The Princess of Wales and celebrities attended the King's star-studded state banquet on Tuesday, where Emmanuel Macron paid tribute to the late Queen Elizabeth II.
On the first day of Mr Macron's state visit, King Charles gave a toast in French and said the three-day trip was another chance to "celebrate a deep and enduring friendship".
"What's possibly the most remarkable thing is the way in which the speciality of one country is part of the story of the other," the monarch said.
"For centuries, our citizens have admired one another. We've made each other laugh, and we've imitated one another."
After the King's speech, Mr Macron told him France had a "real affection for your mother" Queen Elizabeth II, adding he believed the feeling was "reciprocal".
"She was your queen," he said. "To us, she was the Queen."
He capped off his speech - which repeated his calls for closer relations that he made earlier in the Palace of Westminster - by saying: "In honour of the United Kingdom, of this entente amico that unites our two fraternal peoples in an unwavering alliance.
"Long live the United Kingdom of Great Britain and Northern Ireland! Long live France!"
The Princess of Wales also made her first appearance at a state banquet in almost two years, sitting next to the French president.
She last made an appearance at a grand royal dinner in November 2023 in honour of the South Korean president. It comes after she opened up about her "rollercoaster" cancer recovery last week.
Also in attendance were Sir Mick Jagger, frontman of The Rolling Stones, who was joined by his fiancee Melanie Hamrick, and Sir Elton John, who was accompanied by his husband David Furnish.
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Meanwhile, it was announced that the Bayeux Tapestry, depicting the Norman conquest of England, will return to the UK for the first time in more than 900 years, and will feature in an exhibition from September 2026 to July 2027.
Mr Macron joked ahead of the state banquet that negotiations to bring the 11th-century artwork back to the UK took longer "than all the Brexit tests". Talks on a loan had started as early as 2018.
(c) Sky News 2025: In pictures: Princess of Wales, Elton John and Mick Jagger at King's state banquet for Macron
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