Christopher Colquhoun

as Harry

as Edmund Lennox (1 episode)

as Paul McGuire (62) (1 episode)

as Teddy Sloane (1 episode)

as Agent Derek Crown (30 episodes)

as Dr. Bale

as Gavin Nichols (1 episode)

as Doctor (1 episode)

as Steve (1 episode)

as Jack Grew (2 episodes)

as Dr Anthony Carmichael (4 episodes)

as Jonathan

as ACC James Morrison (1 episode)

as Blake Keswick (1 episode)

as Luke Hutchens (2 episodes), as Simon Kaminski (54 episodes)