Darsteller
Benedict Cumberbatch (Stephen Hawking), Michael Brandon (Arno Penzias), Tom Hodgkins (Bob Wilson), Lisa Dillon (Jane Wilde), Phoebe Nicholls (Isobel Hawking), Adam Godley (Frank Hawking), Peter Firth (Sir Fred Hoyle), Tom Ward (Roger Penrose), John Sessions (Dennis Sciama), Rohan Siva (Jayant Narlikar), Matthew Marsh (Dr. John Holloway), Anastasia Hille (Schwester Susan McClean), Bertie Carvel (George Ellis), Christian Pederson (Interviewer/Reporter), Deirdre Costello (Bardame), Alice Eve (Martha Guthrie), Daniel Pape (TV-Produzent), Linda Spurrier (Zugfahrgast), Mark Wells (Radfahrer), Rory Copus (Edgar), Charlie Beall (Hugh), Carolina Giammetta (Lidia Sciama), Philip McGinley (Chris), David McKail (Frink), James Warrior (Taxifahrer)