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Take a look at the industry leaders set to speak this year…


Stuart Roberts, Vice President, NFU

Stuart Roberts NFU

Stuart farms 400 hectares in Hertfordshire and Kent in partnership with his wife Emma and father Howard.  A third generation arable and livestock farmer at Hammonds End Farm, Harpenden Stuart has also worked for Defra and the Food Standards Agency and held senior management roles within the meat supply chain.

The farm incorporates around 300 hectares of combinable crops supplying grain to more than 50 artisan mills and bakers throughout the UK.  The remaining land is predominately permanent pasture and a small amount of woodland.  The farm includes two cattle herds, a commercial Simmental / Hereford herd producing 14 month old store cattle and a small but growing pedigree herd of Hereford cattle.  The business also includes a small flock of laying hens.

Stuart has served as Hertfordshire NFU County Chairman since 2015 and has served on both the East Anglian livestock and combinable crops board.  Stuart has previously served on the boards of Red Tractor and the Agriculture and Horticulture Development Board.

Prior to returning to the family farm Stuart had a career in the civil service with the Food Standards Agency and Defra and has held a number of positions within the red meat supply chain with both the British Meat Processors Association and the ABP Food Group.

Stuart has a daughter and three sons and enjoys cycling and running (slowly).

Chris Stark, Chief Executive, UK Committee on Climate Change,

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Chris Stark is the Chief Executive of the UK Committee on Climate Change, the public body tasked by the Climate Change Act to be the independent authority on tackling climate change. Chris leads a team of analysts and specialists, offering expert insight into the challenges of reducing emissions and adapting to the changing climate.

Chris has wide experience in government. He has designed economic policy in Whitehall, including in HM Treasury and the former Department for Business, Innovation and Skills. He was previously Director of Energy and Climate Change in the Scottish Government, leading the development of the Scottish energy and climate strategies.

Chris speaks regularly on the transition to a zero carbon economy and the need to confront climate change with urgency.

Hilary Tanner, Policy Adviser, Local Government Associaiton (LGA)


Hilary joined the Local Government Association’s Finance and Policy Team in 2012, working as an adviser with a recently expanded portfolio on environment policy, covering climate change, waste and recycling, energy and flooding.

She worked at the Improvement and Development Agency for Local Government in a variety of roles since 2000. This included a management role in the Beacon Council good practice scheme and improvement support for councils on adult social care. From 2008-9 Hilary was seconded to the Department of Communities and Local Government to manage a national programme to support innovation in local government.

Her career history includes roles in the housing service at the London Borough of Greenwich and the civil service. She completed an MSc in Public Service Management in 2007 and has a strong interest in the voluntary and community sector, holding a trustee role at Relate since 2010.

Rebecca Thompson, Senior Policy Manager, ADBA

Rebecca Thompson ADBA

Rebecca has 4 years of experience working as a government economist, developing evidence, briefing material and policy advice. This included working as Private Secretary to the Permanent Secretary of the Department for Work and Pensions, working in close proximity to the Department’s Ministers and developing an expert knowledge of the inner workings of government.

Rebecca joined ADBA following a MSc in Development Economics at the School of Oriental and African Studies, where she further developed her interest in sustainability and knowledge of agricultural management. She is committed to campaigning for action against climate change. Rebecca now leads ADBA’s work with industry, government and regulators to bring about positive legislative and regulatory change to grow the AD industry, collaborating closely with members to represent the industry’s voice. This includes responding to government consultations and formulating position papers. She also supports members on RHI and FIT eligibility, as well as promoting biomethane as a transport fuel.


Amaya Arias Garcia, Engineering Design Manager, Suez Anaerobic Digestion Centre of Excellence

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Amaya is the Engineering Design Manager for Suez Anaerobic Digestion Centre of Excellence. The centre of excellence is responsible for the whole portfolio of anaerobic technologies within the Suez Water Technologies business globally, often integrating the AD process with other Suez products including Thermal Technologies and Effluent Treatment.

Amaya started her career in resource recovery as a Process Engineer working with thermal and biological technologies. From there she moved into Project Management and Operations. Over the last 12 years she has been involved in the design, construction, risk management and operational optimisation of many Anaerobic Digestion plants.

