Graham is joined by Stephen Fry, Amanda Seyfried, Michael J Fox, Nina Sosanya and Jamie Oliver, and there's a special appearance by Dolly Parton, who performs I Saw Mommy Kissing Santa Claus.
| Name | Type | Role | |
|---|---|---|---|
| Dolly Parton | Musical Guest | ||
| Stephen Fry | Guest Star | ||
| Nina Sosanya | Guest Star | ||
| Amanda Seyfried | Guest Star | ||
| Jamie Oliver | Guest Star | ||
| Michael J. Fox | Guest Star | ||
| Tom Allen | Guest Star |