Guest Stars Sam Bottomley as Ralph Roberts Oscar Kennedy as Young Liam Aqib Khan as Adnan "Addy" Masood Shaun Thomas as Tom "Craggy" Cragg Lily Frazer as Jess James Dryden as Mr Dreyfus Katy Wix as Miss Monroe Con O'Neill as Mr Stones Rob Carter as Hipster Boss Emily Lloyd-Saini as Dr Cheryl Watkin-Wynn Conor Lowson as Hard Lad