James McNaught-Davis

Managing Partner

James has been WHEB Partners’ Managing Partner since 2007. He leads the firm and chairs its investment committee.  James is a board member of Green Energy Group AS, PassivSystems Ltd and WEMS Ltd.  He is also a member of the British Venture Capital Association’s Energy and Environmental Technology Committee.

James has two decades of private equity investment experience, primarily in technology growth capital. This includes five years as a General Partner at Advent (2001-06) and five years at Warburg Pincus (1996-2001) where he became a Partner and Managing Director in 1999.

Prior to moving into private equity, James worked in the information technology sector as a senior executive at Misys Plc where he was responsible for M&A. Before Misys Plc, James spent most of the 1980s as an investment banker with Merrill Lynch and Schroders.

James has an MBA from the Wharton School, University of Pennsylvania, and an MA (Hons) from the University of Cambridge.

Portfolio Companies:  Watson Brown, Green Energy Group, PassivSystems, WEMS

Private Equity Special Advisors

Professor Geoff Randall OBE

Geoff is a non-executive director of two WHEB investee companies and a member of our Advisory Board.  He has 38 years’ experience at ICI, Zeneca & Astra Zeneca, where his final position was Director of Global EHS and Environmental Science and Technology Operations. Geoff has a PhD in Chemistry from University College London.

Ken Briddon

Ken has 10 years’ experience of chairmanships and non-executive directorships of private equity backed software and services businesses.  He spent three years as CEO of JBA Holdings PLC and eight years as Divisional Managing Director at Misys PLC.  Ken previously worked for Cypher Business Systems and Ericsson Information Systems.

Dr. Jan Verdenhalven

As Doctor of Biochemistry, Jan Verdenhalven has more than 25 years of experience in various senior management positions at internationally active chemical companies. His career began in 1985 as laboratory manager at Hoechst AG. In 1990 he moved to Management Consultant at McKinsey Company and returned in 1992 as Project Manager, Strategic Planning, and later Area Controller, Fine Chemicals, to Hoechst AG.

From 1995 to 2000, as member of the board of DyStar GmbH Co. KG, he was responsible for the global business area of dispersion color materials. Between March 2000 and March 2011 he worked at the SGL Group, initially as Manager of Corporate Controlling and Business Development, and since 2001 as Chairman of the global business area Carbon Fiber Composites.