President Donald Trump has arrived in the UK for his historic second state visit, which will see a crowded mix of royal pageantry, trade talks and international politics.

Before making the trip from the US on Air Force One, Trump sent positive signals, describing the visit as an honour and saying: "My relationship is very good with the UK."

"They want to see if they can refine the trade deal a little bit… I'm into helping them," said Trump, with a multi-billion US technology investment deal being announced as the president's visit got underway.

But Trump said the main purpose of the visit was to see "my friend" King Charles: "He represents the country so well, such an elegant gentleman."

Landing at Stansted airport, President Trump received an official welcome from a line-up on the runway including Foreign Secretary Yvette Cooper.

The president is spending the night in the US ambassador's residence, Winfield House, before a day of royal ceremony and lavish spectacle in Windsor Castle on Wednesday - with the president describing Windsor as "the ultimate" in settings.

Hosting him will be King Charles and a full line-up of senior royals, currently including Queen Camilla, who had to miss the Duchess of Kent's funeral on Tuesday because she was suffering from acute sinusitis.

Prince William and Catherine will be part of a ceremonial welcome, there will be a gun salute, military inspection and President Trump and First Lady Melania Trump will have a carriage procession within the Windsor estate.

Such spectacles will be aimed at pleasing a president who on Tuesday evening at Winfield House once again revealed his enthusiasm for royalty, saying about the King: "He's been a friend of mine for a long time, and everybody respects him, and they love him."

On his feelings about the UK, President Trump said: "I have a lot of things here that warm my heart. I want to tell you. It's a very special place."

A key message from the UK government will be to encourage the United States to maintain its commitment to Nato and to support Ukraine and there will be a much bigger than usual military line-up for the state visit.

There will be 1,300 service men and women, from the Army, Royal Navy and RAF taking part in the welcome, creating the largest ever guard of honour for a state visit to the UK.

A joint US and UK flypast by F-35 jets and the Red Arrows will fly over Windsor, watched by Sir Keir Starmer alongside the president, in a display showing the closeness of the military relationship.

The centrepiece of the state visit will be the spectacular banquet in St George's Hall, where King Charles and President Trump will make speeches, with guests enjoying a menu that's likely to be a culinary representation of the special relationship, with UK and US food.

Along with the royal pageantry and photo-opportunities, there will be efforts to influence the US president over trade and international co-operation.

State visits are a form of soft power diplomacy, using the royal charm offensive to build relations with important international partners - with none more important than the US.

As the visit got underway, a major technology deal was announced with US tech firms investing £31bn in the UK, including £22bn from Microsoft.

This will see co-operation in artificial intelligence, quantum computing and nuclear power, in a tech deal which Sir Keir Starmer hopes will begin "creating highly skilled jobs, putting more money in people's pockets".

Ahead of the visit, the owner of Google, Alphabet, announced a £5bn ($6.8bn) investment in the UK's artificial intelligence research.

And an agreement is to be signed between the US and UK on accelerating the development of nuclear power.

But ambitions to remove the current 25% tariff on UK steel exports to the US seem to have been put on hold - although this remains lower than the 50% tariff facing many other countries.

Anti-Trump protestors have begun to gather in Windsor - and giant images of Donald Trump and sex offender Jeffrey Epstein have been projected on to the walls of Windsor Castle.

Thames Valley Police later said four people had been arrested following an "unauthorised projection at Windsor Castle", with a statement saying they "take any unauthorised activity around Windsor Castle extremely seriously".

A heavy security operation will be in place during the presidential visit, which ends on Thursday afternoon.

But unlike other recent state visits, there will not be any moments visible to the public, with all the events taking place behind the walls of the Windsor estate or at the PM's country estate, Chequers.

The high street in Windsor has US flags flying, but they won't be seen by the visiting president.

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The man accused of fatally shooting Charlie Kirk confessed to killing the right-wing activist in a message to his roommate, prosecutors have alleged, as they announced seven charges against him.

Tyler Robinson, 22, left a note under a keyboard for his roommate to discover, said Utah County Attorney Jeffrey Gray. He added that the roommate was Mr Robinson's romantic partner.

According to Mr Gray, the note said: "I had the opportunity to take out Charlie Kirk, and I'm going to take it."

The prosecutor also shared text messages between the roommates, including one in which the defendant allegedly said he shot Kirk because he had "had enough of his hatred".

