Alex Henshaw had the luck to grow up in the '20s and '30s during the golden age of flying. The Blue Riband of flying in the British Isles between the two World Wars was the King's Cup: Henshaw set his heart on it, developing a technique of racing which extracted the very maximum from his aircraft: first the Comper Swift and then the DH Leopard Moth. Parallel with his search for speed was an obsess...