Career
Ruddock joined the Royal Air Force in 1974. He was appointed Officer Commanding the Operations Wing at Royal Air Force Coningsby in 1993, Assistant Director of the Defence Intelligence Staff in 1996, Station Commander at Royal Air Force Coningsby in 1999 and then Air Comodore Defensive Operations at Headquarters Number. 1 Group in 2000. He became Director of Staff Duties in 2002 and Air Secretary in 2004 before moving on to be Director-General of the Saudi Arabia Armed Forces Project in 2006.
He retired in 2011 and became Business Development Director at Lockheed Martin United Kingdom.