Alongside his wife Melania, the US President greeted Queen Elizabeth II at Windsor Castle on Friday as part of his two-day working visit to the UK.
Trump received the Guard of Honour to the sound of the US national anthem, before watching the scarlet-clad troops march around the Quadrangle.
The 72-year-old was then invited inside the royal residence to have tea with Britain's longest-reigning monarch.
Later on Friday, the President and his wife flew to Scotland where they will spend their weekend at Trump's Turnberry golf resort.