Ian Theasby and Henry Firth are the founders of BOSH!, the largest plant-based video channel on Facebook. They both adopted a plant-based lifestyle and in 2016 they started BOSH!, which now reaches more than twenty-six million people a month.

They are the authors of the international bestseller BOSH! and the forthcoming BISH BASH BOSH! and Bosh!: How to Live Vegan. Best friends, Henry and Ian now live and work together at their BOSH! studio in London.