Richard Dawkins
Daniel Dennett
Sam Harris
Christopher Hitchens
Annie Laurie Gaylor
Leslie Cannold
PZ Myers
Lawrence Krauss
Eugenie Scott
Peter Singer
Catherine Deveny
Dan Barker
Fiona Patten
Lawrence Leung (MC)
Kylie Sturgess (MC)
Tanya Smith
Ayaan Hirsi Ali
David Nicholls
Jason Ball
A.C. Grayling
Mr Deity
Emma McKenna
Craig Foster
Shelley Segal
Stella Young
Ben Elton
Tom Ballard
Derek Guille
Dick Gross
Colleen Hartland
Marion Maddox
Simon Taylor
Jim Jefferies
Mikey Robins
Geoffrey Robertson Q.C.