Pilot Officer Steele-Stebbing was a replacement pilot posted to the reformed Hornet Squadron after the evacuation from France. He received his nickname from Cattermole, who had met the new pilot's cousin Amanda before the war.
During the 7th September air raid, Steele-Stebbing was Yellow Two, serving as Moggy's wingman. Seconds after Hornet Squadron engaged the bombers at 16,000ft, a burst of gunfire shredded the cockpit of Steele-Stebbing's aircraft and severed his left arm below the elbow.  After leveling out at 3,000ft, Steel-Stebbing lost consciousness and crashed into the face of the South Downs. 
During the discusion about a possible German invasion, one of the other pilots remarks that the Germans would put 'Moggy' in Wormwood Scrubs, prompting Steele-Stebbing to state that the idea would get his vote.