President Trump was greeted by the King and Queen as well as other senior royals at Windsor Castle.
It is his second state visit to the UK and is accompanied by the usual pomp and pageantry.
For the second time, Donald Trump is greeted by a British monarch on a state visit
The First Lady, Queen and Princess of Wales chatted in a separate group nearby
President Trump shook hands with King Charles and the two were in deep conversation outside Windsor Castle
The Trumps, the King, Queen and Prince and Princess of Wales then stepped into the royal carriages
King Charles and President Trump, were first in the procession, travelling in the Irish State Coach
Donald Trump earlier disembarked from his helicopter, Marine One, alongside First Lady Melania Trump
The pair were greeted at Windsor Castle by the Prince and Princess of Wales
Marine One could be seen as it headed to Windsor
Earlier bands played during the final preparations for the ceremonial greeting and troop inspection by the King and President Trump