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 George Robinson as Isaac Goodwin Dua Saleh as Cal Bowman Hannah Waddingham as Sofia Marchetti Sharon Duncan-Brewster as Roz Marchetti Doreene Blackstock as Beatrice Effiong George Somner as Joe Conor Clarke McGrath as Courgette Connor Thaddea Graham as Sarah "O" Owen Alexandra James as Aisha Reda Elazouar as Beau Lisa McGrillis as Joanna Hannah Gadsby as Celia Daniel Ings as Dan Anna Francolini as Gloria Masters Anthony Lexa as Abbi Montgomery Felix Mufti as Roman Bella Maclean as Jem Dan Levy as Thomas Molloy Marie Reuther as Ellen Rasmussen Imani Yahshua as Tyrone Shak Benjamin as Adedeyo Gbolahan Obisesan as Pastor Samuel Jodie Turner-Smith as God Andi Osho as Nicky Bowman James Jip as Chris Eshaan Akbar as Principal Lakhani Hannah Boyce as Harriet Anders J.B. Moore as Buster Frankie Williams as Tilly Emmanuel Akwafo as Fragrance Spritzer