Prince Philip's body will reportedly be moved when the Queen dies so they can be together forever.
The Duke's coffin will be placed in the Royal Vault at St George’s Chapel until the Queen passes.
It is understood he will then be buried with the Queen in the memorial chapel, their coffins interred together.
The date of the funeral, which will be a slimmed down affair as per Philip's wishes, is to be announced in the coming days.
Before the Duke of Edinburgh is laid to rest he will be examined by a member of the Medical Household, who will determine the cause of his death.
It is likely this will take place in their medical wing of Windsor Castle.
Then the Duke will be placed in a coffin which will be taken to the St George's Chapel within the Windsor Castle grounds, The Sun reports.
There he will lie at rest so that family members and invited guests have the opportunity to pay their respects to him, before he is taken to the Royal burial grounds at Frogmore Gardens.
Because Philip requested not to have a state funeral he will not lie in state - when a royal is placed inside a coffin so that members of the public can pay their respects.
Over the past century this has taken place in Westminster Hall, with King Edward VII the first British monarch to do so in 1910.
It is understood the Queen was at Prince Philip's bedside when he died at Windsor Castle and he spent his final days insisting on looking after himself, it is reported.
The Duke is said to have refused to go back to hospital, and died "peacefully" in his private apartment on Friday morning, just two months before his 100th birthday.
Britain's longest-serving consort was discharged from a London hospital on March 16 after a month-long stay in which he underwent heart surgery and was treated for an infection.
Later today, gun salutes marking the death of the Duke are to take place across the UK, in Gibraltar and at sea.
Saluting batteries will fire 41 rounds at one round every minute from midday in cities including London, Edinburgh, Cardiff and Belfast, as well as Gibraltar and from Royal Navy warships, the Ministry of Defence (MoD) said.
The public is being encouraged to observe the gun salutes, which will be broadcast online and on television, from home due to the coronavirus pandemic.
