It's been five years since Nessa went down on one knee, declared her love for Smithy and asked him to marry her. A lot has happened since then... catch up with the Shipmans and the Wests and maybe find out what exactly did happen on that fishing trip. As we journey to Barry and Billericay for the very last time.
| Name | Type | Role | |
|---|---|---|---|
| James Corden | Writer | ||
| Ruth Jones | Writer | ||
| Olwen Rees | Guest Star | Elderly Lady | |
| Jason Gregg | Guest Star | Gary | |
| Maddison Belle Platt | Guest Star | Megan | |
| Kiera Lester | Guest Star | Assistant | |
| Damian Buhagiar | Guest Star | Stripper | |
| Stewart Scudamore | Guest Star | Clayton | |
| Amy Griffiths | Guest Star | Aspen | |
| Martha Tregonning | Guest Star | Caitlin | |
| Bethan Mary-James | Guest Star | Letitia | |
| Lauren Cornelius | Guest Star | Anna | |
| Russell Tovey | Guest Star | Budgie | |
| Sion Ifan | Guest Star | Photographer | |
| Laura Aikman | Guest Star | Sonia | |
| Anna Maxwell Martin | Guest Star | The Celebrant | |
| Pam Ferris | Guest Star | Cath | |
| Robert Wilfort | Guest Star | Jason | |
| Daniel Jeffrey | Guest Star | Simon | |
| Samuel Anderson | Guest Star | Fingers | |
| Emma Ralston | Guest Star | Sarah | |
| Dominic Gaskell | Guest Star | Chinese Alan | |
| Gabriel Mittell | Guest Star | Harri | |
| Andrew Knott | Guest Star | Dirtbox | |
| Rakie Ayola | Guest Star | The Registrar | |
| Christine Gernon | Director |