Guest Stars Natasha Raphael as Irene Edwards Beth Bradfield as Jean Dunlop Imogen Lamb as Mary-Lou Linnett Ashley McGuire as Matron Genevieve Beaudet as Mam'zelle Rougier Jude Harper-Wrobel as Ron Gilson Twinkle Jaiswal as Katherine Saskia Kemkers as Emily Lake Imali Perera as Miss Potts