The suspect is being held without bail in a special housing unit at the Utah County Jail. He made his first court appearance on Tuesday, appearing remotely as prosecutors read the seven charges against him.

The charges are aggravated murder, felony discharge of a firearm, two counts of obstruction of justice, two counts of witness tampering, and committing a violent crime when children are present.

They also said they would seek the death penalty over the shooting of Kirk, who was killed by a single gunshot fired from a rooftop as he was speaking at Utah Valley University on Wednesday.

Arrested last week after a 33-hour manhunt, Mr Robinson has not entered a plea or confessed to police. Mr Gray also stressed that the suspect is innocent until proven guilty and will face trial by jury.

He unveiled a trove of evidence at a news conference on Tuesday, including the defendant's alleged confession and DNA found on the trigger of the rifle suspected to have been used in the crime.

An alleged hidden confession

Describing the alleged hidden note at a news conference earlier on Tuesday, Mr Gray said Mr Robinson had sent a text message to his roommate reading: "Drop what you're doing, look under my keyboard."

After reading the apparent confession, the roommate, who has not been named and is co-operating with investigators, replied: "What?????????????? You're joking, right????"

• Read full message thread between suspect and roommate
• Who is Tyler Robinson?
• Kirk shooting suspect appeared to confess on Discord
• 'We knew the family': Utah town in disbelief

Mr Gray cited further lengthy text message exchanges between Mr Robinson and his roommate, whom he described as his romantic partner. Authorities have said the roommate is transgender and transitioning from male to female.

In one exchange, the roommate asked Mr Robinson why he had killed Kirk.

"'I had enough of his hatred,'" Mr Gray cited the messages as saying. "'Some hate can't be negotiated out.'"

Mr Robinson also allegedly wrote: "To be honest I had hoped to keep this secret till I died of old age. I am sorry to involve you."

The roommate replied: "you weren't the one who did it right????"

Mr Robinson replied: "I am, I'm sorry."

Suspect's parents confronted him

Mr Gray also gave more detail about how Mr Robinson's parents became suspicious that their son may have been involved in Charlie Kirk's killing.

He said Mr Robinson's mother had seen a video of the suspect released a day after the shooting and told her husband it looked like their son. She confronted Mr Robinson over the phone about the resemblance, Mr Gray said, but he told her he had been home sick on the day of the shooting.

The father later confronted Mr Robinson, who responded by implying he might take his own life, the prosecutor said.

Mr Robinson was eventually persuaded to come to his parents' house and while there, allegedly hinted he was the attacker. He then said he wanted to "end it" rather than go to jail, Mr Gray said.

With the help of a family friend, who is a retired deputy sheriff, his parents convinced him to surrender to police and he was arrested late on Thursday - 33 hours after the shooting.

The suspect also allegedly told his parents that "there is too much evil and the guy spreads too much hate", in a reference to Kirk, according to the indictment.

Mr Robinson's mother told investigators her son had become more political in recent years, Mr Gray said, becoming more supportive of gay and transgender rights and entering a relationship with a transgender person.

But the prosecutor declined to answer when asked if Kirk had been targeted for his transgender views. "That is for a jury to decide," he said.

Mr Gray said Kirk was answering a question about mass shootings carried out by transgender individuals when the gunshot rang out. The bullet struck Kirk in the neck and he immediately slumped to the ground.

The bullet passed closely by other people, including nearby children and the person who asked Kirk the question, he said.

DNA on the rifle trigger

Mr Gray said the suspect's DNA had been found on the trigger of the rifle used in the shooting.

He also said Mr Robinson's father had suspected the weapon matched a bolt-action rifle that had once belonged to the suspect's grandfather. He contacted Mr Robinson after the shooting and asked him to send a photo of the rifle but he did not reply, Mr Gray said.

The suspect also detailed his movements after the shooting in messages sent to his roommate.

"I had planned to grab my rifle from my drop point shortly after, but most of that side of town got locked down," he wrote, according to prosecutors.

"Going to attempt to retrieve it again, hopefully they have moved on. I haven't seen anything about them finding it," another message allegedly read.

"I can get close to it but there is a squad car parked right by it."

Mr Robinson is also charged with witness tampering, prosecutors said, because he directed his partner to delete their messages and stay silent if questioned.

Two Labour MPs who were travelling to the occupied West Bank say they have been denied entry into Israel.

Simon Opher and Peter Prinsley were travelling in a parliamentary delegation to see medical and humanitarian work being carried out by organisations including Medical Aid for Palestinians.

