Sir Edward Jonathan Davey is a British politician who has served as Leader of the Liberal Democrats since 2020, having acted in the position from 2019 to 2020. He served in the Cameron–Clegg coalition as Secretary of State for Energy and Climate Change from 2012 to 2015 and as Deputy Leader to Jo Swinson in 2019. An "Orange Book" liberal, he has been the Member of Parliament (MP) for Kingston and Surbiton since 2017, and served in the same role from 1997 to 2015.

Christopher Murray Paul Huhne is a British energy and climate change consultant, and former journalist, business economist and politician who was the Liberal Democrat Member of Parliament for Eastleigh from 2005 to 2013 and the Secretary of State for Energy and Climate Change from 2010 to 2012. He is currently chair of the UK green gas association – the Anaerobic Digestion and Bioresources Association – and senior adviser to the World Biogas Association. He also advises companies on his particular interest in renewable technologies that can provide back up for intermittent energy sources like wind and solar.