During the early part of his work life Derrick worked in a range of sectors including the not for profit sector. The majority of this time he held senior management roles. For the last thirty years he has worked as a management consultant, partly with the Coverdale Organisation, an international management consultancy, and more recently as an independent consultant. Throughout this period he has worked in a wide range of organisations. His main specialism has been enabling businesses from all sectors to work more effectively and efficiently. Throughout this time his personal academic interest has been in the field of Applied Behavioural Science (M.A) as applied to business. In recent time he has helped Data Orchard become established as a company finally agreeing, on a very short contract, to become chairman of the Board as it managed a significant structural reorganisation of Board and company.