
Part 2 S01E02
The ever-reliable Ian Hart appears in Part 2 as Harrison's now-adult son and apprentice, and Longitude approaches its dramatic climax with the exhilarating tension of a first-rate thriller. Rallying after sickness to prove the integrity of their marvelous seafaring chronometers, the Harrisons still had to fight for official recognition, and Gould's restoration of the Harrison clockworks provides a fitting coda to this exceptional story about the thrill of discovery and the tenacity of remarkable men.
Series Cast

Ian Hart
William Harrison

Michael Gambon
John Harrison

Jonathan Coy
Adm. Sir Clowdisley Shovell

Jeremy Irons
Rupert Gould

Peter Cartwright
Army Doctor

Gemma Jones
Elizabeth Harrison

Anna Chancellor
Muriel Gould

Stephen Fry
Sir Kenhelm Digby

Samuel West
Nevil Maskelyne

Ian McNeice
Dr. Bliss

Bill Nighy
Lord Sandwich

Brian Cox
Lord Morton

Barbara Leigh-Hunt
Dodo Gould

Peter-Hugo Daly
John Jefferies

Gary Waldhorn
Commodore Forrest

Tim McInnerny
Christopher Irwin

Hugh Simon
Doctor

Alfred Burke
Rear Admiral

Michael Cochrane
Waddington

Nigel Davenport
Sir Charles Pelham

Roger Lloyd Pack
Capt. Man

Tobias Menzies
Halley's Secretary (uncredited)