Meg, a music manager, travels from New York to London to manage a boy band, Five Together, and find them a Christmas number one to bolster their flagging career. She finds a song on the internet posted by an ailing thirteen-year-old girl, Nina, and tries to obtain permission to have the song re-recorded by Five Together, but she discovers she has competition from the songwriter, Nina’s uncle Blake. What follows is a romantic comedy about two worlds colliding – with a young woman at the centre who desperately wants her uncle to find love and for his song to hit the number one spot by Christmas Day.
Unfortunately the movie A Christmas Number One is not yet available on HBO Max.
| Writing | Giles New | Writer |
| Directing | Chris Cottam | Director |
| Writing | Keiron Self | Writer |
| Writing | Robert Chandler | Writer |
| Writing | Robert Chandler | Story |
| Production | Robert Chandler | Producer |
| Production | Camilla Deakin | Producer |
| Production | Debbie Gray | Producer |
| Production | Ruth Fielding | Producer |
| Production | Sam Cornish | Associate Producer |
| Production | Julian Gleek | Executive Producer |
| Editing | Gareth McEwan | Editor |
| Production | Debbie McWilliams | Casting |
| Production | Kelly Duffell | Line Producer |
| Production | Jemima McWilliams | Casting |
| Art | Anna Papa | Production Design |
| Art | Lucy Gahagan | Art Direction |
| Camera | Catherine Derry | Director of Photography |
| Sound | Guy Chambers | Original Music Composer |
| Costume & Make-Up | Olivia Simpson | Costume Design |
| Costume & Make-Up | Karleigh Williams | Makeup Artist |
| Costume & Make-Up | Sue Wyburgh | Makeup Artist |
| Costume & Make-Up | Alison Hanken | Makeup Artist |
| Sound | Ruth Sullivan | Foley Artist |
| Sound | Jason Swanscott | Foley Artist |
