Keynote and Motivational

Co-founder of OLIO- a hugely popular app which enables users to locate persons to share their unneeded food. Through her philanthropic efforts, over 1 million users have given away 3 million portions of food and counting. Tessa's goal for OLIO is to create a world where every single person has enough to eat.

Tessa Clarke

Veteran Conservative MP and former cabinet minister who has served in a number of administrations as Chancellor, Home Secretary, Lord Chancellor and Justice Minister; keen jazz fan

Kenneth Clarke

Successful business author and speaker who spent many years as a project manager, integrating change in complex organisational settings.

Mike Clayton

Inspirational and motivational speaker who teaches people to create inspiration, focus and motivation for themselves. His consulting, coaching and inspirational speaking career has seen him work with over 300 clients in more than 20 countries.

Alan Clayton

Young and exciting physicist, who is a speaker and curator of the Collider exhibition. Makes complex science accessible.

Harry Cliff

Professor Roland Clift - a member of the UK Ecolabelling Board and of the "Groupe des Sages" which advises the European Commission on aspects of Ecolabelling

Roland Clift

Brand guru, author and international speaker on leadership, corporate reputation, innovation and communicating sustainability, as well as all aspects of branding and marketing.

Rita Clifton

Competed with James Cracknell and Ben Fogle in a gruelling race to the south pole in 2009, overcoming frostbite and the bitterest conditions to finish 2nd. A doctor of obstetrics, Ed talks on becoming learner to leader, knowing when to change strategy and how to work in newly formed teams.

Ed Coats

Dan Cobley is the former head of European Marketing and Managing Director for the UK & Ireland at Google. Now CEO of the newly-launched Brighbridge Capital

Dan Cobley

Sara is a freelance broadcaster who works with the BBC on a variety of business programmes including BBC's World's World Business Report.

Sara Coburn

The former Head of Research at BT and one of the world's most respected and sought-after futurists. He speaks on technology, change and the future effects of change on corporations, individuals and society.

Peter Cochrane

Graeme Codrington is an expert on the future of work and the disruptive forces that are shaping it. As an author and researcher, his insights and analysis are sought after by business schools and CEOs around the world, with five degrees, four best selling books and a full-time research team at his company, TomorrowToday.

Graeme Codrington

Led and delivered the London 2012 Olympics, perfectly demonstrating his sporting, political and business skills. He is now at the IOC where he is undertaking a huge turnaround programme, again drawing on his many diplomatic skills which has seen him go from Olympic Gold Medallist to successful businessman, politician and now sports administrator.

Sebastian Coe

Registered sport and exercise psychologist who is the head of the London Sport Institute at Middlesex University. An expert on the psychology of enhancing performance, she has worked for the likes of Tottenham Hotspur and Saracens and has appeared on the BBC's Inside Sport programme.

Rhonda Cohen

Uses his various talents as a motivator, business consultant, life strategist and bestselling author to be one of the most sought after speakers on personal development.

Pete Cohen