Benedict Cumberbatch
Stephen Hawking
Alice Eve
Martha Guthrie
Michael Brandon
Arno Penzias
Tom Hodgkins
Robert Wilson
Peter Firth
Sir Fred Hoyle
Lisa Dillon
Jane Wilde
Phoebe Nicholls
Isobel Hawking
Adam Godley
Frank Hawking
Matthew Marsh
Dr. John Holloway
Anastasia Hille
Nurse Susan McClean
Christian Rubeck
Reporter
Bertie Carvel
George Ellis
John Sessions
Dennis Sciama
Carolina Giammetta
Lidia Sciama
Tom Ward
Roger Penrose
Sebastian Armesto
Robert Silkin
Rohan Siva
Jayant Narlikar
Deirdre Costello
Barmaid
Linda Spurrier
Train Passenger
Anthony Howell
Hamlet
Che Cartwright
Guildenstern
Leon Ockenden
Rosencrantz
James Warrior
Cab Driver
David McKail
Frink
Rory Copus
Edgar
Philip McGinley
Chris
Charlie Beall
Hugh
Mark Wells
Cyclist