| Name | Character | Episodes |
|---|---|---|
| Paul Mescal | Self | 2 |
| Una Healy | Self | 2 |
| Rupert Everett | Self | 2 |
| Pat Shortt | Self | 2 |
| Dara Ó Briain | Self | 2 |
| Jean-Claude Van Damme | Self | 1 |
| Colin Farrell | Self | 1 |
| Saoirse Ronan | Self | 1 |
| Colm Meaney | Self | 1 |
| Jamie Dornan | Self | 1 |
| Aidan Quinn | Self | 1 |
| Andrew Scott | Self | 1 |
| Conan O'Brien | Self | 1 |
| Alastair Campbell | Self | 1 |
| Ricky Tomlinson | Self | 1 |
| James Nesbitt | Self | 1 |
| Matt Lucas | Self | 1 |
| Jason Donovan | Self | 1 |
| Vicky McClure | Self | 1 |
| Eileen Walsh | Self | 1 |
| Sharon Horgan | Self | 1 |
| Tom Allen | Self | 1 |
| James Blunt | Self | 1 |
| Ardal O'Hanlon | Self | 1 |
| Brendan O'Carroll | Self | 1 |
| Liz Bonnin | Self | 1 |
| Piers Morgan | Self | 1 |
| Rick Astley | Self | 1 |
| Emily Maitlis | Self | 1 |
| Rylan Clark | Self | 1 |
| Maura Higgins | Self | 1 |
| Angela Scanlon | Self | 1 |
| Adam Clayton | Self | 1 |
| Tony Christie | Self | 1 |
| Laurence Kinlan | Self | 1 |
| Tara Flynn | Self | 1 |
| Victoria Smurfit | Self | 1 |