He is the Senior Military Adviser to the UK Department for International Trade Defence & Security Exports.

[1] Maddox was born in Middlesex and later attended Clark's Grammar School in Southend-on-Sea.

[2] He rose steadily through the ranks in a variety of roles and in 1988 studied at the Royal Naval Staff College at Greenwich, after which he became personal staff officer to the Air Officer Commanding No.

Throughout the 1980s and 1990s, Maddox held various staff jobs and undertook operational tours in Germany and the Falkland Islands.

[4] Maddox served as Chief of Staff (Operations) at RAF Air Command[5] until he retired from RAF service in July 2009 and was succeeded by Air Vice Marshal Richard Garwood.