Terry Potter

Ozzy / 3rd Class Alien

Pete O'Herne

Barry / 3rd Class Alien

Craig Smith

Giles / 3rd Class Alien

Mike Minett

Frank / 3rd Class Alien

Peter Jackson

Derek / Robert

Doug Wren

Alien Leader

Peter Vere-Jones

Alien Leader (voice)

Ken Hammon

3rd Class Alien

Robin Griggs

3rd Class Alien