Patrick is Managing Director of Systems Modelling Limited (sysmod.com) since 1981. His current focus is spreadsheet systems modelling and auditing services as well as training and development. He is occasional chair of the European Spreadsheet Risks Interest Group (EuSpRIG), a committee member of SoftTest Ireland, and a Fellow of the Irish Computer Society. He has advised two certification bodies on the content of a syllabus for a new certification in good spreadsheet practices. He is the author of “Spreadsheet Check and Control” (Systems Publishing, 2005, ISBN 190540400X) and the developer of the XLTest spreadsheet auditing Excel addin.