“Jack is an innovation consultant who walks the talk. He is constantly innovating his own business activity, its design and aims. He is ‘the person’ to talk to for large group interventions, for whole system change and innovation. I attended a five day Open Space conference that Jack facilitated. It set me on a new path in life. Jack is highly committed and skilled, challenging and truly creative. Jack thinks deeply about innovation and transformation. He has developed a range of propositions about innovation which can lead to new insights on the topic. He understands creativity and innovation and has developed practical ways to develop innovativeness in organisations. Jack’s views tap into the wild and the wonderful as well as the rational. He likes to shake things up, and to help that shaking to happen quickly. He doesn’t mess about! You won’t always find it easy working with Jack because he is one of that rare breed — an authentic agent of change and innovation who is prepared for things to get harder before they get easier.”
Paul Levy

Paul Levy, a senior fellow at University of Brighton – Centre for Change, Entrepreneurship and Innovation Management, and the founder of Rational Madness Theatre Company, FringeReview and CATS3000.
“For three decades Jack has been the go-to walking encyclopaedia of the very best and most innovative management and organization theory. He is second to none in comparing, contrasting, and critiquing models, explaining complex management thinking simply and memorably, and turning ideas into effective practice. A sophisticated thinker of this calibre and breadth of knowledge who is also a skilled practitioner, is these days something of a rarity.”
James Wilk

Dr. James Wilk MA Oxf, MSc Oxf, PhD, FCybS, University of Oxford.
“I have known Jack well for many years, as a client, colleague and friend. His knowledge and enthusiasm for his work are unequalled and his originality and client focus exemplary.”
Bob Janes

Bob Janes, formerly Change Director at ICI Melinex Europe; currently a co-owner of Revell & Janes, a coaching, training and consulting business.
“I have worked with Jack Martin Leith for 20 years. He has one of the most brilliant, penetrating, erudite, and practical minds I know. With his exceptional experience of innovation, large group work and organisation development, he is a terrific partner for clients and consultancies with major projects.”
Angus Jenkinson

Angus Jenkinson, formerly Professor of Integrated Marketing at University of Bedfordshire; currently a trustee at The Cybernetics Society and founder of Thinking.
“Jack worked with the Shell GameChanger team to design and deliver innovation workshops in Rijswijk, Netherlands (with a large group of first assignees); in Moscow, Russia (with scientists from a range of scientific institutions); and in Trondheim, Norway (with academics from Norwegian University of Science and Technology). His understanding of the issues, passion for innovation and down-to-earth approach made a valuable contribution to GameChanger.”
Math Kohnen

Dr. Math Kohnen, formerly a member of the Group Strategy unit at Royal Dutch Shell and a vice president at Shell GameChanger.
“I dislike the term ‘jack-of-all trades’ because it comes with an unspoken ending ‘… and master-of-none’. In Jack’s case, I would end with ‘… and master of many’.”
Tom Bourner

Tom Bourner, Emeritus Professor of Personal and Professional Development, University of Brighton, UK.
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