James Glaisher

Eddie Redmayne

Amelia Wren

Felicity Jones

Arthur Glaisher

Tom Courtenay

Ethel Glaisher

Anne Reid

John Trew

Himesh Patel

Antonia

Phoebe Fox

Pierre Rennes

Vincent Perez

Aunt Frances

Rebecca Front

Ned Chambers

Robert Glenister

Airy

Tim McInnerny

Charlie

Lewin Lloyd

Charles Green

Thomas Arnold

Royal Society Member

Gianni Calchetti

Antonia's Daughter #1

Elsa Alili

Scientist of Royal Society (uncredited)

Kamil Lemieszewski

Poppy

Lisa Jackson

Antonia's Daughter #2

Connie Price

Peddler (uncredited)

Julian Ferro

Villager Mary (uncredited)

Gunce Ates

(uncredited)

Abbey Butler

Royal Society Member

Steve Saunders

Royal Society Men

Fran Targ

Royal Society Man

Robert Ryan

English Gentleman (uncredited)

John Taylor

Child Servant

Mia Hemerling

Upper Class Lady

Irina Klimovich

Scientist (uncredited)

Oliver Simms