Horses and troops ready the Queen's cortege

STORY: The rehearsal included members of the King's guard, household cavalry, and Royal Air Force.

The cortege will see the Queen's body borne on a gun carriage from Buckingham Palace to Westminster Hall ahead of a period of lying in state.

The King and other members of the royal family will walk in silence behind.

The body will lie in state for four days until the day of the funeral, which is set to take place on Monday, September 19.