| Cast list |
| Ant McPartlin | as | Himself |
| Declan Donnelly | as | Himself |
| Zoë Ball | as | Herself |
| Lenny Henry | as | Himself |
| Jonathan Ross | as | Himself |
| Graham Norton | as | Himself |
| Sarah Alexander | as | (segment Popsters) |
| Rowan Atkinson | as | (Popsters segment) |
| David Baddiel | as | Himself |
| Sacha Baron Cohen | as | Himself / Ali G |
| David Beckham | as | Himself |
| Victoria Beckham | as | Herself |
| Angela Bruce | as | (EastEnders segment) |
| Rob Brydon | as | Keith Barret |
| Emma Bunton | as | Herself (Popsters segment) |
| Kathy Burke | as | Linda La Hughes |
| Billy Connolly | as | Himself |
| Steve Coogan | as | Alan Partridge |
| Annette Crosbie | as | Margaret Meldrew |
| Cat Deeley | as | Herself |
| James Dreyfus | as | Tom Farrell |
| Jenny Eclair | as | Writer (EastEnders segment) |
| Harry Enfield | as | Himself |
| Stephen Fry | as | Himself |
| Graeme Garden | as | Writer (EastEnders segment) |
| Lesley Garrett | as | Herself |
| Jerry Hall | as | Herself (EastEnders segment) |
| Charlie Higson | as | Ralph |
| Harry Hill | as | Himself |
| Emily Joyce | as | Janet Dawkins |
| Peter Kay | as | Himself (Alan Partridge segment) |
| Ronan Keating | as | (Popsters segment) |
| Barry Killerby | as | Mr. Blobby (unconfirmed) |
| Bonnie Langford | as | Herself |
| Helen Lederer | as | Herself (EastEnders segment) |
| Davina McCall | as | Herself |
| Victor McGuire | as | (Popsters segment) |
| Bob Mortimer | as | Himself |
| Trude Mostue | as | Herself |
| Mo Mowlam | as | Herself |
| Anna Nolan | as | Nun |
| Bill Oddie | as | Writer (EastEnders segment) |
| Ardal O'Hanlon | as | George Sunday /Thermoman |
| Dermot O'Leary | as | Himself |
| Simon Pegg | as | Himself (Popsters segment) |
| Sally Phillips | as | PA (EastEnders segment) |
| Gail Porter | as | (Popsters segment) |
| Daniel Radcliffe | as | Himself |
| Vic Reeves | as | Himself |
| Anne Robinson | as | Herself |
| Tony Robinson | as | Himself |
| Peter Serafinowicz | as | Himself (Popsters segment) |
| Jay Simon | as | Satanist |
| Frank Skinner | as | Himself |
| Mel Smith | as | Colin |
| Jamie Theakston | as | Himself (Rock Profile segment) |
| Julie Walters | as | Herself |
| Paul Whitehouse | as | Ted |
| Robbie Williams | as | Himself |
| Richard Wilson | as | Victor Meldrew |
| Dale Winton | as | Himself (Segment: 1000-1) |
| Victoria Wood | as | Herself |
