Kevin Duncan is a business adviser, marketing expert, and bestselling author. His books have been translated into over a dozen languages. He is the author of The Diagrams Book, The Ideas Book, The Excellence Book, The Smart Thinking Book, The Business Bullshit Book, The Intelligent Work Book, The Bullshit-Free Book and The Sustainable Business Book (all published by LID).
Sarah Duncan is a sustainable business development and ethical marketing consultant. She has been in business for over 30 years and set up her own consultancy, Sleeping Lion, in 2005. She now helps businesses navigate their way through the world of business ethics and sustainability with advice, support and bespoke workshops. She is the author of The Ethical Business Book (LID).