Simon Birkett is founder and director of Clean Air in London, which has a mission to achieve full compliance with World Health Organisation guidelines for air quality throughout London and elsewhere. Between 2015 and 2019, Simon was the air pollution stakeholder on the High Level Intergovernmental Stakeholder and Advisory Group for UNEP's sixth global environment outlook (GEO6). He champions a 'One Air' approach, which advocates fighting climate change and air pollution together.

Jon Usher is an expert in transport policy and delivery with over 15 years of experience in sustainable transport development. He works with senior leaders in multiple sectors across the south of England and has delivered multi-million-pounds projects that make it easier for people to walk and cycle.

Ally Elphick is a Bristol-based Copywriter and Brand Strategy Consultant, who supports brands seeking to forge a more sustainable future for people and planet, together. When she's not reporting on emerging trends or exploring how her clients can better communicate their purpose, she's tending to her veg plot or making a dash to the coast for weekends spent surfing from the comfort of her campervan.