In 2009 a would-be attacker killed eight people when he drove his car into crowds watching the queen and other members of the royal family in a national holiday parade.
It is reported that the queen likes a travel rug round her knees and used to wear a hard hat when watching stallions cover her mares (now she stands on a viewing platform, after health and safety advice).
Everyone but the Queen Mother has to stand up when the Queen enters a room - even her nearest and dearest, should they ever be sitting together watching Eastenders or playing Scrabble.