Dev Patel
Srinivasa Ramanujan
Acting
Jeremy Irons
G. H. Hardy
Acting
Toby Jones
Littlewood
Acting
Devika Bhise
Janaki
Acting
Stephen Fry
Sir Francis Spring
Acting
Kevin McNally
Major MacMahon
Acting
Jeremy Northam
Bertrand Russell
Acting
Anthony Calf
Howard
Acting
Pádraic Delaney
Beglan
Acting
Shazad Latif
Chandra Mahalanobis
Acting
Roger Narayan
Scribe
Acting
Arundathi Nag
Komalatammal
Acting
Dhritiman Chatterjee
Narayana Iyer
Acting
Richard Johnson
Vice Master Henry Jackson
Acting
Raghuvir Joshi
Narasimha
Directing
Malcolm Sinclair
Professor Cartwright
Acting
San Shella
Dr. Muthu
Acting
Richard Cunningham
Hobson
Acting
Thomas Bewley
Baker
Acting
Pip Barclay
Student
Acting
David Shaw-Parker
Porter
Acting
Dominic Cazenove
Waiter
Acting
Nicholas Agnew
Andrew Hartley
Acting
Alan Booty
Grocer
Acting
Shenagh Govan
Postal Worker
Acting
Alexander Forsyth
Cadet
Acting
Enzo Cilenti
Doctor
Acting
Elaine Caulfield
Hospital Nurse
Acting
Alex Bartram
Hospital Doctor
Acting
Christopher Ravenscroft
J. J. Thompson
Acting
Imogen Sage
Nursie (uncredited)
Acting