Host

Dara O'Briain

Himself - Presenter

Professor Mark Miodownik

Alok Jha

Herself - Presenter

Helen Czerski

Herself - Presenter

Tali Sharot

Himself

Ed Byrne

Himself

Marcus Brigstocke

Herself

Janna Levin

Himself

Mark Steel

Himself

Josh Widdicombe

Herself

Jessica Hynes

Herself

Uta Frith

Himself

James May

Himself

Noel Sharkey

Himself

Bruce Hood

Herself

Emma Teeling

Himself

Max Tegmark

Herself

Hilary Geoghegan

Himself

James Logan

Herself

Molly Crockett

Himself

Michio Kaku

Herself

Sally Davies

Herself

Jo Dunkley

Himself

Ian Henderson

Herself

Molly Stevens