Neil Titchener is a Senior Manager at Boeing, leading the team developing the Cascade Climate Impact Model-a data modeling and visualization tool supporting aviation’s decarbonization efforts. With a strong foundation in experimental aerodynamics and propulsion research, Neil brings over 15 years of experience spanning roles at Boeing, Aurora Flight Sciences, MIT, and the University of Cambridge. He has held key engineering and research leadership positions, including work on next-generation aircraft concepts and climate modeling tools. Neil holds a Ph.D. in Experimental Aerodynamics and a Master’s in Aerospace Engineering, both from the University of Cambridge.
Andy Jefferson is an independent consultant and a Director of A&G Jefferson Limited, the consultancy he jointly set up in 2012. Within the aviation sector he promotes sustainable development and assists companies in tackling environmental issues. For those in other sectors developing innovative ideas and technology on environmental and sustainability issues he supports them in developing links to the aviation industry. For over 10 years he has supported Sustainable Aviation to drive and deliver their work programme, giving them their independent voice.
Leigh Hudson is Head of Carbon Markets within International Airlines Group’s Sustainability team, which is responsible for setting strategy and policy for the group. Leigh works on policy work relating to sustainable fuels, carbon markets, carbon capture and storage and non-CO2. She is a member of the International Civil Aviation Organisation’s Fuels working group which sets the standards for CORSIA eligible fuels. Leigh is a Fellow of the Royal Society of Chemistry and works on developing the group’s investments and offtakes to deliver against IAG’s Net Zero targets.
Dr Chris Dudfield is the Chief Technology Officer and a member of the management team at Intelligent Energy, where he has worked since the launch of the business in 2001. During his time at the company Chris has held several positions including R&D Director, Director of Operations and Director of Programmes. Chris has worked continuously in the field of fuel cell technology since 1990, covering experience in fuel cell stack, fuel processing and fuel cell systems technology. He has extensive knowledge and expertise of fuel cell and hydrogen generation technologies including applications across stationary power, motive and portable power markets.
Chris is a Fellow of the Royal Society of Chemistry and holds Chartered Chemist and Chartered Scientist professional status.
Alexandra Härmatis is an experienced carbon trader who has been with Vertis Environmental Finance since 2017. Her areas of expertise include environmental commodities, with a particular focus on ETS and CORSIA. Before joining Vertis, Alexandra held roles such as Partner Account Manager at Fujitsu Technology Solutions and Team Supervisor at SELLBYTEL Group. Ms. Härmatis holds a Bachelor of Business Administration in Hospitality Management from Lund University School of Economics and Management.
Sophia is Director EU & UK Government Affairs, Policy & Sustainability at LanzaJet, where she is responsible for the strategy and delivery of advocacy initiatives to scale a sustainable domestic SAF industry and market across Europe, translating regulations for project development and contributing to business strategy. Prior to joining LanzaJet,
Sophia has held leadership positions across the renewable fuels & energy sector, including at renewable fuels producer Dimeta, covering the UK, Europe and United States, and at Liquid Gas UK, where she led the work on a pathway for the UK LPG industry to transition to renewable alternatives. Sophia is a committed and active member of the European Advanced Biofuels Coalition, serving on their board and as Chair during 2023 and 2024, representing advanced biofuel producers and its value chain, across road, marine and aviation sectors, with EU policy makers. She has represented companies and industries in a variety of European and Global Initiatives, such as COP28 in Dubai and at the G7 2024 in Turin, and regularly contributes thought leadership and opinion pieces to the media on energy and renewables topics.
Maxime Meijers is the CEO and Co-founder of Estuaire, a climate impact data platform focused on reducing aviation emissions. With a background in urban air mobility at Airbus, Maxime now works with airlines, airports, financiers, and OEMs to help them integrate both CO₂ and non-CO₂ emissions such as contrails into their sustainability strategies.
Polona Gregorin is the head of unit Mobility: Air, Rail, Water and Intermodal Policy in the European Commission’s Directorate-General for Climate Action. Previously, she was the deputy head of unit for ETS Policy Coordination and International Carbon Markets. She has been involved in the European Commission’s work on the EU Emissions Trading System (ETS) since 2008. Now her work focuses on implementing the ETS revision for aviation and ETS extension to maritime emissions.