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Neuroscientist and philosopher

Philippa Gregory

Bestselling Author

Slavoj Žižek

Maverick Philosopher

Carla Denyer

Co-leader of the Green Party

Roger Penrose

Nobel prize-winning physicist

Sadiq Khan

Mayor of London

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Britain's Strictest Headmistress

Will Hutton

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Myriam François

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Bessel van der Kolk

Boundary-pushing psychologist

Nadhim Zahawi

Former chair of the Conservative Party

John Bercow

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Ruby Wax

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Stanford medic

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Youtube Science Star

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Award-winning broadcaster

Bill Browder

Putin adversary

Gary Stevenson

Top trader turned activist

Anders Sandberg

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Sam McAlister

BBC producer and 'Scoop' author

Daniel Susskind

Leading big-picture economist

Mary Ann Sieghart

Stalwart public intellectual

Aaron Bastani

Journalist and founder of Novara Media

Marcus Du Sautoy

Mathematician and best-selling author

David Aaronovitch

Award-winning journalist

Tariq Ali

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Faiza Shaheen

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Hilary Lawson

Post-postmodern philosopher

Malcolm Rifkind

Former Foreign Secretary

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Outspoken political commentator

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Eminent psychotherapist

Guy Standing

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Megha Rajagopalan

Pulizer Prize Winning Reporter

Lindsey Hilsum

Channel 4 Foreign Editor

Peter Godfrey-Smith

Philosopher and author of 'Other Minds'

Frank Tallis

Psychotherapist and award-winning author

Uriel Abulof

Scholar of the politics of emotion

Clare Chambers

Best-selling feminist philosopher

Socrates Mokkas

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Freya India

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Founder and host of Theories of Everything YouTube channel

Jack Symes

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Prominent astrophysicist

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Rose Cartwright

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Youtuber and astrophysicist

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Renowned psychologist

Roger Hearing

BBC Bussiness Presenter

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Director at Theos

Graham Priest

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Güneş Taylor

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Author of 'Milk'

Samir Okasha

Pioneering philosopher of science

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Martín López Corredoira

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Editor of the New Humanist

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Poet and author of 'Loop of Jade'

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Wellness Director UK Women's Health

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New Scientist's culture editor

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Jacob Stegenga

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Director of Oneworld Publications