There's movement at Windsor Castle.

The doors have opened and the King and Donald Trump have exited and are having a brief chat on the threshold.

Daniela Relph
Senior royal correspondent, at Windsor Castle

The president's car, the Beast, is back in the Quadrangle of Windsor Castle ready for Trump's departure to Chequers.

It’s a more low key affair than yesterday - a detachment of the Windsor Castle’s King’s Guard will see the president off any moment.

As we've been reporting, US President Donald Trump will soon be meeting Prime Minster Keir Starmer.

He will travel to Chequers - the PM's country residence - from Windsor, where he will be welcomed by Starmer and his wife.

Upon arrival, Trump will be treated to an air display by British Army parachuters and a bagpipers' performance.

After staying overnight in Windsor Castle, US President Donald Trump is due to bid his final farewell to the King and Queen in the next few minutes.

We'll bring you the latest images and comments from the president as soon as we have it.

You can watch his departure from Windsor Castle live at the top of this page.

Helena Wilkinson
Reporting from outside Windsor Castle

Image source, PA Media

Later, the Queen will show the First Lady the Queen Mary's Dolls' House in Windsor Castle.

It's the largest and most famous dolls house in the world with a fully stocked wine cellar, a garden and even running water and working lifts.

There's also a library with original works by famous writers from the day.

The Doll's House was built between 1921 and 1924 for Queen Mary and designed by the British architect Sir Edwin Lutyens.

It's normally open to the public and is one of the castle highlights.

Image source, AFP via Getty Images

Chris Ruddy, chief executive of conservative media outlet Newsmax Media and a long-time friend of Donald Trump, was among those lucky enough to attend last night's state banquet.

"The president and Melania [the first lady] were just absolutely gleaming and they don’t gleam often – they’re not impressed that much by many things," Ruddy told BBC Radio 4's Today programme a little earlier.

He says that Trump spent much of the evening "deep in discussion" with the Princess of Wales and Ruddy could tell from his body language that he was "fascinated" and "really engaged".

Speaking about King Charles, Ruddy says Trump has "developed a rapport" that has existed for several years and that the US president "sees the British brand, the brand of the royal family, as just so powerful".

Image source, Reuters

The decision of US firms to pledge £150bn worth of investment over the next decade is a “real vote of confidence in the British economy and in our country”, the chief secretary to the Treasury says.

Speaking to BBC Breakfast, James Murray cites the example US company X-Energy joining forces with Centrica – the owners of British Gas - to invest and build up to 12 advanced modular reactors in Hartlepool as a positive sign for the future of Britain.

“These will create enough energy for 1.5 million new homes, 2,500 jobs will go into the manufacturing and the setting up of these new reactors and it will add billions to the economy," Murray says.

"What it really means for people’s lives is more jobs, cheaper energy and making people better off.”

Image source, Getty Images

As BBC Business Editor Simon Jack mentioned in our last post, several major US tech firms pledged tens of billions of pounds worth of investment in the UK.

The biggest single investment comes from Microsoft, which has announced a $30bn (£22bn) spending package - its largest ever outside the US.

Google has promised £5bn for AI research and infrastructure over the next two years, while computer chips company Nvidia announced £500m towards building more data centres to help operate AI in Britain.

It's part of a £31bn agreement, dubbed the "Tech Prosperity Deal", between the UK government and several US tech giants as part of President Donald Trump's second state visit to the UK.

Tech leaders including Nvidia's Jensen Huang, Microsoft's Satya Nadella, and OpenAI boss Sam Altman also accompanied Trump to the state banquet at Windsor Castle yesterday evening.

£150bn is a blow-your-socks-off figure - but this is not money in the bankpublished at 09:08 BST 18 September

09:08 BST 18 September

Simon Jack
Business editor

It's a blow-your-socks-off number - and the government clearly welcomes what it describes as "record breaking" levels of promised investment.

Now, foreign direct investment into the UK is extremely volatile. It averages over the last ten years at about £50bn a year.

So, £150bn sounds like a lot. £90bn comes from the private equity group Blackstone, which back in June pledged to invest £370bn across all of Europe. It looks like the UK has got an oversized slice of this.

But this is over 10 years and things can change.

These are understandings, commitments, promises, pledges. This is not money in the bank.

More significant is some of the tech spending, which we've seen from the likes of Microsoft and Google. This feels like money, growth and jobs now.

Image source, Getty Images

The former global affairs boss of social media giant Meta, Nick Clegg, says the newly announced tech and investment deals with the US are "crumbs from the Silicon Valley table”.

