Thousands of protesters are expected in central London as US President Donald Trump meets Theresa May for a working lunch at Downing Street after a business breakfast meeting at St James’s Palace.
But while the PM hosts Mr Trump, opposition leader Jeremy Corbyn will be gearing up to address demonstrators “in solidarity with those he’s attacked in America, around the world and in our own country”.
Meanwhile, the Trump Baby blimp will be inflated this morning and flown over Parliament Square.
Here’s a round-up of Mr Trump’s first day in the UK:
Donald Trump flies by helicopter from the US ambassador’s residence to Buckingham Palace, from where his motorcade then drives to St James’s Palace for a business breakfast meeting with senior UK and US business leaders.