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)