Leo Johnson is the co-Founder of Sustainable Finance, and founder of the urban wine-making cooperative "Unthinkable Drinkable Brent". He is a Visiting Fellow at the Smith School of Enterprise & Environment at Oxford and co-author of "Turnaround Challenge: Business & the City of the Future" (OUP 2013). He is the co-Founder of Photo London, and of the Prix Pictet, the global prize for photography on sustainability. He is a regular presenter of the BBC World News programme "One Square Mile".