When the Slitheen's latest scheme is halted, the Blathereen arrive - but can they be trusted?
| Name | Type | Role | |
|---|---|---|---|
| Rupert Laight | Writer | ||
| Sarah Paul | Guest Star | Miss Jerome | |
| Ruari Mears | Guest Star | Tree Blathereen | |
| Calvin Dean | Guest Star | Chris | |
| Miriam Margolyes | Guest Star | Voice of Leef Blathereen | |
| Jimmy Vee | Guest Star | Chris Slitheen | |
| Simon Callow | Guest Star | Voice of Tree Blathereen | |
| Edward Judge | Guest Star | Dave | |
| Paul Kasey | Guest Star | Leef Blathereen | |
| Alice Troughton | Director |