As a Design Manager in Suez Amaya is the focal point for the technical queries from the sales, commercial and projects teams, managing the design process via a series of key design review gate posts.

Amaya has always been passionate about increasing industry knowledge. Within Suez part of her role is to mentor engineers in the regions to develop a broad base of competent and enthusiastic professionals including setting and enforcing the systems and standards by which they work.

Charlotte Morton, Chief Executive, ADBA

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A practising lawyer for 10 years, Charlotte Morton studied for her MBA at London Business School before setting up a car club business. Asked to establish the business side of ADBA in 2009, she saw the potential of an industry that can deliver huge potential and value to the UK. Given the even bigger global potential, which must be achieved if the Paris Climate Change targets and UN Sustainable Development Goals are to be met, Charlotte played a pivotal role in establishing the World Biogas Association in 2016 to promote and increase the rate of uptake of biogas globally. Charlotte is also on the board of Green Gas Trading Ltd, which runs the Biomethane Certification Scheme.

Dr. Keith Simons, Principal Scientist, SHV Energy

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Keith is an International executive specialising in innovation management in the sustainable-, energy-, chemical-, nano-, pharma and, bio-, carbon abatement technology markets. Experienced in public and private fund-raising for academia and industry at local, national and European levels.
Keith is a performance-driven, entrepreneurial manager with 30+ years of continuous advancement and expertise in international business, sales and marketing, R&D, sustainability and industrial-academic collaboration. Keith has coached projects which have successfully spin-out four companies (TOSCA Solutions, Oxolutia FGEN and Deutsche Nanoschicht – since acquired by BASF) as well as a number of EC projects.

Keith joined SHV Energy as Principal Scientist in February 2019. In this role, he is a key member of the B100 core team with the following areas of responsibility: managing R&D activity, participant in collaborative research projects, specific support for managing GB specific R&D funding activities including specific public affairs, outreach and participation in think tanks.

Andy Griffiths, Head of Value Chain Sustainability, Nestlé UK&I

Andrew Griffiths

Andy is Head of Value Chain Sustainability for Nestlé’s UK&I businesses, responsible for the development and delivery of the Environmental Sustainability strategy both within the operation and across the value chain. He has worked for Nestlé UK&I for over 20 years, originally in operational and engineering roles. He is both a chartered environmentalist (IEMA) and a chartered engineer (IET) and is focussed on bringing together the engineering expertise, operational experience and environmental insights of the organisation alongside collaborative partnerships with academia and key delivery partners to develop and implement robust and effective sustainability programmes.

Keith Warburton, Decarbonisation Development Manager, Wales & West Utilities


Keith Warburton has worked for 40 years in the gas and nuclear industries, with the National Grid, Northern Gas Networks. Scottish & Southern Energy and, more recently, Lagoni Engineering Ltd. A member of the Institution of Gas Engineers and Managers and former Director of The Gas Industry Safety Group (GISG), he will lead Wales & West Utilities work on green gas, and be part of their Energy Strategy team, working to meet the UK Government’s 2050 Net Zero carbon emissions target.

Patrick Ottersbach, Managing Director, Macquarie Principal Finance

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Patrick has 12 years’ investing experience, with expertise investing debt and equity into growing or mature businesses. A Board Director at a UK AD plant operator and developer, Patrick  holds an MPhil from Cambridge University, a first class BSc degree from Warwick University and is a CFA charterholder.

Olivia Midgley, News Editor, Farmers' Guardian

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Olivia Midgley is a London based journalist specialising in agriculture and rural affairs. She is the news and business editor at weekly farming publication Farmers Guardian. Twitter: @FGoliviamidgley

Cath Crowther, Regional Director, CLA East.

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Cath has been involved in a wide range of biogas projects advising on the whole AD process including valuations, option and lease agreements, initial feasibility, due diligence, planning & permitting and feedstock supply/digestate agreements. Cath is a chartered surveyor and a fellow of the CAAV.

Cath was recently appointed Regional Director, CLA East.

