Paul Polman

Business Leader; Climate & Equality Campaigner; Co-Author of “Net Positive”

Emma Watson

Actress, Model & Activist; UN Women Goodwill Ambassador; Co-Founder of the HeForShe Campaign

Maajid Nawaz

Counter-Extremism Activist

Bill Browder

Founder & CEO of Hermitage Capital Management; Human Rights Activist; Bestselling Author of "Red Notice"

Peter Gabriel

Singer-Songwriter & Musician; Humanitarian; Founder of Witness.org, Co-Founder of WOMAD & The Elders

Deeyah Khan

Activist & Emmy Award Winning Documentary Filmmaker, CEO of Production Company Fuuse

John Browne

Former CEO of BP & Author of "The Glass Closet: Why Coming Out Is Good Business"

Leona Lewis

Singer, Songwriter & Animal Welfare Activist; Best Known for "Bleeding Love"

Paul McCartney

Former Member of The Beatles; One of the Most Successful Composers & Performers of All Time

Ben Whishaw

Actor, Known for "Skyfall" and "A Very English Scandal"

Meaghan Ramsey

Chief People Officer & Partner at Brunswick Group

Why thinking you're ugly is bad for you - Meaghan Ramsey - TED

Sir Ian McKellen

Actor & Activist

Chrissie Hynde

Singer, Songwriter, and Musician; Best Known as the Lead Singer of the Rock Band "The Pretenders"

Chris Evans

BBC Radio Host and Host of "Top Gear"

Daniel Reisel

Neuroscientist

Andrew Hodges

Mathematician, Gay Rights Activist & Author of "Alan Turing: The Enigma," Which was Adapted into the Film "The Imitation Game," Starring Benedict Cumberbatch

Niklas Zennström

CEO and Founding Partner at Atomico and Founder of Skype

A.C. Grayling

Best-Selling Author & Leading Commentator on Education, Philosophy, Corporate Ethics and Biomedicine

Kele Okereke

British Musician; Former Frontman of Bloc Party and Electronic Solo Artist

Liam Dryden

Scottish Internet Personality; Known as a Part of the Band Chameleon Circuit and as Kai in "Chronicles of Syntax"