Procession of Queen Elizabeth II’s Coffin Underway in London

LONDON (AP) — Queen Elizabeth II left Buckingham Palace for the last time Wednesday, her coffin borne by a horse-drawn gun carriage and trailed by grieving family members during a 38-minute journey to the Houses of Parliament, where it will lie in state until the funeral early next week.

With the Royal Standard and State Crown resting on top of the coffin and artillery firing salutes at one-minute intervals, the solemn procession was designed to underscore the Queen’s 70 years as head of state as the national mourning process shifts to the grand boulevards and historic landmarks of the U.K. capital.

King Charles III, his sons Princes William and Harry and other members of the royal family walked behind the gun carriage. Big Ben’s bells tolled and a gun salute boomed as the coffin proceeded along The Mall to the martial strains of a military band.

The coffin was draped in the Royal Standard and topped with the Imperial State Crown – adorned with almost 3,000 diamonds – and a bouquet of flowers.

Crowds of mourners massed along the flag-lined road, the Mall, outside the palace for the procession from the monarch’s official London residence to the historic Westminster Hall at Parliament.

Thousands more were standing or sitting in line along the banks of the River Thames waiting their turn to file past the coffin when it lies in state for four days before the Queen’s state funeral on Monday.

The crowds are the latest manifestation of a nationwide outpouring of grief and respect for the only monarch most Britons have ever known, who died at her Balmoral summer retreat on Thursday at age 96, ending a 70-year reign.

London’s Heathrow Airport halted flights to prevent overhead planes disturbing the procession.

The airport said in a statement that the changes would “ensure silence over central London as the ceremonial procession moves from Buckingham Palace to Westminster Hall.”

Troops involved in the procession have been preparing since the Queen died. So have the horses of the King’s Troop Royal Horse Artillery.

Sgt. Tom Jenks, from the King’s Troop Royal Horse Artillery, said that the horses have undergone special training, including how to handle weeping mourners, as well as flowers and flags being thrown onto streets as the procession passes by.

Since the early morning, people staked out prime viewing positions behind metal barriers along the Mall and other streets along the route. They stood or sat on folding chairs, umbrellas at the ready, takeout coffees in hand.

Crowds have lined the route of the Queen’s coffin whenever it has been moved in its long journey from Scotland back to London.

On Tuesday night, thousands braved a typical London drizzle as the state hearse, with interior lights illuminating the sovereign’s flag-draped casket, drove slowly from a military air base into the heart of London.

Earlier, in Edinburgh, some 33,000 people filed in silent respect past her coffin as it lay for 24 hours.

Hundreds of thousands are expected to do the same in London when the Queen lies in state at the 900-year-old Westminster Hall, the oldest building in Parliament, for four days before her state funeral on Monday.

The hall is where Guy Fawkes and Charles I were tried, where kings and queens hosted magnificent medieval banquets, and where ceremonial addresses were presented to Queen Elizabeth II during her silver, golden and diamond jubilees.