Harold Roxbee Cox, Baron Kings Norton (6 June 1902 – 21 December 1997) was a British aeronautical engineer.

He was notable for his contributions to British industry, particularly aeronautical engineering, and for his part in the establishment of Cranfield University.

[4] Cox left Kings Norton Grammar School (now King's Norton Boys' School) at the age of 16 and joined the Aircraft Design Department of the Austin Motor Company at Longbridge, which was at that time, designing and building light aircraft such as the Whippet and Kestrel.

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.

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.

[6] When Cox was honoured with a life peerage on 22 June 1965, he took the title Baron Kings Norton, of Wotton Underwood in the County of Buckinghamshire[7] and his chosen motto, "Precision and Tolerance", was highly appropriate.

He believed that there shouldn't be divisions between disciplines: the arts and sciences, technology and management, commerce and education.

In July 1927 Cox married (Doris) Marjorie (1902–1980), eldest daughter of Ernest Edward Withers, an electrical engineer, of Northwood, Middlesex (now part of the London Borough of Hillingdon).