as Lord Alfred Rufford
as Jeffrey Clymer(2 eps)
as Sebastian
as Dr. Malcolm Speight(1 ep)
as Benvolio/Second Scholar
as Longaville
as Faster Doudle, Able Seaman
as Clive Pritchard(1 ep)
as Harold(6 eps)
as Ralph(4 eps)
as Milton(3 eps)
as Cleomenes
as Young Alan Turing
as Nigel Fielding(1 ep)
as Simon(6 eps)
as Yves Hugonin
as Kit Nubbles
as Yves Hugonin(1 ep)
as Ensign Matthews
as Ensign William Matthews(1 ep)
as Jeffrey / Jeff
as Captain(13 eps)
as Ben Ealham(1 ep)
as Adam(1 ep)
as Gareth Price(1 ep)
as Jamie Joyce(1 ep)