Valentine is heavily involved in both police and community service and is an experienced practitioner in community engagement, investigation, intelligence and media relations.

For over 16 years, he was the operational manager of Crime Stoppers Victoria at state, national and international levels. Valentine managed and coordinated the international media and community information support project for the 2006 Commonwealth Games, and later in 2009 as field commander (CSI – Lyon France) on a global operation, working alongside international agencies coordinated by Interpol. In 2011, he was the operational driving force behind Australia's inaugural national fugitive manhunt, Operation ROAM.

Val is called upon by AES clients to provide advice in areas such as how to manage potential risk relating to criminal activities, breach of ethics and development of policy, as well as whistleblowing, and how to deal with unethical behaviour by members.