Alan and his friends finally get the chance to embark on the epic challenge of battling the Post Office in court.
| Name | Type | Role | |
|---|---|---|---|
| Gwyneth Hughes | Writer | ||
| Adam James | Guest Star | Patrick Green | |
| Conor Mullen | Guest Star | David Hamilton | |
| Asif Khan | Guest Star | Mohammad Sabir | |
| Krupa Pattani | Guest Star | Saman Kaur | |
| Susan Brown | Guest Star | Min Howard | |
| Alex Jordan | Guest Star | Business Reporter | |
| Amit Shah | Guest Star | Jasgun Singh | |
| Mark Arends | Guest Star | Richard Roll | |
| Lia Williams | Guest Star | Paula Vennells | |
| Andrew Havill | Guest Star | Stuart Wentworth QC | |
| John Hollingworth | Guest Star | James Hartley | |
| Ifan Huw Dafydd | Guest Star | Noel Thomas | |
| Pip Torrens | Guest Star | Mr Justice Fraser | |
| James Strong | Director |