In a joint statement the two MPs said it was "deeply regrettable" that Israeli authorities had "prevented them from seeing first-hand the grave challenges facing medical facilities in the region".

The Foreign Office and the Israeli Embassy in London have been approached for comment.

The two MPs were crossing into Israel from Jordan on Monday on a three-day visit organised by the Council for Arab-British Understanding (CAABU) when they were stopped by Israeli authorities.

Opher told the BBC they were held in a passport office before being handed a "legal form insisting that we leave the country" and then "escorted to a bus" back to Jordan.

The Stroud MP said he was told they were not being admitted on "public order" grounds and that representations from the Foreign Office to Israeli authorities had been rejected.

He said: "It's very disappointing. We are both doctors and we were really just going to look at healthcare facilities in the West Bank to see if there was anything we could do to support them."

"We weren't in any way trying to undermine the Israelis, just trying to see what we could do in the West Bank" where, he said, they had been told healthcare was getting increasingly difficult.

They had also been due to meet the British Consul General in Jerusalem as part of the visit, as well as meeting Palestinian and Israeli human rights organisations.

Both Prinsley, who represents Bury St Edmunds and Stowmarket, and Opher were first elected to Parliament in 2024.

Chris Doyle, the Director of CAABU, told the BBC that it had been organising trips for parliamentarians for many years and that recent denials of entry were "regrettable".

He said it was "important that British politicians get to see the situation on the ground at a very serious time to determine what's going on. It allows them to assess that situation and British policy towards it".

Earlier this year, two other Labour MPs, Abtisam Mohamed and Yuan Yang, were denied entry to Israel in April on another visit organised by the same organisation.

At the time Israeli authorities said the two MPs had "accused Israel of false claims" and were "actively involved in promoting sanctions against Israeli ministers".

Mohamed and Yang said: "Parliamentarians should feel free to speak truthful in the House of Commons, without fear of being targeted."

The then-Foreign Secretary David Lammy described the move by Israel as "unacceptable, counterproductive and deeply concerning".

In April, Liberal Democrat MP Wera Hobhouse was barred from entering Hong Kong to visit her newborn grandson.

Microsoft says its new $30bn (£22bn) investment in the UK's AI sector – its largest outside of the US - should significantly boost Britain's economy in the next few years.

Its package forms a major part of a $31billion agreement made between the UK government and various other US tech giants, including Nvidia and Google, to invest in British-based infrastructure to support AI technology, largely in the form of data centres.

Microsoft will also now be involved in the creation of a powerful new supercomputer in Loughton, Essex.

Speaking exclusively to the BBC Microsoft CEO Satya Nadella told the BBC of the tech's potential impact on economic growth."

"It may happen faster, so our hope is not ten years but maybe five".

"Whenever anyone gets excited about AI, I want to see it ultimately in the economic growth and the GDP growth."

Prime Minister Sir Keir Starmer said the US-UK deal marked "a generational step change in our relationship with the US".

He added that the agreement was "creating highly skilled jobs, putting more money in people's pockets and ensuring this partnership benefits every corner of the United Kingdom."

The UK economy has remained stubbornly sluggish in recent months.

Nadella compared the economic benefits of the meteoric rise of AI with the impact of the personal computer when it became common in the workplace, about ten years after it first started scaling in the 1990s.

But there are also growing mutterings that AI is a very lucrative bubble that is about to burst. Nadella conceded that "all tech things are about booms and busts and bubbles" and warned that AI should not be over-hyped or under-hyped but also said the newborn tech would still bring about new products, new systems and new infrastructure.

He acknowledged that its energy consumption remains "very high" but argued that its potential benefits, especially in the fields of healthcare, public services, and business productivity, were worthwhile. He added that investing in data centres was "effectively" also investing in modernising the power grid but did not say that money would be shared directly with the UK's power supplier, the National Grid.

The campaign group Foxglove has warned that the UK could end up "footing the bill for the colossal amounts of power the giants need".

The supercomputer, to be built in Loughton, Essex, was already announced by the government in January, but Microsoft has now come on board to the project.

Big tech comes to town

Mr Nadella, revealed the investment as Donald Trump has arrived in the UK on a three-day state visit

The UK and US have signed a "Tech Prosperity Deal" as part of the visit, with an aim of strengthening ties on AI, quantum computing and nuclear power.

Google has promised £5bn for AI research and infrastructure over the next two years.

