| Episode credited cast: |
 | Kate Thornton | - | Herself - Presenter |
 | Simon Cowell | - | Himself - Judge |
 | Sharon Osbourne | - | Herself - Judge |
 | Louis Walsh | - | Himself - Judge |
| Rest of cast listed alphabetically: |
| Jonathan Ansell | - | Himself - Contestant (as G4) |
| Steve Brookstein | - | Himself - Contestant (as Steve) |
| Tabby Callaghan | - | Himself - Contestant (as Tabby) |
| Michael Christie | - | Himself - Contestant (as G4) |
 | Mark Hudson | - | Himself |
| David Laudat | - | Himself |
| Terry Longden | - | Himself |
| Rowetta Satchell | - | Herself - Contestant (as Rowetta) |
 | Sinitta | - | Herself |
| Annie Skates | - | Herself |
| Matthew Stiff | - | Himself - Contestant (as G4) |
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