Clegg tells the BBC Radio 4's Today programme that while the UK shouldn't "turn its nose up" at US investment entirely, "some sort of perspective needs to be applied to all the hype that comes from the government and the tech companies at times like this".

The former deputy PM also says there is a profound imbalance in the UK's relationship with the US when it comes to tech, noting: “Not only do we import their technology, we export all our good people and ideas.”

Clegg believes that the British government needs to loosen its reliance on Washington and look instead at how the UK can develop and grow its technology companies more independently.

Henry Zeffman
Chief political correspondent from Chequers

Image source, Getty Images

Good morning from Chequers, the prime minister’s country residence, where Sir Keir Starmer will welcome President Trump in just a few hours.

The state visit overall is about sustaining and solidifying the strong bond between the UK and the US.

Today, though, it’s for the prime minister to solidify the surprisingly strong bond he has forged with the president over the past nine months.

On trade they are on solid ground, with the government announcing £150 billion of investment alongside today’s visit.

On foreign policy, both Ukraine and Gaza, there are clear disagreements which Downing Street will not want to erupt into public view.

For that reason and many others, by far the moment of greatest public jeopardy for Starmer is the press conference in the afternoon.

What will Trump say? Who knows – fundamentally, Donald Trump is Donald Trump.

Image source, Getty Images

The government has serious business to conduct today when Trump meets Starmer in his country residence.

The pair share a good relationship; both often has positive words for the other, despite hailing from very different political schools (to put it mildly).

Back in February, during Starmer's first visit to the White House, the leaders' friendliness was caught on camera by the world's press.

The president appeared to be genuinely taken aback when Starmer handed him the invitation from the King for a second state visit. "That says at Windsor; that's really something," he said.

Trump would later call Starmer "a very tough negotiator". High praise indeed from the self-styled dealmaker. The UK would later negotiate the lowest tariff rate of any other country that struck a deal with the US.

Then in July, during a private four-day visit to Scotland, signs of further warming.

Trump told reporters: "I like your prime minister. He's slightly more liberal than I am - as you probably heard - but he's a good man. He got a trade deal done."

And later: “The prime minister’s done a great job. I want to just tell that to the people of the United Kingdom. He’s done a very, very good job.”

The two leaders will reunite at Chequers later - unlikely friendship aside, this afternoon could be a rollercoaster, writes our political editor.

Rob Corp
BBC Verify Live editor

While the official cost of US President Donald Trump’s unpreceded second state visit won’t be released for some time, the bill for his first in 2019 is available on the Foreign Office’s website.

It reveals a total cost of just over £427,000, including:

• £99,668 on entertainment
• £32,816 on transport
• £31,732 on accommodation

Crucially, however, the figures exclude key costs like policing and security - and that’s where the bill really climbs.

Last time the Metropolitan Police spent £3.4m, including £800,000 on overtime alone, according to a Freedom of Information release.

A former Met commander told BBC Verify that state visits often require road closures and officers carrying out full checks on street furniture - including inspecting street lamps and drains. This is added to the cost of policing protests and other operational duties.

He explained that forces are normally expected to pay out of their existing budget, but can apply for a Home Office grant if additional costs are incurred.

However, unlike French President Emmanuel Macron’s visit in July, Trump won’t be taking part in a parade - and is not expected to appear in public at all.

Despite the cost, some say state visits help improve diplomatic and trade relations - making them a price worth paying.

Image source, Getty Images

A unique selection of British gifts will be given to Donald and Melania Trump during their visit to Chequers later today, Downing Street says.

For Trump, this includes a bespoke red box - briefcases used by government ministers to hold and transport official ministerial papers - which No 10 says will "symbolise the special relationship between the UK and US".

The first lady will receive a silk scarf based on artwork created by children from London’s St Mary's Ukrainian School called "We Can Dream Again" - a tribute to her efforts to help children caught up in the war. The scarf was designed by Ukrainian artist Mariya Dykalo.

The Trumps will also receive a hamper with local gifts from Chequers, including homemade jams, and samples of homemade shortbread.

Also inside the hamper will be two handmade English bone China mugs from a local designer, two baubles depicting Chequers, and some light reading - British author Norma Major's 1996 history of the estate, which outlines its management in that time and the lives of the prime ministers who lived there.

James Landale
Diplomatic correspondent

Image source, Reuters

This state visit has been designed to improve UK-US relations and cement the government’s relationship with an at-times-unreliable ally.

