The remains of Elizabeth II, escorted by Princess Anne, were boarded on Tuesday evening aboard a royal plane and will be welcomed in the British capital by King Charles, before spending the night at Buckingham Palace, his residence. official during his 70 years and seven months of reign.
Earlier in the afternoon, the Queen's coffin left Edinburgh Cathedral under the emotional gaze of a crowd gathered to bid farewell to the Queen who died Thursday at the age of 96.
Big Ben and cannon shots
After prayers at the palace in the presence of the king, the queen consort and the royal family, a procession will take place in central London to carry the coffin, placed on a gun carriage, to the Palace of Westminster.
The King and members of the Royal Family will join in as Big Ben rings.
Cannons will also be fired from Hyde Park.
Around 1 p.m., the coffin will arrive at Westminster Hall and, placed on a catafalque, will then be guarded night and day by soldiers from units of the royal household.
The location will soon be open to the public.
Great restrictions to see the coffin
Hundreds of thousands of people are expected and the queue should wind for several kilometers.
Authorities asked the public to "dress appropriately to pay their respects" to the sovereign who died last Thursday at the age of 96, and warned that the wait could last hours or even the whole night.
The public will only be able to bring inside a small bag.
No food or drink other than a transparent, empty bottle of water will be accepted at security checks similar to those at airports.
No cooler, no folding chairs or sleeping bags, no animals, with the exception of dogs guiding the visually impaired or hearing impaired.
Then the Queen's state funeral will take place on Monday in the presence of some 500 foreign dignitaries and many crowned heads.
But Russia, Belarus and Burma were not invited.