 Commonwealth personnel were flown back to the United Kingdom some two weeks later, between 12 and 14 May, by aircraft of the United States Army Air Forces.After demobilization, Cowell was engaged in a number of business ventures until, in 1946, she founded a motor-racing team and competed in events across Europe, including the Brighton Speed Trials and the "Grand Prix" at Rouen-Les-Essarts.However her autobiography describes this as a time of great distress.