US President Donald Trump will arrive in the UK this evening for his second state visit.
During his stay, Mr Trump will visit Windsor Castle and the Prime Minister's country retreat Chequers.
The visit comes less than a week after the UK's Ambassador to the US, Peter Mandelson, was sacked due to emails he sent to the convicted sex offender Jeffrey Epstein.
Mr Trump has also come under pressure over his links to Mr Epstein.
This is a historic occasion, given Mr Trump is the only world leader to receive an invitation for a second state visit.
Back in 2019, Mr Trump was hosted by the late Queen Elizabeth.
This time, Mr Trump will spend much of his time at Windsor Castle, as Buckingham Palace is undergoing renovations.
Unlike his predecessors Barack Obama, Bill Clinton and Ronald Regan, Mr Trump will not be afforded an opportunity to address parliament, as it is in recess.
Mr Trump and his wife Melania will arrive in London this evening.
A number of protests by the Stop Trump Coalition have been organised to coincide with the visit.
Tomorrow will be dedicated to royal engagements at Windsor, while on Thursday Mr Trump will visit the Prime Minister at Chequers.
UK Prime Minister Keir Starmer has made significant efforts to build close ties with Mr Trump. He will hope that this state visit only serves to strengthen the so-called "special relationship".