Srinivasa Ramanujan

Dev Patel

Acting

G. H. Hardy

Jeremy Irons

Acting

Littlewood

Toby Jones

Acting

Janaki

Devika Bhise

Acting

Sir Francis Spring

Stephen Fry

Acting

Major MacMahon

Kevin McNally

Acting

Bertrand Russell

Jeremy Northam

Acting

Howard

Anthony Calf

Acting

Beglan

Pádraic Delaney

Acting

Chandra Mahalanobis

Shazad Latif

Acting

Scribe

Roger Narayan

Acting

Komalatammal

Arundathi Nag

Acting

Narayana Iyer

Dhritiman Chatterjee

Acting

Vice Master Henry Jackson

Richard Johnson

Acting

Narasimha

Raghuvir Joshi

Directing

Professor Cartwright

Malcolm Sinclair

Acting

Dr. Muthu

San Shella

Acting

Hobson

Richard Cunningham

Acting

Baker

Thomas Bewley

Acting

Student

Pip Barclay

Acting

Porter

David Shaw-Parker

Acting

Waiter

Dominic Cazenove

Acting

Andrew Hartley

Nicholas Agnew

Acting

Grocer

Alan Booty

Acting

Postal Worker

Shenagh Govan

Acting

Cadet

Alexander Forsyth

Acting

Doctor

Enzo Cilenti

Acting

Hospital Nurse

Elaine Caulfield

Acting

Hospital Doctor

Alex Bartram

Acting

J. J. Thompson

Christopher Ravenscroft

Acting

Nursie (uncredited)

Imogen Sage

Acting