The board

Keith Guy - Chairman
Mark Wells Non-Executive Deputy Chairman
Costas Pantelides - Managing Director
Steve Sanderson - Executive Director
Jeremy Asher - Non-executive Director
Robert Whitby-Smith Non-executive Director

Keith Guy FCGI, FREng, CEng, CSci, CEnv, FIChemE, ACGI, DIC Chairman
Following a 28-year career with Air Products which included both engineering and commercial Executive Management roles, Keith is now Chairman of Process Systems Enterprise Ltd, Impact Faraday Ltd and Process Integration Ltd, a Director of Spiritus Consulting Ltd, and a non-executive director of Webaspx Ltd.

He is a visiting Professor of Chemical Engineering at University of Bath and at Imperial College London and plays a full part in professional and public life; he is recent past Technical Vice-President of the Institution of Chemical Engineers and is currently a member of the Engineering Policy Board of the Royal Academy of Engineering, Chairman of the Exxon Teaching Fellowships Scheme and a Trustee of the Institution of Chemical Engineers Benevolent fund. He plays a regular part in industry-academic-government committees with a particular focus on sustainable development activities and low carbon energy systems.

Mark Wells Non-Executive Deputy Chairman
Mark Wells is Non-Executive Deputy Chairman of Coda plc, a supplier of financial software systems and also a Non-Executive Deputy Chairman of DICOM Group plc, a global leader of Intelligent Capture & Exchange solutions.

Previously Mark was Chairman and CEO of Image Metrics Plc, an image analysis software company. Prior to this he was Chief Operating Officer for Brainpower NV, a supplier of advanced financial analytical software and Managing Director UK and Vice president of Continental Europe for Dun and Bradstreet Software.

Costas Pantelides Managing Director
Costas Pantelides holds B.Sc.(Eng.) and PhD degrees from Imperial College and an MS degree from MIT. Over the past 20 years, he has worked on many aspects of both the theory and application of process modelling.

His research interests include the design and implementation of general-purpose process modelling tools, numerical methods for large-scale process simulation and optimisation and, more recently, the mathematics of molecular modelling. He is the author of over 100 papers in these fields. A professor of Chemical Engineering at Imperial College, he took leave of absence from the College to join PSE as its Technology Director in September 2000.

Costas's research since 1988 has led to the development of the gPROMS process modelling environment. Earlier, he had played a key role in the development of the SPEEDUP® software. He has also participated in the design and development of the gBSS process scheduling software.

Costas has acted widely as a consultant to international companies and is an active member of the Global CAPE-OPEN initiative for the definition of open standards in process simulation. He was the recipient of the 1998 Beilby Medal and Prize, awarded jointly by the UK Society of Chemical Industry, the Royal Society of Chemistry and the Institute of Materials, for his contributions to process systems engineering.

Steve Sanderson Executive Director
Steven Sanderson was appointed Finance Director and Company Secretary in January 2008.

He qualified as a Chartered Accountant with PricewaterhouseCoopers and has extensive experience at executive director level in the Information, Communications and Technology sectors. He was a director of VEGA Group Plc from 1994 to 2000 and of European Telecommunications & Technology Limited from 2000 to 2007.

His background includes supporting the financial management and control of fast-growth companies, public flotations, fund raising, acquisition and disposal activities. He is also currently a non-executive director of Triad Group Plc.

Jeremy Asher Non-executive Director
Jeremy has had a career embracing both consulting to and running a variety of enterprises. Following several years consulting with Mercer Management Consulting, he ran the global oil products trading business at Glencore AG, and then acquired, developed and sold the 200,000 b/d Beta oil refinery at Wilhelmshaven in Germany.

As CEO of PA Consulting Group, he oversaw PA's globalisation and growth from 2,500 to 4,000 staff, and negotiated and managed the integration of PA's acquisition of Hagler Bailly, Inc. Jeremy was also involved in setting up a number of PA's ventures including UbiNetics Ltd. and Meridica Ltd.

As well as being a director of PSE, Jeremy is also a director of Projector Holdings SA, a privately held oil and real estate investment group, and Chairman of SkyVision Holdings Ltd., a privately held satellite communications group.

He is a graduate of the London School of Economics and the Harvard Business School, where he received his MBA with high distinction in 1981, and is also a member of the London Business School's UK regional advisory board.

Robert Whitby-Smith Non-executive Director
Robert is a Director of Close Ventures, the UK's leading venture capital trust investor. He qualified as a chartered accountant with KPMG in their corporate finance division. Subsequently he worked for Credit Suisse First Boston and then ING Barings where he became Vice President of UK Investment Banking.