Princess Flies to Greet The Queen, 51 To-Day - London. Princess Elizabeth walking to her plane at London Airport with Sir John D'albiac, Airport Commandant (seen left). She was flying to join the King and Queen who are spending their annual Scottish holiday at Balmoral. The Queen is celebrating her 51st birthday to-day. En-route to Deeside the Princess will make a short stay at Leuchars, Where she will inspect Scottish Auxiliary Air Squadrons. August 4, 1951.