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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 CoE is responsible for the whole portfolio of anaerobic technologies and associated infrastructure within the Suez Water Technology and Solutions business globally. Amaya is an Engineer and a Project Manager with many years of experience in the Waste to Energy Sector. She has been involved in the design, construction, operation, risk management and optimisation of many Anaerobic Digestion plants. Amaya is passionate about increasing industry knowledge to ensure process safety together with achieving quality and effective operations. Amaya is the Chair of ADBA’s AD Certification Scheme steering group.

Avril Banks, Director, AB Environmental

Avril Banks

With over 20 years’ experience in the organic sector, Avril spends her time looking after feedstock and biological performance of a wide range of AD plants across the UK. Her company Ab-En Ltd provides practical support to help optimize the biological and operational aspects of AD including in-house lab facilities and providing compliance and commercial support to the industry. She is chair of the CIWM Biological treatment SIG and sits on the ADBA and BioVale steering groups.

Tina Benfield, Technical Manager, CIWM

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Technical Manager for CIWM, part of the technical team for over 19 years, coordinator for CIWM Biological Treatment, Resource Mgmt and Waste Strategy special interest groups.  Part of Defra’s working groups for Litter Strategy, Chair of BS 508/1 and member of CIPFA Environmental Services group.

Fiona Donaldson, Senior Policy Officer, SEPA

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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.

Katie Halter, Heat and Business Energy Policy Adviser, BEIS


Jon Harrison, External Affairs Manager, ADBA


Working closely with ADBA’s policy team, Jon leads the organisation’s lobbying work with politicians in Westminster, Whitehall and the devolved nations. This involves meeting with and corresponding with MPs, ministers and their advisers, responding to parliamentary enquiries and monitoring developments in government policy.

Jon has 5 years’ experience working in trade associations and several years previously working in Parliament on policy development.  He has a track record of successfully campaigning for changes to legislation and changes to the regulatory environment.

Jacob Hayler, Executive Director, Environmental Services Association

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Jacob Hayler is the Executive Director at the Environmental Services Association – the UK’s trade association for managers of waste and secondary resources. Jacob joined ESA from the City in 2005 as an Economist focused on helping to develop market-focused policies that combine environmental and economic sustainability. At various points during his time at ESA, Jacob retained responsibility for policy relating to finance, tax, carbon management, contracts and energy from waste.

In January 2015 Jacob was appointed ESA’s Executive Director and he now retains responsibility for the day to day running of the Association. Jacob has represented the industry on multiple government advisory bodies and committees and is the UK’s representative on various pan-European waste and recycling industry bodies.

Greg Hilton, National New Business Manager, Flogas

Greg Hilton

Greg Hilton is National New Business Manager for Flogas Britain, a leading gas supplier, part of the FTSE100 business DCC plc. Flogas Britain is the leading supplier of propane for enrichment of biomethane, having installed the propane solution for the UK’s first gas-to-grid installation, and currently supplying propane to the majority of the UK’s operating biomethane sites. Greg’s involvement in anaerobic digestion started over ten years ago, as one of the founder members of the AD and Biogas Association (ADBA), whilst providing consultancy services to some of the UK’s first AD projects. Greg is the lead for the Flogas offering to the biomethane sector, and is working on the design and installation of Flogas’ bespoke propane injection technology and propane supply infrastructure for the next phase of biomethane installations. Greg is also working on natural gas solutions for the transport sector, including the use of biomethane.

Matt Hindle, Head of Gas, Energy Networks Association

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Matt Hindle is Head of Gas for the Energy Networks Association. He works with ENA’s members on issues affecting the gas transmission and distribution networks, including the future role for gas in heat, transport and energy policy more widely. Prior to joining ENA, Matt spent six years working on green gas, energy policy and recycling issues for ADBA, ultimately as Head of Policy. He started his career with the Liberal Democrats as a researcher.

David Hurren, CEO, Air Liquide

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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.

Dr Thom Koller, Senior Policy Manager, ADBA


Thom supports members on RHI and FIT eligibility as well as promoting biomethane as a transport fuel. He leads ADBA’s work with industry, government and regulators to bring about positive legislative and regulatory change to grow the AD industry. This includes responding to government consultations and formulating position papers.

Ian Marshall, Green Gas Development Manager, Wales & West Utilities

Ian Marshall UPDATED

Ian joined Wales & West Utilities in 2011. Following various roles around the company Ian took up the position of Green Gas Development Manager in 2016 driving forward the development and uptake and use of green gases within the gas network.

