Follow Adam and Emma on their daily commute from the village of Langton to London, where they meet the same passengers every day. One morning, Adam breaks the unspoken taboo of talking to strangers on a train and invites the entire carriage to hold their own Christmas party together.
Unfortunately the movie This Is Christmas is not yet available on HBO Max.
| Writing | Alastair Galbraith | Writer |
| Directing | Chris Foggin | Director |
| Production | Sandra Shuttleworth | Co-Producer |
| Production | Jonas Zimmermann | Executive Producer |
| Directing | Edward Dorman | Script Supervisor |
| Art | Imogen Lloyd | Set Decoration |
| Production | Laura Grange | Executive Producer |
| Production | Nicola Shindler | Executive Producer |
| Production | Joe Karimi-Nik | Line Producer |
| Production | Compton Ross | Executive Producer |
| Art | Ruthie Falconer | Art Direction |
| Crew | Nick Chopping | Stunt Coordinator |
| Production | Phil Hunt | Executive Producer |
| Costume & Make-Up | Sékou Traoré | Costume Designer |
| Crew | Grace Franzi | Stunts |
| Production | Julia Stuart | Executive Producer |
| Production | Allan Niblo | Producer |
| Camera | David Mackie | Director of Photography |
| Editing | Martina Zamolo | Editor |
| Sound | Christian Henson | Original Music Composer |
