William Mannering

as Lord Alfred Rufford

as Jeffrey Clymer (2 episodes)

as Sebastian

as Dr. Malcolm Speight (1 episode)

as Benvolio/Second Scholar

as Longaville

as Faster Doudle, Able Seaman

as Clive Pritchard (1 episode)

as Harold (6 episodes)

as Ralph (4 episodes)

as Milton (3 episodes)

as Cleomenes

as Young Alan Turing

as Nigel Fielding (1 episode)

as Simon (6 episodes)

as Yves Hugonin

as Kit Nubbles

as Yves Hugonin (1 episode)

as Ensign Matthews

as Ensign William Matthews (1 episode)

as Jeffrey / Jeff

as Captain (13 episodes)

as Ben Ealham (1 episode)

as Adam (1 episode)

as Gareth Price (1 episode), as Jamie Joyce (1 episode)