Mark and Emma, longtime unmarried partners and parents of seven-year-old son Sam, decide to wed despite the growing rockiness in their relationship. Mark's brother Rich is part of the problem: Rich and Emma secretly long for one another, unbeknownst to Mark and to Rich's girlfriend Louise.
| Name | Type | Role | |
|---|---|---|---|
| Stewart Harcourt | Writer | ||
| Andrew Woodall | Guest Star | ||
| Lucas Hare | Guest Star | ||
| Claire Lubert | Guest Star | ||
| Roxanne Ricketts | Guest Star | ||
| Amy Bayless | Guest Star | ||
| Aoife Thompson | Guest Star | ||
| Isla Fisher | Guest Star | ||
| Tom Shankland | Director |