The Square is full of excitement as Jay and Honey prepare to run the London Marathon, Whitney and Zack make a worrying discovery, and Billy faces several hurdles as he attempts to make a gesture.
| Name | Type | Role | |
|---|---|---|---|
| Bryan Kirkwood | Writer | ||
| Lola Campbell | Guest Star | Britney Wainwright | |
| Gabby Logan | Guest Star | Herself | |
| Kirsty J. Curtis | Guest Star | Keeley Wainwright | |
| Velile Tshabalala | Guest Star | Stella | |
| Martin Trenaman | Guest Star | PC Green | |
| Howard Saddler | Guest Star | Pastor Gideon Clayton | |
| Nick Helm | Guest Star | Ostrich Man | |
| Mickey Jones | Director |