Cast
Denise Van Outen
Professor Polonium
Steven Kynman
Sam / Elvis / Charlie / Norman (voice)
John Hasler
Arnold / James (voice)
Colin McFarlane
Malcolm Williams / Map-Screen 700
David Carling
Station Officer Steele / Mike Flood / Tom Thomas / Trevor Evans (voice)
Kerry Shale
Doctor Crumpton (voice)
Sasha Behar
Rose Revani (voice)
Alex Lowe
Joe Sparkes (voice)
Tegwen Tucker
Penny / Sarah / Bronwyn / Mrs. Chen / Teleprinter / Map-Screen 700 (voice)
Harriet Kershaw
Ellie / Bella / Scoop Dooley (voice)
Su Douglas
Dilys / Mandy / Helen (voice)
Nigel Whitmey
Moose Roberts (voice)