US President Donald Trump (3R) and US First Lady Melania Trump (2R) greet Britain's Prince Charles, Prince of Wales (3L) and his wife Britain's Camilla, Duchess of Cornwall (2L), ahead of a dinner at Winfield House, the residence of the US Ambassador, where US President Trump is staying whilst in London, on June 4, 2019, on the second day of the US President's three-day State Visit to the UK.