John Chilcot
His honours included CB (1990), KCB (1994), and GCB (1998). He became a Privy Counsellor in 2004, and was a member of the Butler Review. He acted as "staff counsellor" to MI5 and MI6 from 1999 to 2004, "dealing with private and personal complaints from members of the intelligence services about their work and conditions".