Boris Johnson has become the latest Prime Minister to stand in front of the door of 10 Downing Street and tell the world the Queen has invited him to form a government.
Here, PA looks back at an age-old ritual in UK politics which sees the removal vans clear out the belongings of the former occupant of Number 10 before leaving the scene clear for the new prime minister.
Homburg hats are no longer in fashion and police uniforms may have changed, but the men and women who have gone before have always allowed the media to immortalise the moment.
Then prime minister David Lloyd George, right, and a future occupant Winston Churchill leaving 10 Downing Street for the House of Commons on February 10, 1922 (PA)
Ramsay MacDonald in the garden at Number 10 in 1932 (PA)
Winston Churchill on his way to a War Council meeting (PA)
Sir Anthony Eden, on his first visit to 10 Downing Street as prime minister, waves to the crowd on April 7, 1955 following the departure of Sir Winston Churchill (PA)
Harold Wilson, with wife Mary, waves to the crowd as he arrives at Number 10 on October 11, 1974 following one of his election victories (PA)
Margaret Thatcher invoked St Francis of Assisi after becoming the first woman to take the role on May 4, 1979 (PA)
Tony Blair waves to the crowd with his wife Cherie and their children Nicky, Kathryn and Euan as he arrived at 10 Downing Street in May 1997 for a long stint there. Baby Leo came along while he was in residence (PA)
David Cameron and his wife, Samantha, on the doorstep of 10 Downing Street as he became the head of the coalition government on May 11, 2010 (Lewis Whyld/PA)
Boris Johnson waves to the crowd moments before stepping behind the famous black door for the first time as Prime Minister (Dominic Lipinski/PA)
