Thomas (Tommy) Cook
Chief Executive Officer
Ashleigh Greenan
Chief Financial Officer
Stephen Davidson
Non-Executive Chairman
Helen Kelisky
Non-Executive Director
Graeme Bissett
Non-Executive Director
Chief Executive Officer
Tommy is the founder and CEO of Calnex Solutions. He has over 40 years’ experience in telecoms test and measurement ranging from hands-on design and programme management of R&D projects through to leading business teams within the market segments in which Calnex currently operates. Tommy has participated in a number of Industry Standards forums during his career, including the ITU-T and MEF groups, and presented technical and market insight papers in industry forums.
Chief Financial Officer
Ashleigh qualified as a chartered accountant with Deloitte before spending 5 years at KPMG in transaction services. She has held senior finance and corporate development roles at Exova Group plc, the UK materials testing business, before joining Parsons Peebles Group Limited, where she was a director of a number of group companies and held the role of Chief Financial Officer until she joined Calnex in early 2020.
Non-Executive Chairman
Stephen Davidson is an accomplished director of both public and private companies, with more than 20 years’ PLC-board experience. He is currently a Non-executive Director at MCB Group Limited. He also undertakes a number of pro bono appointments. Stephen was previously Non-executive Director at Informa plc, Actual Experience plc, Rosenblatt Group plc, Restore plc, Jaywing plc, Inmarsat plc and MECOM plc. In his earlier career Stephen was Chief Financial Officer and then Chief Executive Officer of Telewest Communications plc and Vice Chair of Investment Banking at WestLB Panmure.
Non-Executive Director
Helen Kelisky brings over 30 years of technology business and sales leadership experience and a track record of driving top line growth, leading national and international businesses. Previous roles included Managing Director of Google Cloud in the UK and Ireland, Senior Vice President of Cloud sales at Salesforce UKI, and Vice President of Cloud at IBM. Helen has been recognised as one of the 100 Most Influential Women in UK Tech 8 years in a row from 2017 to 2024, as well as one of the most influential leaders in UK Tech in 2023 and 2024. She currently sits on the Board of Women in Telecommunications and Technology, a non-profit networking group focused on education and enhancing women’s careers.
Non-Executive Director
Graeme is an experienced corporate financier and qualified chartered accountant, having previously been a partner with Arthur Andersen LLP and finance director of international groups. He is currently a non-executive director of Aberforth Geared Value & Income Trust plc and Cruden Holdings Ltd. Graeme was formerly Chair of Macfarlane Group PLC and acted as a non-executive director of businesses including Smart Metering Systems plc, Interbulk Group plc and Belhaven Group plc. He also undertakes a number of pro bono appointments.