As the Queen died in Scotland in her Balmoral home, rather than in London, another protocol was triggered, called Operation Unicorn. This entails the Queen's coffin initially being taken on a special train to Edinburgh where she will be laid to rest in state at the Palace of Holyroodhouse. Her coffin will then be taken to St Giles' Cathedral on the Royal Mile for the public to pay their respects.
The Queen's coffin will then be transported, via the Royal Train, to Buckingham Palace in London. Should the coffin not be able to travel by train, the trip will be made by air in a mission code-named Operation Overstudy.