Guest Stars Ncuti Gatwa as Eric Effiong Emma Mackey as Maeve Wiley Connor Swindells as Adam Groff Aimee Lou Wood as Aimee Gibbs Kedar Williams Stirling as Jackson Marchetti Alistair Petrie as Headmaster Michael Groff Samantha Spiro as Maureen Groff Chinenye Ezeudu as Viv Odusanya Tanya Reynolds as Lily Iglehart George Robinson as Isaac Goodwin Patricia Allison as Ola Nyman Jim Howick as Mr. Hendricks Mikael Persbrandt as Jakob Nyman Sami Outalbali as Rahim Simone Ashley as Olivia Anne-Marie Duff as Erin Wiley Lisa Palfrey as Cynthia Joe Wilkinson as Jeffrey Armin Karima as Malek Jack Helsby as Jack George Georgiou as Yousef Mirren Mack as Florence Sindhu Vee as Olivia's Mum Neil Maskell as Police Officer Susan Lynch as Aimee's Mum Gbemisola Ikumelo as Huma