10 things you probably didn't know about the Queen

The Queen watches the Derby Festival at Epsom Racecourse. Credit: PAPerhaps the Queen's love of Scotland is why she likes bagpipes so much. Credit: PAThe Queen has no need for a passport. Credit: PAThe ballroom in Buckingham Palace is where the Queen hosts state banquets. Credit: PAThe Queen is a fan of the Post-it note game. Credit: PADiana and Charles kiss on the balcony of Buckingham Palace. Credit: PAThe Queen's tea of choice is Earl Grey. Credit: PAThe Queen and Prince Philip announced their engagement in 1947. Credit: PAThe spat may have taken place when the royal couple visited Australia in 1954. Credit: PA