The Route of the Coronation Procession has now been announced, and is much shorter than in 1953.
From Buckingham Palace down the Mall to Trafalgar Square, then down Whitehall to Parliament Square and Westminster Abbey, the same route back again.
Outward in the Diamond Jubilee state coach, returning in the Gold State Coach, which is almost 200 years old.
The Diamond Jubilee coach incorporates pieces of wood from historic ships and buildings, including HMS Victory, the Mary Rose, Balmoral Castle, Canterbury Cathedral and Westminster Abbey.
The time of the service is now announced, at 11am.