Diplomats have said the president would focus on royal pageantry and avoid controversy. But the potential for disagreement remains.

Peter Mandelson: The sacking of Lord Mandelson as the UK’s man in Washington, for his links to the convicted paedophile Jeffrey Epstein, will cast a pall.

Questions about this may dominate today’s news conference.

The risk for ministers is that the focus shifts from Prime Minister Starmer’s competence to President Trump’s links to Epstein.

Middle East: The UK is expected to recognise Palestinian statehood at the United Nations next week to keep alive the idea of a two-state solution.

The US is fiercely opposed to this, saying the move would reward terrorism and encourage Israel to annex parts of the West Bank.

Free speech: The White House claims UK regulation of the Internet threatens free speech, which is something ministers reject.

US officials say the issue may come up, as it is something “we in this administration are very much focused on”.

• Read more from James Landale on the potential pitfalls of Trump's state visit

While the first lady will stay put in Windsor this morning, Trump will be heading to Chequers - the official country residence of the prime minister.

Located in Aylesbury, Buckinghamshire, it's a grace-and-favour address - meaning the manor house (and its grounds) are bestowed on each PM when they take office.

Built in the sixteenth century, Chequers is often used to host visiting official guests - including Ukrainian President Volodymyr Zelensky in 2023 - as well as cabinet meetings.

This isn't the first time Trump has visited the house. In 2018, he paid a working visit to the UK which involved talks at the manor with then-PM Theresa May.

Image source, Getty Images

Helena Wilkinson
Reporting from Windsor Castle

Image source, Helena Wilkinson/BBC

I'm outside Windsor Castle this morning.

It's early and quiet.

The President and First Lady spent the night in the castle - a setting which Trump described as the "ultimate".

Later here in Windsor it's all about the women - Melania Trump, the Queen and the Princess of Wales. The First Lady will spend time with them both.

But first breakfast! Although after last night's extravagant state banquet everyone still might be quite full.

Image source, PA Media

It's the final day of the US president's state visit to the UK.

Yesterday, he met the King and Queen, and the Prince and Princess of Wales in Windsor, for a carriage procession and state banquet.

Here's today's agenda:

• The royal wave goodbye: After staying the night at Windsor Castle, President Donald Trump and First Lady Melania Trump will formally bid farewell to the King and Queen
• Parting ways: The president will then travel to Chequers - the prime minister's country residence - while Melania stays put in Windsor for a tour of the Royal Library and Queen Mary's Dolls' House
• So, you thought the pomp was over?: Trump will be greeted by Keir Starmer, his wife, Lady Starmer, and (another) guard of honour when he arrives at Chequers
• Down to business: Starmer and Trump will jointly view the Sir Winston Churchill archives, before holding a bilateral meeting (all behind closed doors, mind)
• To top it all off: A joint news conference will be held by the two leaders - that's after they join Chancellor Rachel Reeves for a business reception
• DC calling: The Trumps will reunite afterwards and then it's back across the Atlantic aboard Air Force One

Image source, Getty Images

A record-breaking £150bn US investment package was announced yesterday, the latest in a series of deals that we have heard about during Donald Trump's state visit.

The UK government has called it the largest commercial deal of its kind and said it will provide 7,600 new "high quality" jobs.

Starmer has said he is delivering on his promise for "jobs, growth and opportunity" though the number is a small proportion of the 160,000 payroll jobs lost last year.

This comes after a major tech deal worth £31bn was also announced to coincide with Trump's visit. Microsoft and Google were among the tech giants pledging billions of pounds to the UK economy.

Chris Mason
Political editor

Image source, Reuters

If yesterday the focus was pictures, today it's words.

This is the latest point on the arc of the unlikely friendship between a president and prime minister of distinctly different politics and personality.

This afternoon's news conference could be a rollercoaster for Keir Starmer, stood alongside Donald Trump and his boundless capacity for unpredictability.

Likely topics where the men have a different emphasis or outright disagreement?

The UK’s expected to recognise a Palestinian state in the coming days – after the president has left. The White House thinks that’s a mistake.

Then there is Ukraine. The UK’s consistent support for Kyiv - seeing it as a battle for the West, its values and freedoms - and emphasised in the King’s regal rhetoric last night. In contrast: the president’s on-off support for President Zelensky and warmth towards President Putin.

Then - awkwardly - there is Jeffrey Epstein, the convicted sex offender who was friends with the president, friends with the King’s brother Prince Andrew and friends with the UK's ambassador to the United States until last week, Lord Mandelson.