Casts
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
