Prince William and Kate Middleton are also known to break the royal rules when going abroad. The couple often fly with their three children, Prince George, Princess Charlotte and Prince Louis, which is against royal protocol as two heirs must not travel together in order to protect the royal lineage.
However, when William becomes King there will be one major difference in the way he travels compared to Kate – and there’s a rule that cannot be broken.
Currently, when the Duke and Duchess of Cambridge go overseas they must adhere to passport checks and go through immigration. But when William takes the throne, he will no longer have to do this. Instead, the rules that now apply to the Queen will apply to him.
As monarch, the Queen is the only person in the UK permitted to travel without a passport, and therefore William will not need one to board a flight when he becomes King.
