The Queen's coffin will be carried back to the gun carriage before the procession steps off from Westminster Abbey at 12.15 pm.
The procession will move through Broad Sanctuary Parliament Square (south and east sides), Parliament Street, Whitehall, Horse Guards including Horse Guards Arch, Horse Guards Road, The Mall, Queen's Gardens (south and west sides), Constitution Hill, and Apsley Way, before arriving at Wellington Arch at 1:00 pm.
The coffin will be lifted off the gun carriage and placed in the state hearse, which will depart for Windsor as the parade gives a royal salute and the national anthem is played.
The King and the Queen Consort, the Prince and Princess of Wales, and other members of the royal family will depart for Windsor by car.
The hearse will approach Shaw Farm Gate in Albert Road, Windsor, and join the procession, which will have been formed up and in position to step off at 3.10 pm.
The service will mark the end of public ceremonial arrangements and will begin at 4:00 pm.
The door of St George's Chapel will open for the congregation at 3.20 pm, with members of the royal family not in the procession arriving for the service at 3.25 pm.
The hearse will process along Albert Road, Long Walk, Cambridge Gate, Cambridge Drive, George IV Gate, Quadrangle (south and west sides), Engine Court, Norman Arch, Chapel Hill, and the Parade Ground.
The procession, which will have been joined by the King and other family members on the north side of the quadrangle as it passes into Engine Court, will arrive at the West Steps of the chapel in Horseshoe Cloister at 3.53 pm.
The bearer party will lift the coffin from the hearse and it will be carried in procession up the steps into St George's Chapel before the committal service.
It is not known how long the service will last.
The King and members of the royal family will depart from the Galilee Porch for Windsor Castle once the service concludes.
The Dean of Windsor will conduct a burial service attended by the King and members of the royal family at 7.30 pm.
The Queen will be buried with the Duke of Edinburgh at King George VI Memorial Chapel.
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