Alister Veitch, Head of Business Development, Marches Biogas

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Alister comes from an agricultural background and has worked in the waste recycling industry for the last 20 years in general management and business development. Initially this was with biosolids for Thames Water moving to food and general waste for Oran Environmental Solutions, Biogen, Orsted and Marches Biogas.

Louise Hall, Project Manager -ALG-AD, Swansea University

Louise Hall

As project manager, Louise is responsible for ensuring that the project delivers on its aims and objectives successfully. Louise brings a wealth of experience, having previously successfully managed large scale research in global health.

In previous roles, Louise has also successfully led delivery of data analysis, software and web development and healthcare service projects. She has worked in Higher Education since 2013, and has supported externally funded projects, and strategic projects delivered across Swansea University.

Dr. Claudio Fuentes Grünewald, Research Officer in the Department of Biosciences, Swansea University


Claudio obtained his degree in Aquaculture in 2001 from Arturo Prat University, Iquique, Chile. In 2008 he was awarded his Masters degree in Environmental Studies, and in 2011 he obtained his PhD in Environmental Science and Technology. Both titles came from Universitat Autònoma de Barcelona, Spain.

An algal physiologist, he has over 20 years’ experience in algal growth in bioreactors (including delicate flagellate species), biochemical analyses and purification of materials external to the cells. He also has experience across applications from aquaculture to medicine.

You can find out more about Claudio by visiting his LinkedIn profile

Carl Gurney, Renewable Energy Director, Jelf


Carl Gurney is the Renewable Energy Director at Jelf. He has over 20 years’ experience in the insurance industry and leads a team of renewable energy executives. Carl sits on ADBA’s executive advisory board, is an active member on ADBA’s steering groups and was instrumental in helping deliver the AD Certification Scheme. Carl writes for renewable energy sector publications, speaks at events and provides insurance and risk management advice for a number of funders and operators.

Daniel Scheven, Managing Director and Co-Founder, AcrEnergy

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Daniel is responsible for the overall strategy and executive management of AcrEnergy, to both develop as well as operate biogas plants. Prior to his current role, he was head of Pan-European Project Development at, one of the leading independent biomethane suppliers in Europe. He also worked for c.10 years in private equity with companies such as Hicks Muse (US buy-out firm) and Carbon Trust as an investment manager and in operational roles of their portfolio companies.

Dr. Thom Koller, Gas Policy Manager, Energy Networks Association (ENA)


Thom is Gas Policy Manager at the Energy Networks Association representing the ‘wires and pipes’ transmission and distribution network operators for gas and electricity in the UK and Ireland. He leads ENA’s Gas Decarbonisation Pathways Project, a major industry initiative to build on the work that the networks have been undertaking to build a low cost, low carbon network and develop new technologies that make the most of biogas, bioSNG, hydrogen and smart hybrid heating systems. Thom previously worked on green gas and energy policy for ADBA. His PhD from the University of Birmingham focuses on international law.

Philip Fjeld, CEO, CNG Fuels

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Philip has been working in the natural gas industry since 2002 when he joined Hoegh LNG, an LNG shipowner in Oslo, Norway. In 2006 he left Hoegh LNG and founded FLEX LNG, a company that spearheaded the innovative concept of floating liquefaction vessels. Philip was the CEO of FLEX LNG from 2006 until 2013.

In 2014 Philip co-founded CNG Fuels. He is a Director and CEO of CNG Fuels, which develops, owns and operates Bio-CNG refuelling infrastructure. The company is rolling out a UK wide network of reliable and conveniently located refuelling facilities to service customer’s HGV fleets. CNG Fuels’ Bio-CNG fuel is 100% renewable and sustainable biomethane that is sourced from a waste feedstock, independently verified and approved by the Department for Transport’s Renewable Transport Fuel Obligation (RTFO) Unit.

Philip has a nautical degree and has served as an officer in the Royal Norwegian Coast Guard. Philip earned his Master’s degree in Strategy and Management from the Norwegian School of Economics and Business Administration.

William Mezzullo, Head of JLEN AD, Foresight Group

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William is Head of JLEN AD at Foresight Group, having managed JLEN AD assets over the past year.

