Parallel stories: 18th century Harrison builds the marine chronometer for safe navigation at sea; 20th century Gould is obsessed with restoring it.
Michael Gambon
as John Harrison
Jeremy Irons
as Rupert Gould
Ian Hart
as William Harrison (Adult)
Andrew Scott
as John Campbell
Bill Nighy
as Lord Sandwich
Gemma Jones
as Elizabeth Harrison
John Wood
as Sir Edmund Halley
Anna Chancellor
as Muriel Gould
Brian Cox
as Lord Morton
Samuel West
as Nevil Maskelyne
Ian McNeice
as Dr. Bliss
Jonathan Coy
as Adm. Sir Cloudsley Shovell
