Donald Trump's four-day visit to the UK is well and truly under way after Theresa May rolled out the red carpet at Blenheim Palace for a lavish banquet.

The US President and First Lady Melania are tonight dining with the PM, MPs and business leaders at the Oxfordshire palace.

It comes amid widespread protests across the UK and heavy police protection.

The couple landed at Standstead Airport on Air Force One this afternoon, before taking Marine One to the US Ambassador's residence in Regent's Park to meet embassy staff.

During the visit, Trump - who today boasted he thinks the UK public 'like him a lot' - will also spend time with The Queen.

London security has been ramped up in a £30 million operation.

SAS troops are poised to counter any attack or incident, while up to 10,000 British police officers will be on duty throughout the visit.

London Mayor Sadiq Khan said 'trouble makers are not welcome' and the protest is "not anti-American", more a demonstration of the UK's expectation of the "highest standards".

Some cops have complained about the 'dire' accommodation they are staying in - with 'freezing' showers and 300 officers to one room.

Scroll down for live updates on his visit.