US President Donald Trump will arrive at Stansted Airport this afternoon, just days after he said the country was in "turmoil".
It is Mr Trump's first visit to the country since his election in 2016.
His political statements and views, along with his personal life and his businesses have always received considerable media attention.
Ahead of his visit, here are some interesting facts that you might not have known before.
- Donald Trump will be accompanied by as many as 1,000 staff, a motorcade and multiple helicopters during his UK trip
- Air Force One can act as a mobile command centre in the event of an attack on the United States
- Bottles of the president's blood type are carried on board Air Force One in case of a medical emergency, and a satellite phone enables communication to be maintained from anywhere in the world
- The aircraft has 4,000 square feet of floor space, including a Presidential suite with a large office and conference room, a medical suite that can be used as an operating room and two food preparation galleys that can feed 100 people at a time
- Staff typically involved in an overseas trip include Secret Service post-standers, military communications specialists and White House aides
- The president has at his side at all times a White House doctor and one of five rotating military aides who carry the nuclear "football" - equipped with communication tools and a book with prepared war plans
- The words "United States of America", the Seal of the President of the United States and the American flag are all visible on the outside of the plane, making it instantly recognisable
- There is always a group of 13 members of the press on such visits, including three wire reporters, two print reporters, four photographers, a three-person television crew, and a radio reporter
- A number of presidential helicopters, either VH-3D Sea Kings or VH-60N White Hawks - which are known as Marine One when the president is on board - are also brought on overseas trips
- The Marine One helicopter is fitted with communications equipment, anti-missile defences and hardened hulls