Stephen Hawking
Jane Hawking
Jonathan Hellyer Jones
Beryl Wilde
Frank Hawking
Dennis Sciama
Elaine Mason
Brian
Robert Hawking (Age 17)
Lucy Hawking (Age 14)
Timothy Hawking (Age 8)
Diana King
Carter
Ellis
Rees
Barman - Rowing Club
George Wilde
Mary Hawking
Philippa Hawking
Isobel Hawking
Physicist #1
Physicist #2
Physicist #3
Roger Penrose
Senior Doctor - Cambridge Hospital
Bedder
Robert Hawking (New Born)
Kip Thorne
Robert Hawking (Age 2)
Lucy Hawking (New Born)
Eileen Bond
John Taylor
Khalatnikov
Robert Hawking (Age 8)
Lucy Hawking (Age 6)
Timothy Hawking (Baby)
Sarah (Geneva Student)
Swiss Doctor
Technician
Female Fan
Cockcroft Guest #2
Cockcroft Guest #3
Cockcroft Guest #5
Cockcroft Guest #4
Cockcroft Guest #1
Undergraduate (uncredited)