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 Mimi Keene as Ruby Matthews 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 Rakhee Thakrar as Miss Sands Chris Jenks as Steve Morley Chaneil Kular as Anwar Sami Outalbali as Rahim Hannah Waddingham as Sofia Marchetti Simone Ashley as Olivia Anne-Marie Duff as Erin Wiley Sharon Duncan-Brewster as Roz Marchetti Doreene Blackstock as Beatrice Effiong George Somner as Joe Conor Clarke McGrath as Courgette Connor Lisa Palfrey as Cynthia Lino Facioli as Dex Thompson Jack Helsby as Jack Tom Atkinson as Nick Sanchia McCormack as Quiz Moderator Liz Jadav as Doctor