Britain’s King Charles greeted Donald Trump on Wednesday as the US president’s second state visit to the UK began with pomp, intense security, technology investments and planned protests.
Mr Trump and his wife Melania arrived at Windsor Castle, home to British monarchs for almost 1,000 years, where the royal red carpet treatment included a carriage procession, gun salutes, a military flypast and lavish banquet.
The guest list ranged from members of the royal family to titans of business and technology.
Today, the US president is scheduled to visit the UK prime minister’s official country residence at Chequers, followed by a press conference.
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Guests raise their glasses for a toast at the banquet. Photograph: Andrew Caballero-Reynolds/WPA Pool/Getty Images 
Rupert Murdoch arrives to attend the state banquet. Photograph: Phil Noble/WPA Pool/Getty Images 
OpenAI chief executive Sam Altman (right) and Nvidia chief executive Jensen Huang (centre) at the state banquet. Photograph: Phil Noble/PA Wire
Queen Camilla and US first lady Melania Trump at Windsor Castle. Photograph: Kevin Lamarque/Pool/AFP via Getty Images 
English professional golfer Charley Hull (centre). Photograph:Evan Vucci-Pool/Getty Images 
US president Donald Trump stands beside King Charles. Photograph: Doug Mills/The New York Times 
GSK chief executive Emma Walmsley and US special envoy Steve Witkoff in Windsor. Photograph: Kevin Lamarque/AFP via Getty Images 
Princess Catherine and Prince William. Photograph: Aaron Chown-WPA Pool/Getty Images 
US first lady Melania Trump, US president Donald Trump, King Charles and Queen Camilla. Photograph: Doug Mills/The New York Times 
The Duchess of Gloucester walks with James Blair. Photograph: Aaron Chown/PA Wire 
Britain’s prime minister Keir Starmer speaks to Scotland’s first minister John Swinney. Photograph: Phil Noble/Pool/AFP via Getty Images
In addition to members of the royal family and senior members of the Trump administration, among those present included:
Tiffany Trump, daughter of US president Donald Trump;
Jensen Huang, head of Nvidia;
Tim Cook, chief executive of Apple;
Charles Woodburn, chief executive of BAE systems, British aerospace company;
Katherine Grainger, chancellor of the University of Glasgow, former gold medal-winning Olympic rower;
Ruth Porat, president and chief investment officer for Alphabet and Google;
Emma Walmsley, chief executive of GSK;
Jane Fraser, chief executive of Citi;
Richard Moore, chief of MI6;
Rupert Murdoch, founder of News Corp;
Sam Altman, chief executive of OpenAI;
Satya Nadella, chief executive of Microsoft;
Stephen Schwarzman, chief executive of Blackstone