UK Chancellor Rachel Reeves opened a £735m data centre as part of the investment on Tuesday in Hertfordshire.

There are some concerns that accepting so much money from US investors will mean the UK relies too much on foreign technology.

In July, Trump made clear his intentions were for the US to win global the AI race.

One of the ways it stated it would do this was to "export American AI to allies and partners."

The UK government has signed number of deals with US technology companies, including an agreement to use OpenAI services in the public sector and a £400m contract to use Google Cloud services in the Ministry of Defence.

Satya Nadella said he thought the agreement defined "the next phase of globalisation" and argued that having access to foreign tech services leveraged digital sovereignty rather than threatened it.

On the growing issue of AI taking over jobs, Nadella said Microsoft also had to "change with the changes in technology", having laid off thousands of staff this year despite record sales and profits. He described it as "the hard process of renewal".

AI growth zone in north-east England

The government also said there was "potential for more than 5,000 jobs and billions in private investment" in north-east England, which has been designated as a new "AI growth zone".

Last year, the government announced a £10bn investment into a data centre to be built near Blyth, Northumberland.

It has now announced another data centre project dubbed Stargate UK from OpenAI, chipmaker Nvidia, semiconductor company Arm and AI infrastructure firm Nscale.

That will be based at Cobalt Park in Northumberland.

OpenAI boss Sam Altman said Stargate UK would "help accelerate scientific breakthroughs, improve productivity, and drive economic growth."

However the UK version is a fraction of the firm's US-based Stargate project, which OpenAI launched in January with a commitment to invest $500 billion over the next four years building new AI infrastructure for itself.

So far, reaction to the agreement has been broadly positive, but its clear that there are many challenges ahead for the UK if it is to fulfil its intended potential.

The Tony Blair Institute described the news as a "breakthrough moment" but added that Britain had some work to do: "reforming planning rules, accelerating the delivery of clean energy projects, and building the necessary digital infrastructure for powering the country's tech-enabled growth agenda," said Dr Keegan McBride, the Tony Blair Institute for Global Change's emerging tech and geopolitics expert.

Matthew Sinclair, UK director of the Computer & Communications Industry Association, hailed the agreement as "a powerful demonstration of the scale of the AI opportunity for the UK economy."

But the Conservative Party highlighted that other big international companies such as the pharmaceutical giant Merck have recently cancelled or delayed their UK expansion plans.

Satya Nadella spoke to the BBC News in between board meetings, shortly before jumping on a flight to join Donald Trump as he arrives in the UK on a three-day state visit. Nadella will be among other tech leaders, including OpenAI's Sam Altman and Nvidia's Jensen Huang, attending the Royal state banquet on Wednesday.

He said he would use Microsoft's AI tool Copilot to help him decide what to wear.

"I was very surprised that there was a very different dress protocol, which I'm really not sure that I'm ready for," he said.

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The parents of a 15-year-old boy who was stabbed to death have said they will "not allow his name to be known as yet another statistic in the rise of knife crime".

Mohanad Abdullaahi Goobe died of his injuries after he was stabbed on Moston Street, Manchester, on Monday afternoon.

In a tribute his family said: "Mohanad was the baby of the family, he was quick to laugh, easy to love, with a ready smile".

Another 15-year-old has been arrested on suspicion of murder and remains in custody after the stabbing, Greater Manchester Police said.

In a statement, Mohanad's family said: "His life has been cut tragically short, it is difficult to comprehend that seeing your son head off for school in the morning would be the last time that we would see that handsome face."

They said the 15-year-old had "an uncanny ability to make you laugh, making it sometimes difficult to be serious with him".

He also had an older sister and brother, they said.

"Mohanad had many friends, he was loyal and often played the class clown, simply to see them laugh," the family added.

"Mohanad deserves to be remembered for the young man who was loved by his family, and loved big in return, not as the boy whose life was taken with no thought or reason."

Police are continuing to investigate the stabbing and have urged anyone with information about the attack to come forward.

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In central London, on land the size of seven football pitches, sits a mansion called Winfield House - the official residence of the US ambassador to the UK.

It may be a stately home but through the years it's been known to throw one hell of a party, especially on 4 July, America's Independence Day. This year's celebration saw Nile Rodgers & Chic headline the building's lawn for thousands of people.

Fashion's elite, sports stars and wartime leaders have all been entertained here. Even in 1825 when the original site was built, according to Winfield's official website, its primary use was for entertainment.

