Joining Alan are Sir Brian May, Phil Tufnell, and Denise Black to provide the chat while horticulturalist Camilla Bassett-Smith shows how to heat up greenhouses.
| Name | Type | Role | |
|---|---|---|---|
| Phil Tufnell | Guest Star | ||
| Denise Black | Guest Star | ||
| Camilla Bassett-Smith | Guest Star | ||
| Brian May | Guest Star |