Castleton announced the appointment of Dean Dickinson as Chief Executive Officer, effective from 31 October 2016. Ian Smith will remain on the Board in an executive role as Deputy Chairman. Dean Robert Dickinson, was previously Managing Director of Advanced Business Solutions, where he led the impressive growth of the Public Sector and Enterprise division following the acquisition of COA Solutions in 2010. Dean has over 30 years operational experience in the software industry and was one of four directors at Walker Inc. responsible for an MBO backed by Alchemy Private Equity in 2002 to form a new business called Arelon.