Todd Jensen as Ashley

Samantha Womack as Louise

Oliver Tobias as Moore

Kadamba Simmons as Space Girl

Nigel Harrison as Horace

Clifton Lloyd Bryan as Alien

Melanie Walters as Roper

Katy Lawrence as Myra

Richard Harrington as Jack

Robert Gwyn Davin as Staines

Geraint Morgan as Poole

Graham Anderson as Taylor

John Danks as Police Sergeant

Amanda Prothero-Thomas as Styles

Paul Moulton as Archer

Phil Bird as Riley

Paul Barker as Grey

Ian Parkinson as Policeman

Wendy Cooper as Mutant Leader

Laura Howland as Mutant

Martina McAnee as Mutant

Victoria Kearsley as Mutant

Sarah Callow as Mutant

Crystal Dawn as Mutant

Katie Monroe as Mutant

Miranda Hall as Mutant

Linsey Tickell as Mutant

Helena Osbourne as Mutant

David Artus as Talbot