Proctor John Wood – Edmond Halley Ian McNeice – Dr Bliss David Wood – Ditton Mark Tandy – Whiston Stephen Fry – Sir Kenelm Digby Samuel West – Nevil Maskelyne Bill Nighy – Lord Sandwich Brian Cox – Lord Morton Peter Vaughan – George Graham Clive Francis – Capt. Digges Tim McInnerny – Christopher Irwin Stephen Simms – James Harrison Cliff Parisi – Lt. Draper Rupert Baker – Lt. Bertie Charles Gray – Adm. Balchen Trevor Cooper – Roger Willis William Scott-Masson – Lt. Knorvler William Thomas – Arthur Mason Ian Burfield – Jos Killick John Quentin – Dr. Bradley Alfred Burke – Rear Admiral Nicholas Rowe – Jerzy III Hanowerski Heike Makatsch – Charlotta Mecklenburg-Strelitz Jeremy Irons – Rupert Gould Peter Cartwright – Army doctor Anna Chancellor – Muriel Gould Geoffrey Hutchings – Estate manager Robert Demeger – Observatory porter Sarah Badel – Society lady Alec McCowen – Sir Frank Watson Dyson Sophie Millett – Dyson's secretary Lucy Akhurst – Nurse Grace Ingram Michael Cochrane – Waddington, Gould's solicitor John Leeson – BBC radio producer Peter Penry-Jones – Surgeon Sasha Hails – BBC PA John Normington – Mr. Greene Rebecca Clay – Observatory assistant Richard Janes – Young assistant Faith Kent – Lady curator John Quayle – Dr.