President Donald Trump has arrived at Buckingham Palace as he marks the start of his three-day state visit to the UK.

Trump was greeted by the Queen on the West Terrace of Buckingham Palace, her official London residence.

Prince Charles and his wife Camilla were the first members of the royal family to meet Trump as he left his official helicopter, which landed in the grounds of the palace.

The American national anthem was played as the royal party and their guests stepped from the palace, and Trump was invited to inspect the guard of honor.