Donald Trump's state visit to the UK in pictures

President Trump has embarked on the first day of his three-day UK state visit, joined by his wife, First Lady Melania Trump.

Mr Trump was welcomed with a 41-gun salute as he met the Queen at Buckingham Palace.

Here are pictures from the visit, starting on Monday.

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Image caption After landing at Stansted Airport, President Trump and First Lady Melania Trump appeared on the steps of Air Force One, moments after Mr Trump tweeted comments about London Mayor Sadiq Khan, calling him a "stone cold loser" and accusing him of being "nasty"

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Image caption The tweets followed recent criticism of Mr Trump from Mr Khan, who said the UK should not be "rolling out the red carpet" for the US president during the trip

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Image caption Foreign Secretary Jeremy Hunt (second left) greets Mr Trump on the tarmac at Stansted. The president will also meet Prime Minister Theresa May during his visit

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Image caption Members of the public watch the Changing of the Guard outside Buckingham Palace shortly before Mr Trump's arrival

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Image caption Camilla, Duchess of Cornwall (second left) and Prince Charles (second right) greet President Trump and First Lady Melania Trump at Buckingham Palace

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Image caption Queen Elizabeth II greets President Trump at Buckingham Palace

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Image caption Mr Trump inspects an honour guard during the welcome ceremony

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Image caption (left to right) First Lady Melania Trump, Queen Elizabeth II, President Trump, Prince Charles and Camilla, Duchess of Cornwall stand on the steps of Buckingham Palace as the US national anthem plays during the welcome ceremony

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Image caption After a private lunch, Mr Trump and the First Lady were shown items from the Royal Collection (the Royal Family's collection of art) in the palace's picture gallery

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Image caption The items on display included those that had a connection to US history

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Image caption Prince Harry, seen here with Ivanka Trump, also viewed the displayed items

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Image caption The Duke of York then accompanied Mr Trump and the First Lady to Westminster Abbey where they placed a wreath on the grave of the unknown warrior

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Image caption Before leaving they signed Westminster Abbey's distinguished visitors' book

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Image caption Heading to Clarence House for afternoon tea, Mr Trump gives the thumbs-up from his armoured limousine, which is known as The Beast

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Image caption The president and first lady share a joke with Duke and Duchess of Cornwall at Clarence House ahead of a state banquet at Buckingham Palace

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Image caption The president's motorcade drives down the Mall - which features both US and UK flags for his trip - after leaving Clarence House

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Image caption Ahead of the state banquet at Buckingham Palace, protestors gathered outside

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Image caption The white tie and tiara event was held in the ballroom at Buckingham Palace

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Image caption The Duchess of Cambridge wore her sash and star of the Dame Grand Cross of the Royal Victorian Order for the first time

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Image caption Donald Trump used his state banquet speech to describe the Queen as a "great, great woman"

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Image caption The Queen raised a toast "to our continued friendship" between the UK and US

Photos are copyright.