Prior to joining Foresight Group, William was a Portfolio Manager at Oxford Capital Partners responsible for managing AD investments through Private Equity funds. Prior to that he was Head of Projects at Future Biogas, having progressed through the company since starting in 2010 and overseeing the deployment of a number of AD plants over this time.

William is also REA Biogas Chair

Angela Bywater, Southampton University

Angie Bywater

Angela Bywater is a BBSRC Anaerobic Digestion Network co-manager within Engineering and Physical Sciences at the University of Southampton.

Angela manages the BBSRC AD Network with Louise Byfield. The Network provides funding for Proofs of Concept and Business Interaction Vouchers, as well as running relevant events for industry and research in the field of anaerobic digestion / industrial biotechnology.

Dr Jane Gilbert, Carbon Clarity

Jane Gilbert

Dr Jane Gilbert is a chartered environmentalist and waste management professional and has been involved in the organics recycling sector for over twenty years. She is the former chief executive of the Composting Association, co-founder of the European Compost Network and an active member of the International Solid Waste Association.

Jane now works for her own company, Carbon Clarity, and is passionate about organics recycling and the contribution it can make towards the circular economy.

Dr Jonathan Scurlock, Chief Advisor, Renewable Energy, NFU

Jonathon Scurlock

Dr Jonathan Scurlock is a senior NFU adviser since 2007, Jonathan Scurlock leads a small team providing analysis and advice on energy and climate change to the NFU’s management, office holders and members. His background is university and government research, covering energy and climate policy, plant physiology, all kinds of biomass fuels, bio‑based products and other renewables. Author of more than 50 publications, he was educated at Oxford and London, and is a Visiting Fellow at the Open University.

James Astor, Chairman, Regen Holdings / Whites Recycling

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James became Chairman of Regen Holdings Ltd in August 2015, having spent the previous 6 years in the UK organic waste recycling sector as managing director of Agrivert. Regen is an integrated total waste management business based in the Midlands, owned by the American private equity firm TPG.

Peter Anderberg, Founder, Nordic Heat - The Smart City Alliance


Founding Partner and Managing Director of Nordic Heat and the Smart City Alliance. 25 years of operational management experience in the Swedish and European energy sector. Have held senior management positions in e.g. Alstom, British Steel and Logstor. Specific focus on smart city energy strategies and district energy – strategic planning, business modelling, sales & marketing strategies, facilitating business development and entrepreneurial initiatives. International background having lived and worked in France and in the UK

David Hurren, CEO, Air Liquide

David Hurren 2019

David is CEO of Air Liquide’s Advanced Business and Technology UK business focusing on Biomethane Gas to Grid projects, where Air Liquide invests in the technology on an AD site and on alternative energy for vehicles, especially at this point HGV’s s.  Air Liquide has a European wide footprint for both production of Biomethane in Gaseous and Liquid forms and has over 50 Natural Gas refuelling stations.
Within the UK they have been leading a major tranche of work with Innovate UK and Cenex on testing and evaluation of Euro VI Natural Gas HGV’s vs Diesel both on testing facilities but also in real world driving conditions.  They have also been at the forefront of recent developments with BEIS and DfT to enable gas from Biomethane production sites in UK to go to either Renewable Heat or to Transport in form of RTFO.

David is chair of the BCGA committee on Alternative Energy which has established UK codes for refuelling stations for Alternative Energy and engages with Government and NGO’s to facilitate development of the market and is a member of the ADBA Advisory Board.

Phil Gerrard, CEO, Privilege Project Finance

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Phil has almost 30 years’ experience in the leasing and asset finance industry, and joined Privilege Finance as CEO in 2015, bringing with him a wealth of experience and knowledge from previous senior strategic roles, including Head of Grant Thornton’s European Leasing Advisory Services.

Privilege Finance provide integrated financial solutions specialising in renewable energy, including on-farm Anaerobic Digestion and waste to energy projects. Privilege Finance utilise a lifecycle approach, which allows them to support the growth of the UK AD and biogas sector through funding and technical support.

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