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 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 Rakhee Thakrar as Miss Sands Chris Jenks as Steve Morley Chaneil Kular as Anwar Sami Outalbali as Rahim Simone Ashley as Olivia Hannah Waddingham as Sofia Marchetti Anne-Marie Duff as Erin Wiley Sharon Duncan-Brewster as Roz Marchetti Doreene Blackstock as Beatrice Effiong George Somner as Joe Jojo Macari as Kyle T'Nia Miller as Maxine Tarrington Toby Williams as Tim Roman Hayeck-Green as Owen Ashna Rabheru as Gwen Andrew Joshi as A&E Doctor Hope Jones as Martha Tsion Habte as Fiona Samuel Jordan as Simon