David Carling
as Station Officer Steele / Mike Flood
Steven Kynman
as Sam / Elvis / Norman
Colin McFarlane
as Malcolm
Kerry Shale
Denise Van Outen
as Professor Polonium
Tegwen Tucker
as Penny / Sarah
John Hasler
as Arnold / James
Gary Andrews
as Gareth Griffiths
Harriet Kershaw
as Ellie / Bella
Sasha Behar
as Rose Ravani
Nigel Whitmey
as Moose Roberts