Meet the team

Peter Cieslak

Business Development Director

Peter has achieved a Postgraduate Award (PgA) in Innovation, Business, Leadership from the University of Warwick and holds a Biogas Engineering & Plant Operation Professional Certificate from the University of Hohenheim. He is committed to making Gas Data the compelling choice for gas monitoring and analysis solutions by combining over a decade of his management expertise and the business’s 30 years of experience as a market-leading provider of products and services in our chosen markets.

Dr Daniel Lee

Technology & Compliance Manager

Dr Daniel Lee uses his academic and industrial research background to lead Gas Data’s Research and Development department. As a chartered physicist and legislative compliance expert, he is in charge of developing clients’ inquiries into fit-for-purpose and affordable solutions. Daniel is also responsible for implementing and ensuring compliance with all our ISO standards throughout the company. Daniel is an opinion leader in the biogas industry, with a place on the World Biogas Associations Policy, Innovation and Technical committee.

Roger Mathers


Roger is a proven leader in channel sales, marketing, and business development and manages multiple channels to a broad range of industries working globally.  As Chairman, he is involved in commercial strategy development and planning, allowing Gas Data to meet its objectives and goals. He has an unprecedented track record of success and is an invaluable resource to Gas Data.

Cheng Yoe

Sales and Marketing Director

Cheng is a very successful entrepreneur and an expert in developing international strategic relationships. His technical understanding is underpinned by his academic qualification from the University of Strathclyde. He brings a wealth of experience in Sales and Marketing to the business. His role is to devise and implement a sales and marketing strategy while providing guidance and mentoring to our young and talented team.

Patrick Gardner

Finance Director

Patrick is a chartered accountant with 9 years of experience in the finance industry, and a degree in Chemistry from Loughborough University. Overseeing Gas Data’s finance department and managing its finances are the key elements of Patrick’s role. Tasks range from the day-to-day financial running of the company to exploring new markets and opportunities to move the business forward.

John Charlton

Engineering Manager

With a degree in Product Design and Management, John has progressed from Mechanical Design Engineer to Engineering Manager, supervising key parts of production and improving the company’s manufacturing systems to better product quality, safety, and performance. He is also a key part of the technical development team, as Gas Data continually drives for innovation.