Olivia Midgley, News and Business 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

Alan Midwinter, Commerical Manager, SGN


Thomas Minter, Director, Malaby Biogas

Thomas Minter

Thomas is a director of Malaby Biogas which owns & operates the Bore Hill Farm Biodigester in Wiltshire. He has had a diverse in hospitality, horticulture and property development and brings a unique perspective as a pioneer of the AD industry. His focus is on innovation, operation skill and knowledge transfer.  He is bringing forward plans for a combined AD Training, Research and Innovation Facility to build industry capacity and competence. Optimisation and efficiency improvements have taken Bore Hill Farm beyond its original design capacity and Thomas believes there are further performance improvements still to be made.

Thomas is a member of the ADBA Strategic Advisory Board and recently won the ADBA AD Hero of the Year award. He is an active member of REA and ADBA and, as a member of the World Biogas Association, is working to build international AD capacity. Earlier this year Bore Hill Farm Biodigester was the first plant in England to be certified under the new AD Certification Scheme.

Combining a world view with a principled and common-sense approach Thomas sees opportunities where others see problems.

William Mezzullo, Head of AD Asset Management, John Laing Capital Management

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William is Head of Asset Management at John Laing Capital Management having recently joined from Oxford Capital Partners LLP where he managed an AD Portfolio of £80m AUM. Prior to this he worked at Future from 2010 to 2017 progressing to Head of Projects in addition to having an active role in working with regulators, policy makers and trade associations.

Kathy Nicholls, Senior Advisor, Environment and Business, Site Based Regulation, Biowaste Treatment Environment Agency

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Kathy started work with the Environment Agency in 2004 as a regulatory officer and has been working as an advisor since 2008.  She leads on biowaste treatment sector, facing multiple stakeholder and advising operational teams internally.  She also leads the biowaste sector for the Environment Agency to deliver consistent regulation and the objective of the 25 year plan towards a sustainable biowaste sector.

Hattie Parke, Senior Consultant, Eunomia

Dr Evangelos Petropoulos, Senior Technical Engineer, Premier Tech Aqua

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Dr Petropoulos is an expert in the field of wastewater treatment, waste management and environmental bio-engineering and biotechnology, with extensive experience in the field of (waste) water to energy. He has a PhD in Environmental Engineering from Newcastle University (UK) and a wide industrial and academic experience, gained from working in China, Greece, Spain and the UK. Dr Evangelos Petropoulos joined the Premier Tech Aqua UK team in Peterlee, County Durham in September 2017, specialises in packaged water and waste water treatment solution; Dr Petropoulos focuses on the design and development of its world leading water and wastewater solutions. In parallel he is an external research associate at Newcastle University where he is carrying out pioneering research related to the anaerobic microbiology.

Daniel Purvis, Head of Portfolio Management, Ingenious Capital

Dan Pervis

Dan is Head of Portfolio Management at Ingenious Capital where he has responsibility for an AD portfolio of 14 assets as well as their Solar and Wind assets. As well as the construction and operational assets, Dan assists in Ingenious’ development work across Gasification, CNG filling stations and AD. Previously Head of Operations at Future Biogas for 5 years, he created and led an operations and maintenance team that looked after 11 sites achieving industry leading uptimes. Before Biogas Dan was part of the operations management team for a global petrochemical company.

James Richardson, Chief Economist, National Infrastructure Commission


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.

Martin Shannon, Commercial Manager, Cadent Gas

Martin Shannon

Martin Shannon is a seasoned commercial manager working within Cadent Gas, focusing on innovative and collaborative ways we can decarbonise gas networks.

Dr Alan Taylor, Associate Director, Aardvark

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Alan is a Chartered Engineer with particular experience in the instigation, development and management of applied research and the demonstration of projects and programmes across technology boundaries. He has worked with Aardvark since 2015 and has specific technical experience in the assessment and selection of technologies and as a project developer for bioenergy projects in the electricity generation and municipal services context. This experience has included the management of diverse projects and programmes, many of which have been delivered as collaborations, partnerships or community based projects, where the successful understanding of the relationships between participants and external stakeholders can be vital in securing success. He is also experienced in the scoping and procurement of specific packages of research needed to support complex and novel consent applications in both the terrestrial and marine context.

Alister Veitch, Head of Sales (UK), Orsted

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Alister is responsible for the development and ongoing sales in the UK and Ireland of the Renescience technology, an own-developed proprietary technology by Ørsted, able to convert unsorted Municipal Solid Waste into clean recyclables and dissolve biodegradables into a homogenous bio-liquid suitable for fast and high yields of biogas production. As well as Renescience, Ørsted has interests in a number of AD projects across Europe. Alister has worked in the organic waste world for over twenty years specialising in AD project development and digestate recycling.

Håvard Wollan, CEO, Biokraft


David Woolgar, Consultant, David Woolgar Consulting

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