President Donald Trump is spending the first night of his state visit at the 35-room mansion. The Trumps also stayed there in 2019, as did the Bidens and Obamas previously.

"It's not just the home of the ambassador, but it's also a centre of diplomatic hospitality," says Stephen Crisp, formerly the property's head gardener, who worked there for 37 years until his retirement last year.

One thing Winfield isn't, is a tourist attraction. Located inside Regent's Park, it's exclusive and takes planning to get inside. Friends of Regent's Park previously arranged tours of the grounds - but so far this year the ambassador has not granted permission.

From the road outside, the house cannot be seen. It's shrouded in woodland and is very private for central London.

"It's really, really difficult to get in there. I regard it as a feather in my cap that I actually managed to get in," says Viv Ward, Friends of Regent's Park's event manager. He calls the house "magnificent" and is audibly in awe of the grounds.

Tours of Winfield only allow you to see the ground floor, which is basically a "very posh" area for receptions, and the gardens. The first floor is home to the personal apartments of the ambassador.

As a home and the venue of most American receptions, schedules are tight. "It wasn't a case of we would like to come on this date and this time. It was just, you will be allowed to come here on this day," Mr Ward says.

The property boasts the second-largest private garden in central London, says Mr Crisp. It's home to a lawn, paved walkways, sculptures - and there's also space for helicopters to land.

Socialite and heir to the Woolworths fortune, Barbara Hutton, sold Winfield to the US government for a mere dollar in 1946 in an offer described by the then-president Harry S Truman as "most generous and patriotic".

Hutton had bought the house 10 years earlier after it was partly destroyed in a fire. The Crown Estate Commission gave her permission to tear it down and rebuild in the iconic red brick Georgian style that remains today.

She named it after her grandfather, Frank Winfield Woolworth, the founder of the Woolworth shopping chain.

With World War Two about to erupt and her second marriage not going particularly well, Hutton returned to America with her son in 1939. It would later be revealed this is when she met her next husband - actor Cary Grant - who is said to have stayed at the mansion with her.

During the war, Winfield was commandeered by the Royal Air Force balloon barrage unit with officers reportedly playing football in the gardens.

Hutton returned to London to see what was left of it at the end of the war - and after the Germans' bombs. She called her lawyer and requested it be handed over to the US government for repairs - and it's been used as the official residence of ambassadors ever since.

History is in the walls of Winfield. The original building was called St Dunstan's, and according to Friends of Regent's Park, was used for blind veterans of World War One. A charity of the same name still exists today.

Speaking about US presidents, Mr Crisp says: "At some point they all come, at least once." He explains he met Trump and his wife Melania during their previous state visit in 2019, which was "a little bit surreal". They dined at the property with Queen Camilla and King Charles III before he ascended to the throne.

An iconic image of Mikhail Gorbachev - the last Soviet leader - and US President George W Bush may be one of the most famous moments from the house. The pair held a joint news conference there at the G7 summit in 1991.

Politicians have long used it for key moments, including international summits, grand state dinners and bringing together wartime leaders.

Security detail for presidential visits is secure information - often never released. But Mr Ward shares a glimpse into the daily routine at the house.

"The security is unbelievable, I mean for example I used to have to send the embassy a list of attendees," he adds, saying photo ID had to be shown to the armed presence on the gates of Winfield.

And if you want to leave early? An armed officer has to escort you off the premises.

Winfield House has hosted many varied events, says Mr Crisp.

There have been performances by Take That, Duran Duran, the Foo Fighters, Ed Sheeran and Bastille, he says, sometimes in the garden and sometimes in the house.

It's also been home to sporting events with the Duke of Sussex attending an Invictus Games reception there. Michelle Obama got stuck in with a sports day event, even doing the tug of the war alongside some famous spectators.

Fashion royalty has also hit the corridors of Winfield. Former Vogue boss Alexandra Shulman co-hosted a London Fashion Week opening party with the ambassador at the time. A Spice Girl was spotted too.

Some of the events would involve "thousands" of guests, Mr Crisp says, with the 4 July parties typically gathering 3,000 or 4,000.

It's a bit of an escape.

"You would never know you're in the centre of the London," Mr Ward says.

But what's the most disappointing part of the house? (Disappointing feels like a stretch.) Mr Ward says its driveway is "rather modest" compared to the rest of Winfield.

"It's big enough for big limousines but you couldn't get a brigade of guards walking up and things. It's not like the Mall."

Additional reporting: Grace Dean