 Cunningham commented that the machine would make an ideal night fighter.Although he was not familiar with the workings of the de Havilland Goblin turbojet, he recommended that if the cockpit was extended to allow for a navigator and the fuel tanks were enlarged, the type could make a formidable interceptor.While test-flying, Cunningham and Rawnsley carried out a sortie over Normandy from RAF Uxbridge.