Meet the Team

Simon Nash


Simon was originally CFO for the Cresatech group, but has since taken on the wider role of CEO. He is a Chartered Global Management Accountant and a fellow of the Chartered Institute of Management Accountants.

After an early career as an electronics engineer, Simon changed direction after joining a fast track management development programme.

After graduating in business studies he qualified as an accountant in 1993. His first Finance Director role was for software specialist PWA Group in 1995, where he led it through significant growth, including a VC fundraising and its subsequent sale to Great Plains Software (now Microsoft Business Solutions).

In 2004, Simon created SRN Associates, a financial management consultancy focusing on growing technology companies, through which he helped over 20 companies develop and implement growth strategies; a role that has also included corporate finance transactions ranging from acquisitions, corporate restructuring, fundraising and M&A work.

He has worked with established names, such as SunGard, Great Plains, Halma, and Microsoft as well as a wide range of VC and private equity backed companies.

Outside the office, Simon is a keen runner, and enjoys reading, music, playing keyboards (badly), and travelling with his wife Alison, and his (almost adult) kids.

Simon Jarvis

Simon Jarvis


Simon has many years’ experience in the power and electronics industries and has been an active player in the UK renewables sector as it has developed.

He holds a Higher National Diploma in electrical engineering and has accumulated a wealth of experience in the off-grid power solutions market for telecoms and other challenging sites.

He has worked closely with leading companies in the field including generator specialist Harrington and cell tower provider Hutchinson Engineering and his consultancy expertise has taken him into projects with wind turbine and photovoltaic suppliers, as well as organisations such as Airwave, Dong Energy, Clarke Energy and HM Forces.As CTO,

Simon is the leading technical guru for Cresatech and has overall responsibility for the development of all Cresatech products and services.

He also maintains close contact with customers at a technical level which allows him to understand product and service deployment in often complex customer environments. He has been known to spend a fair amount of time in his hard hat and high viz jacket over recent years!

Outside of work Simon has a keen interest in the history of the American mid-West. He is also a half decent guitarist and enjoys time with his family, especially since he has become a (rather young) grandfather.

John Wybrew OBE


John has had an extensive career in the energy industry. In the late 1970s, he managed Shell/Esso’s gas production operations in the Southern North Sea before moving to the position of Technical Director of Shell’s major oil and gas exploration and production company in Brunei.

He then moved to head up the Planning and Economics Division of Shell’s E&P Co-ordination in The Hague.  In the 1980s, he was seconded for three years to the Prime Minister’s Policy Unit as Mrs Thatcher’s adviser for energy and transport, returning to join the Board of Shell UK as Planning and Public Affairs Director.

His later career included a period of eight years as Executive Director of British Gas and a Director of National Grid Transco (now National Grid).  John also served as a Non-Executive Director on the Board of the UK Energy Regulator, Ofgem, from 2004 to 2012. In 2004, he was also Special Advisor to a House of Lords Sub-Committee inquiry into the security of future gas supplies. He chaired the British Energy Association from 2005 to2007, and still chairs the Foundation for Management Education.

Since then, he has had a portfolio of interests, until 2009 including chairmanship of a Government-backed Sector Skills Council set up to anticipate and tackle the skills needs of the gas, electricity, water and waste management industries, for which he was awarded an OBE.

Today, he is active on the boards of one or two new and developing businesses in the energy sector. He holds a first class Honours degree in engineering from Cambridge.

Paul Mumford


As CCO, Paul is driving market strategy and business development for Cresatech. He has successfully developed new business opportunities and markets for US and UK technology companies, across North America, Europe (EMEA) and Asia.

After graduating in Electrical Engineering, Paul worked with technology and service companies including Schlumberger, Retix, Ascom and AT&T/NCR.

Business development has remained the focus throughout, when working with both start-up and established organizations.

Paul has a wealth of knowledge and experience in developing early stage opportunities, direct sales, channel and OEM business.

It was involvement in developing new business opportunities for innovative electrical protection and monitoring technologies that led to the formation of Cresatech in the UK in 2011.

Over the last few years, Paul has focused on developing opportunities for monitoring service technologies within Power Utilities, Telecommunications, transport and Industrial sectors, encompassing collaboration with IoT/ cloud based service partners to enable far wider and more cost effective deployment.