Queen Elizabeth updates: State funeral ends 11 days of ceremonies

Queen Elizabeth’s four children -- King Charles, Princess Anne and Princes Andrew and Edward -- are walking directly behind the coffin during the procession.

Walking behind the queen’s children are: William, the Princes of Wales; his brother Harry, the Duke of Sussex; and the brothers’ cousin, Peter Phillips. This marked the second time since the queen’s death that Princes William and Harry were seen in public together amid reports of tension between the brothers.

Several spouses of the children and grandchildren are traveling by car: Camilla, the Queen Consort; Kate, the Princess of Wales; Meghan, the Duchess of Sussex; and Sophie, the Countess of Wessex.

Members of the queen's close personal staff are also participating in the procession.

Londoners have lined the route and were seen wiping away tears as they watched the slow and solemn procession.

Big Ben is tolling at one-minute intervals and minute guns are firing from Hyde Park.

On Wednesday, a procession will take Queen Elizabeth’s coffin from Buckingham Palace to Westminster Hall, where it will lie in state until her funeral on Monday, Sept. 19.

The procession, which begins at 9:22 a.m. ET, includes King Charles and members of the royal family.

The coffin will arrive at Westminster Hall at 10 a.m. ET which will be followed by a short service.

Then Westminster Hall will open to the public to allow them to pay their respects as Queen Elizabeth lies in state.

Heathrow Airport flights will be delayed so they do not disturb the Queen's coffin procession on Wednesday. The west London airport said in a statement that "out of respect" for the mourning period it will be making "appropriate alterations to our operation".

These include flights being disrupted between 1:50 p.m. and 3:40 p.m. on Wednesday to "ensure silence over central London as the ceremonial procession moves from Buckingham Palace to Westminster Hall."

The procession of Queen Elizabeth II's coffin on Wednesday will leave from Buckingham Palace at 9:22 a.m. ET and arrive at Westminster Hall at 10 a.m. ET, a palace spokesperson said.

Members of the royal family who will be in the procession include King Charles III; Prince Andrew, Duke of York; Anne, Princess Royal; Prince Edward, Earl of Wessex; William, Prince of Wales; and Harry, Duke of Sussex, among others, the spokesperson said.

Other members of the royal family will travel to the hall by car, including Camilla, Queen Consort; Sophie, Countess of Wessex; Catherine, Princess of Wales; and Meghan, Duchess of Sussex, according to the spokesperson.

Once they arrive at Westminster Hall, the archbishop of Canterbury will lead a short service. The queen's lying in state will begin at noon ET.