| Episode credited cast: |
 | Dermot O'Leary | - | Himself - Presenter |
 | Louis Walsh | - | Himself - Judge |
 | Mel B | - | Herself - Judge (as Melanie Brown) |
 | Cheryl | - | Herself - Judge |
 | Simon Cowell | - | Himself - Judge |
 | Peter Dickson | - | Himself - Voice Over |
 | Brian Friedman | - | Himself - Creative Director |
 | Stefan Gordy | - | Himself - Audience Member |
 | Sarah Harding | - | Herself - Audience Member |
| Rest of cast listed alphabetically: |
| Paul Akister | - | Himself - Contestant |
| Barclay Beales | - | Himself - Contestant |
| Reece Bibby | - | Himself - Contestant |
| Fleur East | - | Herself - Contestant |
| Betsy-Blue English | - | Herself - Contestant (as Only The Young) |
| Andrea Faustini | - | Himself - Contestant |
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