US President Donald Trump is in London again and he hasn't had the friendliest welcome from Londoners.
Mr Trump is here with other world leaders for a Nato summit. He arrived at Stansted last night on Air Force One before his motorcade was booed through Camden on the way to the ambassador's residence in Regents Park.
He stayed there most of the day before travelling to Buckingham Palace to be met at the gates by hundreds of protesters.
Among the protesters were NHS nurses, doctors and workers campaigning over potential risks to the NHS from a future US-UK trade deal.
The Queen, the Prince of Wales and the Duchess of Cornwall will formally greet the Nato leaders at the reception, which marks 70 years of the alliance.