barrages unscathed. In 1936 the Government created the Air Registration Board (ARB), a new body that would examine civil aircraft and issue certificates of airworthiness. With his experience in air safety from the Royal Aircraft Establishment, Cox became their Chief Technical Officer in 1938. Immediately war was declared, Cox was transferred back to Farnborough as Superintendent of Scientific Research and was then moved to the new Ministry of Aircraft Production in May 1940, as Deputy Director of Scientific Research. He dealt with a whole range of wartime projects, and was promoted to become Director of Special Projects in 1943. Cox had the special responsibility to work on jet engines. It was now Cox's job not to be the engineer, but the facilitator. The major aircraft and engine companies had each been conducting their own research into combining gas turbines and jet propulsion, but only Group Captain Frank Whittle's jet engine design worked. However, collaboration was now more important than trade secrets, with the government encouraging any efforts that could give the Allies any edge in conflict. Cox founded, and chaired, the Gas Turbine Collaboration Committee, helping to pool ideas and experience. In 1944 the Minister of Aircraft Production, Sir Stafford Cripps, nationalised Power Jets, making Roxbee both chairman and managing director. Power Jets was restyled again in 1946 as the National Gas Turbine Establishment (NGTE) with Roxbee as its Director. In 1948 Cox moved from the National Gas Turbine Establishment to become Chief Scientist at the Ministry of Fuel and Power, where he applied his gas turbine knowledge for the benefit of power generation. In 1954 Cox left the civil service to begin a second career in industry, and over the next twenty years he served on the boards of companies as diverse as the British Printing Corporation, the engineers Ricardo, and chemicals company Hoechst UK. He also chaired the packaging company Metal Box and the paint-makers Bergers, Jenson and Nicholson (now Berger Paints India), and was President of the Campden and Chorleywood Food Research Association for 33 years. Playing a wider role in business, Cox was involved with a number of industry bodies. He was the Chairman of the Council for Scientific and Industrial Research, and President of both the National Council for Quality and Reliability and the Institute of Marketing. He was Chairman of the National Council for Technological Awards from 1960 until 1964 then Chairman of its