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 Sharon Duncan-Brewster as Roz Marchetti Doreene Blackstock as Beatrice Effiong Thaddea Graham as Sarah "O" Owen Reda Elazouar as Beau Indra Ové as Anna Alexandra James as Aisha Lisa McGrillis as Joanna Hannah Gadsby as Celia Daniel Ings as Dan Anna Francolini as Gloria Masters Felix Mufti as Roman Anthony Lexa as Abbi Montgomery Bella Maclean as Jem Edward Bluemel as Sean Wiley Gbolahan Obisesan as Pastor Samuel Jodie Turner-Smith as God Juliette Alexandra as PK Aisha Jawando as Nurse Tallulah Bond as Student Emma Bown as Dr. Hudson