Dudley has gained the International Compliance Diploma to supplement his substantial work experience, and has been elected as a Member of the Compliance Institute, the Association of British Investigators and the Isle of Man Association of Corporate Service Providers.

Dudley retired from the Isle of Man Constabulary in 2001 having served a total of 39 years. On his retirement, Dudley had reached the rank of Detective Chief Inspector and was in charge of CID, Serious Crime Squad, Special Branch, Drug Squad, Scenes of Crime, Family Protection Unit and the Financial Crime Unit.

In February 2005 Dudley became a member of the Parliament of the Isle of Man, having been elected to Tynwald as a Member of the Legislative Council, the Upper House of the Parliament, a position he held until his retirement in 2013.