Casting | Rôle |
|---|
| Sally Phillips | Self - Narrator (voice) |
| Jay Aston | Self - Singer / Eurovision Winner 1981, Bucks Fizz |
| Chris Brooks | Self - Heart FM |
| Yvie Burnett | Self - Vocal Coach, X Factor, Charlotte Church & Susan Boyle |
| Nicki Chapman | Self - Judge, Popstars / Pop Idol |
| Barry Cryer | Self - Comedy Writer |
| Jim Davidson | Self - Contestant, Hell's Kitchen 2007 |
| Tupele Dorgu | Self - Contestant, Soapstar Superstar |
| Matt Evers | Self - Professional Skater, Dancing on Ice |
| Gareth Gates | Self - Singer / Pop Idol Contestant |
| Carrie Grant | Self - Vocal Coach, Pop Idol / Fame Academy |
| David Grant | Self - Vocal Coach, Pop Idol / Fame Academy |
| Russell Grant | Self - Entertainer |
| Michelle Heaton | Self - Contestant, Popstars / Singer |
| Javine Hylton | Self - Contestant, Popstars: The Rivals |
| Bonnie Langford | Self - Contestant, Dancing on Ice 2006 & 2014 / Performer |
| Zoe Lyons | Self - Comedian |
| Joe McElderry | Self - Winner, X Factor 2009 |
| Jon Morter | Self - Social Media Commentator |
| Nina Myskow | Self - TV Critic & Former Talent Show Judge, New Faces |
| Kevin O'Sullivan | Self - TV Critic, Daily Mirror |
| Andy Orr | Self - Contestant, Irish Popstars |
| Richard Park | Self - Head Judge, Fame Academy |
| Jonathan Shalit | Self - Charlotte Church's Former Agent |
| Sinitta | Self - Singer |
| Anthea Turner | Self - Contestant, Dancing on Ice 2013 |
| Louis Walsh | Self - Talent Show Judge, Irish Popstars / Popstars: The Rivals |
| Pete Waterman | Self - Judge, Pop Idol |
| Ann Widdecombe | Self - Contestant, Strictly Come Dancing |
| Susan Boyle | Self (archive footage) |
| Darius Campbell | Self (archive footage) |
| Charlotte Church | Self (archive footage) |
| Cheryl | Self (archive footage) |
| Simon Cowell | Self (archive footage) |
| Nadine Coyle | Self (archive footage) |
| Samia Longchambon | Self (archive footage) |
| Will Young | Self (archive footage) |
| Lena Zavaroni | Self (archive footage) |
| James Fox | Self - Fame Academy (uncredited) |
| Sarah J. Price | Herself - Pop Stars (uncredited) |
| Victoria Wood | Self |
