Our People


About Us

Everyone's Contribution Counts


David Milton BAcc CA – Chief Financial Officer

David joined the Heliex leadership team in November 2014 as CFO.

He trained with KPMG before joining The JPM Company UK Ltd and subsequently became an FD at Scottish Enterprise. David, followed this as CFO at Howco Materials Management PLC & then at retailer Internacionale Limited. 

David has a degree in Accountancy from The University of Glasgow and is a Chartered Accountant at The Institute of Chartered Accountants of Scotland.


Paul Drennan-Durose - Chief Executive Officer

Appointed in 2018, Paul joined as CEO of Heliex Power at a particularly challenging time for the company. He has provided decisive, focused and clear direction for the Board and the organisation, across all aspects of the business.

Paul has vast international experience of successfully leading and directing transformation in complex services, distribution, technology, engineering & manufacturing businesses globally.


Dr Marco Iezzi PhD – Thermodynamics and Product Planning Director

A native of Italy, Marco initially had responsibility for conceptual design, prototyping & product testing.

Today, Marco leads the definition of the company’s product ranges through the investigation, analysis & matching of technology, markets, legislation as well as economic & industrial trends.

Marco has a Ph.D. in Mechanical and Managerial Engineering and has a degree in Mechanical Engineering from University of L’Aquila, Italy.


Nick Alexander CEng – Engineering Manager

Nick joined Heliex Power in 2016 as Engineering Manager, and now reports to the CEO. 

Nick graduated with a Masters in Mechanical Engineering. He has held engineering roles in the UK with Morgan Sindall (Waste water treatment sector), followed by roles at Clyde Union Pumps. There, he focused on steam turbine safety pumps in the Nuclear sector.


Graeme Boyce - Operations Manager

Graeme has over 30 years manufacturing experience, with a focus on operations and digitalisation. 

Graeme joined the Heliex Team in 2020, reports to our CEO and leads Heliex Power's output - all of Heliex's operations including service, assembly, testing, supply chain and logistics.