US President Donald Trump and his wife Melania are in Scotland for a private weekend visit
The couple are staying at Mr Trump's Turnberry hotel on the Ayrshire coast
A march and rally against the visit took place in Edinburgh
Mr Trump played an afternoon game of golf at the Turnberry resort which he bought in 2014
On Friday the US leader met the PM Theresa May at Chequers and The Queen at Windsor Castle
Mr Trump's presidential car - known as The Beast - pulls up outside the palace.
Theresa and Philip May shake hands with the couple and appear to exchange some pleasantries, before watching the military bands perform from the palace steps.
Prime Minister Theresa May and her husband, Philip, await the president's arrival at the ornate gates of the palace.
She is wearing a sleeveless, full-length, deep red dress.
Image source, PA
Image source, ReutersA red carpet has been laid up the grand steps of the palace.
To the right the dignitaries are gathered including new Foreign Secretary Jeremy Hunt, Cabinet Office minister David Lidington, Chancellor Philip Hammond and International Trade Secretary Liam Fox, who was the first minister to greet Mr Trump at the airport this afternoon.
Some of Mr Trump's helicopters are reported to be circling above Blenheim Palace, and are expected to land in a couple of minutes.
The Welsh, Irish and Scottish guards' bands have been entertaining the gathered business leaders and politicians, who are all dressed up in black tie and waiting in the warm evening sun.
The couple held hands as they walked the short distance from the residence to the helicopter, but there were no smiles for the waiting photographers.
Image source, AFP
Image source, Reuters
Image source, AFP
President Trump and the First Lady are aboard a helicopter on their way to Blenheim Palace.
The couple emerged from the US ambassador's residence and posed for cameras briefly in the garden.
Mr Trump was dressed in black tie for tonight's gala dinner hosted by the prime minister and Melania was wearing a full-length pale yellow gown with a type of shoulder cape.
The BBC's Joe Nimmo writes:
Police officers have said they estimate there are more than 1,000 people now protesting outside Blenheim Palace.
A live band has started playing and the noisy crowd is anticipating Donald Trump’s arrival.
Outside a fenced off area in Regent's Park, some protesters carried placards saying "Special Relationship? Just Say No" and "No to Trump, No to War".
A handful of women made noise with a whistle, a saucepan and bells to make themselves heard.
Jane, from Scotland, said: "I promised myself if he ever stepped foot in this country I would come out and protest."
The retired teacher, who did not wish to give her surname, said she mostly disagreed with Mr Trump's views on climate change but disliked his "whole attitude".
Image source, PA
Image source, PA
Image source, PA
Image source, PA
Image source, PAThe presidential helicopter lands in the grounds of the US ambassador's residence, Winfield House, in London's Regent's Park.
The BBC's Duncan Kennedy at Blenheim Palace says...
Image source, Getty Images"It's so noisy, the protest. we think five, six, 700 protesters are here in east Oxfordshire.
"It's very lively, very noisy, peaceful at the moment; with the kind of people you don't normally see at protests.
"Really they've got two objections to Donald Trump being here. First of all they regard him as a racist. Others are saying they regard him as a misogynist, somebody who has bad attitudes towards women.
"In a sense, they're putting the policies of Donald Trump to one side and picking on the man.
"He's due here in a couple of hours' time to have dinner with about 150 business leaders. The people here want to get a message to him loud and clear that he's not welcome.
"They want to make as much noise as possible to send a message, 'Mr Trump, we don't want you here in the United Kingdom'."
A helicopter spotted flying over Regent's Park in London is expected to pick up the president and First Lady shortly to take them to Oxfordshire for their dinner with Theresa May and 150 or so business leaders.
The BBC's Jennifer Scott in Regent's Park writes:
There are probably closer to 100 people now protesting and creating that "wall of sound" as promised.
After a raft of people speaking, the sounds of crying children from the US-Mexican border was played to an emotional crowd.
Now, they are turning their anger into sound, with shouts, drums and even one woman hitting a pan with a metal spoon.
They have vowed to stay here and make as much noise as possible until the president gets back in his helicopter to fly to Blenheim for dinner.
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BBC News's Jennifer Scott is at the Regent's Park protest
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The prolific tweeter that he is, Mr Trump has not yet turned his attention to his UK visit.
He has just posted a "very nice" note sent by North Korean leader highlighting the "progress" made since their meeting in Singapore last month. And two hours earlier turned his attention to an article describing him as the "most consequential president in history" when it comes to achieving jobs growth among Hispanic and Latino voters.
But the president did retweet a picture of his arrival at Stansted taken by a New York Times photographer accompanying him on the visit.
The Liberal Democrat leader tweets...
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Image source, Getty ImagesWhen Trump touches down on UK soil he will become the latest in a string of US presidents set for a meeting with the Queen.
Among the protesters, Sara Ritterbach moved to the UK from Germany a few months ago and thinks President Trump is "causing chaos" in her home country as well as her adopted one.
The 19-year-old said:
Quote MessageI do not support his politics, whether it's climate change or what he is doing with children on the border and immigration. Everything he is doing is wrong for me."
Tamzin Merchant was leading the chants calling for Mr Trump to go home.
She said:
Quote MessageI don't think we as a nation should be playing host to Donald Trump. England is a nation proud of its multicultural society. Trump has abominable policies both at home and overseas. We shouldn't be putting the Queen through this. She's an old woman who doesn't need an orange man putting his hands on her."
The BBC's Jennifer Scott writes:
Outside the massive cordon surrounding Winfield House, a small group of perhaps 40 people are blowing whistles and banging percussion instruments to let President Trump know they are here.
The likelihood of him hearing their displeasure at his visit may be small, but it is early on in this two-day visit and there is a determination within the group to make as much noise as possible.
The event organisers are encouraging protesters to "make a wall of sound", saying the huge fence erected around the residence is because President Trump is "running scared".
A police chief has apologised after it was revealed hundreds of police officers assigned to help with the presidential visit had to sleep in conditions described as "an absolute disgrace".
Pictures posted on social media show rows of camp beds in a gymnasium, which will be used for officers to rest on after 12-hour shifts.
The Police Federation said prisoners in cells would be sleeping in better conditions than its officers.
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Essex Police's Assistant Chief Constable Pippa Mills has now apologised for the conditions the force imposed on officers staying in the county, having come from across the UK to join the operation.
She said alternative accommodation had now been found.
Chairman of the Hampshire Police Federation John Apter said he was pleased to hear of the move:
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A convoy of about 30 vehicles made its way through Oxfordshire earlier, travelling to Blenheim Palace ahead of President Trump's dinner there this evening.
It includes his bomb-proof limo, nicknamed The Beast.
Mr Trump himself isn't expected to leave central London until a little later.