A US-UK trade deal “will absolutely be possible”, Donald Trump has said, after he told The Sun Theresa May’s Brexit plan could kill an agreement.

Speaking after talks at Chequers, Mr Trump said the US-UK relationship is “the highest level of special”, while Mrs May said they had discussed plans for an “ambitious” trade agreement.

Mr Trump and his wife, Melania, later had tea with the Queen at Windsor.

Thousands of people are protesting in London against Mr Trump’s visit.

A large balloon, portraying the president as a baby, has been floated in Parliament Square as part of the demonstrations. Other protests are taking place across the UK on Friday and Saturday.

The Queen greeted Mr Trump and the first lady as their motorcade arrived at Windsor Castle.

The band of the Coldstream Guards then played the Star-Spangled Banner and she invited the president to inspect the guard of honour.

The meeting lasted nearly an hour and was the final engagement in Mr Trump’s two-day working visit to the UK.

The Trumps later took off from Windsor in a presidential helicopter on their way to Scotland for a weekend stay at his Turnberry golf resort.