Alex Horne, Sophie Duker, Sophie Ellis-Bextor, Scarlett Moffatt - and their little helpers - compete to design, build and model a LEGO Christmas jumper, and make a magical giant LEGO snow globe
| Name | Type | Role | |
|---|---|---|---|
| Sarah Campbell | Writer | ||
| Nish Kumar | Host | Host | |
| Alex Horne | Guest Star | Contestant | |
| Matthew Ashton | Guest Star | Judge | |
| Sophie Ellis‐Bextor | Guest Star | Contestant | |
| Scarlett Moffatt | Guest Star | Contestant | |
| Sophie Duker | Guest Star | Contestant | |
| Amy Corbett | Guest Star | Judge | |
| Gary Brooks | Director |