| Name | Character | Episodes |
|---|---|---|
| Ed Speleers | Jimmy Penwarden | 12 |
| Hugo Speer | Mark Penwarden | 12 |
| Martine McCutcheon | Susan Penwarden | 12 |
| Jason Donovan | Daniel Marrack | 12 |
| Christian Cooke | Brae Marrack | 12 |
| Johnny Briggs | Fin Morgan | 12 |
| Gwyneth Powell | Ivy Trehearne | 12 |
| Jonathan Readwin | Charlie Morgan | 12 |
| Naomi Ryan | Jackie Hughes | 12 |
| Laura Greenwood | Grace Penwarden | 12 |
| Kevin Hudson | Sarah's Dad | 1 |