Eddie Redmayne
James Glaisher
Felicity Jones
Amelia Wren
Tom Courtenay
Arthur Glaisher
Phoebe Fox
Antonia
Himesh Patel
John Trew
Rebecca Front
Aunt Frances
Robert Glenister
Ned Chambers
Vincent Perez
Pierre Rennes
Anne Reid
Ethel Glaisher
Lewin Lloyd
Charlie
Tim McInnerny
Airy
Thomas Arnold
Charles Green
Elsa Alili
Antonia's Daughter #1
Connie Price
Antonia's Daughter #2
Gunce Ates
Villager Mary (uncredited)
Abbey Butler
(uncredited)
Julian Ferro
Peddler (uncredited)
Kamil Lemieszewski
Scientist of Royal Society (uncredited)
John Taylor
English Gentleman (uncredited)
Robert Ryan
Royal Society Man
Lisa Jackson
Poppy
Oliver Simms
Scientist (uncredited)