Alistair Browning

as Mr. Mervyn Williams

as Dieter Szabo (1 episode)

as Benjamin

as Paul Winterson (1 episode)

as Terry

as Mike O'Leary

as Rudolf Young

as Dudley Earnsworth/Mr. Collins

as Blake Edwards

as Craig

as Howard

as Gordon Peet

as Damrod

as Dirksen Thatcher

as Damrod (uncredited)

as Ed

as 'Ali'

as King (1 episode)

as Meniskos (1 episode), as Bronagh (3 episodes)

as Green Monster (voice) (1 episode), as Zenowing (voice) (8 episodes), as Jake (1 episode), as Pollinator (voice) (1 episode)

as Barry Harrison (155 episodes)

as Cram

as Technician 1

as De Jong