Keeley is responsible for low carbon fuels policy in the UK Dept for Transport – covering decarbonisation of both road and aviation fuel. She has worked on development of low carbon fuel policy and legislation for over a decade and has a background as an environmental scientist conducting research into air quality impacts of motor vehicle pollution and biomass combustion.

Grégoire Le Comte joined in the European Commission as Aviation Policy Officer in 2016. He is currently the lead officer in charge of the ReFuelEU Aviation policy initiative, a key deliverable of the European Green Deal, which aims to boost the supply and use of sustainable aviation fuels in European air transport. Since 2018, he has also been active at the International Civil Aviation Organisation, on the topic of aviation fuels. Before that, Grégoire was dealing with the adoption of a new EU regulatory instrument to safeguard the competitiveness of the EU aviation sector, as well as on policy design to ensure business continuity in EU air traffic management.