A similar battle between Crown and State arose in 1997, following Princess Diana's sudden and tragic death.
After the Princess of Wales passed away in a car accident the Queen 'insisted' that the funeral be an intimate affair. However, the then Prime Minister Tony Blair, along with Prince Charles, agreed that Diana should be laid out at St. James's Palace with a public funeral held at Westminster Abbey.
As a result, Prince Philip had to have some serious words with the politicians at Downing Street, much to the delight of Queen Elizabeth.
According to Sky's political editor Adam Boulton in his 2008 book Tony's Ten Years: Memoirs of the Blair Administration, tensions over Diana's funeral arrangements got so bad between the royal family and Tony Blair, that Prince Philip finally exploded.
"The events of that week in September 1997 were very sad," Mr Boulton writes.
"But as the spinners from Downing Street came to Buckingham Palace and started to kick around what roles Harry and William should play in the funeral, the Queen had relished the moment when Philip had bellowed over the speakerphone from Balmoral: 'F*** off!'
"'We are talking about two boys who have lost their mother.'"
Remind us NEVER to get on Philip's bad side!