Ex King Prajadhipok of Siam , who now uses the title Prince of Sukhodaya is rapidly becoming an efficient airman at Heston Aerodrome , near London . The ex King ' s modern outlook is well known and was evident before he abdicated and came to live in England . His interest in aviation is now spreading to other members of his family , and when he goes up with his instructor , Flying Officer A M Glover , at Heston , the ex King ' s nephew , Prince Chakraband and Prince Varanand , like to watch . Photo shows the ex King of Siam in the cockpit before a flight at Heston Aerodrome . 28 August 1936 . Original caption from negative