the Queen's funeral been planned since the 1960s, but royal staff and officials run dress rehearsals every year to ensure they're ready for the sad day.
Plans must also be in place for the funerals of other senior royals, such as the Queen's husband Prince Philip, and her son Prince Charles (who is next in line to the throne).
When a member of the Royal Family dies, the news must be quickly shared with family members, officials and the military - before it can be broken to the public.
To do this without any leaks or confusion, staff have devised a code word system.The Queen's death will be referred to as "Operation London Bridge", while Prince Philip's will be "Operation Forth Bridge".Prince Charles' death will be "Operation Menai Bridge"..
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