Longitude

Michael Gambon

John Harrison

Jeremy Irons

Rupert Gould

Gemma Jones

Elizabeth Harrison

Anna Chancellor

Muriel Gould

Foto Yok

Emma Kay

Laura Gurney

Barbara Leigh-Hunt

Dodo Gould

Peter-Hugo Daly

John Jefferies

Alec McCowen

Sir Frank Dyson

Foto Yok

Kevin Hudson

Lieutenant (uncredited)