Our Directors

Ken Ford


Ken joined the Board in 2010. He was previously Chief Executive of Teather & Greenwood, the investment bank, and brings over 36 years of City experience to the Company, including a strong understanding of shareholder value, strategic planning and corporate transactions. His previous roles include Aberdeen Asset Management, Morgan Grenfell and Wedd Durlacher. Ken is currently Chairman of AIM-listed Gear4music, and is a Fellow of the Chartered Securities Institute.

Mike Creedon

Chief Executive Officer

Mike joined the Board in 2010. A Chartered Certified Accountant with an MBA from Henley Management College, Mike brings to SDI considerable experience of working within quoted companies and technology businesses, and fundraising, mergers and acquisitions. In particular, he has recent experience of AIM-listed technology companies.
Previous Finance Director posts include Ninth Floor plc and Ideal Shopping Direct plc.

Jon Abell

Chief Financial Officer

Jon joined the Board in July 2018 and has over 35 years of business experience. Prior to joining SDI he was Divisional VP of Finance, Electronic Instruments Group at Ametek, Inc. where his principal duties include performance management, M&A, business controls and accounting for several scientific and industrial instrument businesses.
Jon started his career as a financial analyst and then management accountant for various industrial companies in the UK and Italy, before undertaking his MBA at Columbia Business School. He subsequently went on to senior financial management roles in Germany, the Netherlands, USA and UK including at Philips Electronics and Broadcom Inc.

Isabel Napper


Isabel joined the Board in February 2017 and has more than 25 years’ experience in advising clients in the technology and healthcare/life science areas, both public and private sector, leading on business development and managing regulatory issues, governance risk and strategic change. Isabel was previously a Partner at the law firm Mills & Reeve where she acted as legal adviser and company secretary to a number of boards. Isabel is also a non-executive director at Tristel plc, Keystone Law Group plc and Skillcast Group plc. Isabel chairs SDI’s Remuneration and Nominations committees and is a member of the Audit  Committee.

David Tilston


David joined the Board in July 2017. He has over 30 years’ experience in finance functions within public companies. Most recently, David held the role of Interim Group CFO of Northgate plc, and before that Interim Group CFO at Consort Medical plc. Previously, David held senior finance roles at Innovia Group, Mouchel Group plc, Findel plc, SABMiller plc and SThree plc. David chairs the Audit committee and is a member of the Remuneration and Nomination committees. David is also a non-executive director at EnSilica plc.