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Meet the Team
Our team of experts comprises environmental chemists, energy specialists, environmental consultants, multidisciplinary engineers and project managers. Please see below the profiles of some of our key consultants.
Prith Rajendran

Prith Rajendran - Managing Director

Prith joined Stopford in 1996 as Managing Director of its then fledgling process engineering division he is also a Chartered Chemical Engineer. Prith has been MD of the group since 2000. Prior to joining Stopford, he was a chemical engineer within the pharmaceutical and fine chemical manufacturing industries for multinational companies and also ran an environmental consultancy.

Prith has overall responsibility to ensure that the company achieves its strategic objectives and to provide leadership and direction to the board and staff.

Apart from his managerial roles, Prith continues to provide consultancy services to clients. In particular to the environmental sectors where he has provided support on a number of renewable energy projects both within the UK and abroad. He is also providing strategic support to the company’s environmental division, Stopford Energy and Environment.

Dr. Ben Herbert - Director of Research and Environment

Ben was awarded his undergraduate degree in Environmental Chemistry from Lancaster University in 2001. Following the award of his PhD in 2005 he undertook a number of business development and consultancy roles which focused on commercialising activity in the chemicals and environmental technologies sectors. During this period Ben also conducted a number of industrial research projects with clients ranging from regional SMEs to blue-chip multinationals.

Ben joined Stopford Projects Ltd in 2008 and successfully developed a new R&D and environmental consultancy arm of the business. Ben now leads Stopford Energy and Environment Ltd, delivering green technology, waste, energy generation and low carbon projects in the UK and overseas. Ben is also an Honorary Research Fellow at Lancaster University, an active member of regional and national environmental advisory groups and co-supervises a number of industry led postgraduate research projects.

Gavin Colls

Gavin Colls - Director of Renewable and Nuclear

Gavin joined Stopford as a Process Engineer in 2003 and after executing a number of successful projects including 30% saving on heat requirements for a bulk chemicals facility and project management of large waste to energy projects Gavin was promoted to Associate Director for Nuclear and Renewables in 2009.

Gavin holds a BEng (Hons) in Chemical and Bio Process Engineering and gained Fellowship of the Institute of Chemical Engineers before turning 40 years old.

He has worked for over twenty years in operation and design on processes from bulk chemicals to nuclear decommissioning. His strengths are solid process engineering from heat and mass balances through to unit operations such as heat transfer.

Lois Ricketts - Research Consultant

Lois has worked with Stopford since 2008 after graduating with a first class Bachelor’s degree in Environmental Science. She has since studied for a Master’s degree (MRes Science of the Environment) with a particular focus on Energy from Waste and its byproducts, graduating in December 2012. In early 2013, Lois obtained Chartership with the Institution of Wastes Management (CIWM). Lois is also an Associate Member of the Royal Society of Chemistry.

Lois’ role at Stopford is in the waste sector. Lois leads Stopford’s “waste team”, providing expertise in regulation, waste treatment technologies, and waste characterisation, with an emphasis on problem wastes. As a Research Consultant with Stopford, Lois has worked with clients to develop bespoke waste treatment solutions, address their regulatory obligations, and conduct technical feasibility studies. Lois has worked on numerous and varied research projects, ranging from development and testing of waste-derived agricultural products, to development of a novel microwave plasma gasification system to treat waste and provide energy.

Dr. Michael Wilkinson - Environmental Consultant

Michael worked in the engineering industry for 20 years before undertaking an undergraduate degree in Environmental Science (BSc Hons., Pollution of the Environment) and a PhD at Lancaster University. He also has significant post-doctoral research experience including two years at the University of Colorado at Boulder, USA investigating environmental feedbacks under different climate change scenarios that affect atmospheric chemistry.

Before joining Stopford Energy and Environment, Michael worked as an Environmental Consultant providing services to scientific and engineering consultancies for environmental modelling, monitoring and assessment, with particular emphasis on air quality. Michael has experience of delivering consultancy for government departments and regulatory agencies, local authorities and major companies. He is a regular user of atmospheric dispersion models and screening tools commonly used by industry and regulatory authorities. Michael is a member of the Urban Futures Expert Panel.

Dr. Chris Lupa - Renewable Energy Technologist

Chris graduated from Lancaster University in 2009 with a 1st class honours degree in Environmental Science. He followed this with an Industry based PhD with LU and Stopford entitled 'Advanced Thermal Treatment for the Generation of Energy from Mixed Waste Materials' which he completed in 2013.

Chris’ focus is research and development for renewable energy technologies, specifically advanced thermal processes and combustion. Chris provides the scientific and technical basis to inform the engineering design.

Chris BetteridgeChris Betteridge, Environmental Consultant

Chris joined Stopford in 2012 after graduating with an MSc Energy and the Environment (Distinction) and first class honours BSc Earth and Environmental Science in 2010. Chris is a graduate member of the Energy Institute.

Chris supports Stopford’s environmental projects team through the delivery of consultancy services including market research, risk assessments, and feasibility studies. Chris is also responsible for coordinating project delivery and is the point of contact for funded R&D projects, ensuring smooth communication between all parties.