 Due to the extensive wartime pressures upon de Havilland's production facilities for existing aircraft type, English Electric Aircraft undertook production of the Vampire at their Preston, Lancashire factories instead; the company would go on to produce the majority of the aircraft.Only about half a dozen production aircraft had been built by the end of the Second World War, although it did not result in the type becoming a victim of the extensive post-war cutbacks that were soon implemented, which had terminated the production of many existing aircraft along with development work upon several more.De Havilland initiated a private venture night fighter, the "DH.113" intended for export, fitting a two-seat cockpit closely based on that of the Mosquito night fighter, and a lengthened nose that accommodated an AI Mk X radar.