The Diagrams Book has sold over 50,000 copies, and become an international best seller. It has topped the charts in WHSmith, Foyles and Waterstones, and done the same in Germany and Korea. 

It has been translated into Korean, German, Spanish, Japanese, Complex Chinese (Taiwan), and there is a special Indian version. Other editions on the way include Chinese (simple), Thai, Russian, Portuguese, Hungarian, Swedish, and Dutch.

The 5th anniversary edition is now out, and includes brand new material.

Kevin’s “How to do X with Diagrams” series of speeches and training have already been experienced by over 3,000 people. Combined with The Ideas Book, it makes a powerful training course in how to have a Point of View and a persuasive Line of Argument. Satisfied customers include News UK, Discovery Channel, The Guardian, EE, Strutt & Parker, Royal Mail, Maxus, Mindshare, Carat, Publicis, Yahoo!, Havas, Moonpig and JWT.