Warren has a Bachelor of Arts (Honours) Cum Laude (1997) as well as a Law Degree (2000). He has experience in Civil Litigation, Property litigation, Commercial disputes, Land Claim matters and Administrative Law. Warren serves as a Director of the Maritzburg College Foundation, as well as Honorary Secretary of Maritzburg College Old Boys Association. He was Chairman of the Merchiston Preparatory School Governing Body and is the current Chairman of the Maritzburg College School Governing Body. His other interests include cricket and history.