In a report published by The Guardian, author Sam Knight describes the plans known as "Operation London Bridge". These plans include a series of events that will take place before the Queen is laid to rest - the day and the nine days that follow it have been completely planned out for decades.
The report is detailed and lengthy, but an interesting read.
Read the full report here: Operation London Bridge: the secret plan for the days after the Queen's death
David Bailey/Press Association Images