| Credited cast: |
 | Declan Donnelly | - | Himself - Host (as Ant & Dec) |
 | Anthony McPartlin | - | Himself - Host (as Ant & Dec) |
 | Paul O'Grady | - | Lily Savage (as Lily Savage) |
| Rest of cast listed alphabetically: |
 | 3T | - | Themselves - Performers |
 | Peter Andre | - | Himself - Winner, Best Male Singer Award |
 | Paul Arthurs | - | Himself (archive footage) |
 | Mel B | - | Herself (as Melanie Brown) |
 | Backstreet Boys | - | Themselves - Performers |
 | Victoria Beckham | - | Herself |
| Easther Bennett | - | Herself |
| Vernie Bennett | - | Herself |
 | Boyzone | - | Themselves - Winner, Best Band In The Universe Award, Best Single Award & Best Album Award |
| James Dean Bradfield | - | Himself |
| Brother 2 Brother | - | Themselves - Winner, Best Roadshow Act Award |
 | Kelle Bryan | - | Herself |
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