Henry is founder and Chief Happiness Officer of Happy Ltd, originally set up as Happy Computers in 1987. Inspired by Ricardo Semler’s book Maverick, he has built a company which has won multiple awards for some of the best customer service in the country and being one of the UK’s best places to work.

Henry was listed in the Guru Radar of the Thinkers 50 list of the most influential management thinkers in the world. “He is one of the thinkers who we believe will shape the future of business,” explained list compiler Stuart Crainer.
 
His first book, Relax, was published in 2009. His second book, The Happy Manifesto, was published in 2013 and was short-listed for Business Book of the Year. His latest book, Creating Joy at Work: 501+ ideas for a happy workplace was released in 2025 and is filled with ways that people around the world have implemented workplaces based on empowerment and working to strengths.