Nobody walks in front of the queen — not even her husband.
OK, we actually kind of love this one: as the husband of the monarch, Prince Philip is required to walk a few steps behind the queen at all times. And whenever the family takes part in a procession or official event, they must enter and be seated in Order of Precedence — the queen and Prince Philip; Prince Charles and the Duchess of Cornwall; Prince William and Kate Middleton; and so on as it applies to the order of succession to the throne. Talk about someone always having your back!