, police ordered a McDonald's near Mr Farage's Scottish campaign stop on Friday not to sell milkshakes or ice cream amid fears they would be thrown at the former Ukip leader.

With hundreds of supporters and dozens of protesters arriving at Edinburgh Corn Exchange for an EU elections rally, staff at the fast-food outlet were told not to serve certain products following a spate of food-throwing incidents.

Police Scotland refused to comment, but a member of staff, who did not want to be named, described the situation as 'ridiculous'.