Guest Stars Oscar Kennedy as Young Liam Sam Bottomley as Ralph Roberts Aqib Khan as Adnan "Addy" Masood Shaun Thomas as Tom "Craggy" Cragg Rosie Cavaliero as Linda (Liam's Mum) Neil Edmond as Simon (Liam's Dad) James Weaver as Graham (Letting Agent) Cally Lawrence as Landlord Nicole Adeyemi as Camille (Letting Agent)