Guest Stars Jennifer Wigmore as Miss Grayling Beth Bradfield as Jean Dunlop Imogen Lamb as Mary-Lou Linnett Natasha Raphael as Irene Edwards Jude Harper-Wrobel as Ron Gilson Twinkle Jaiswal as Katherine Saskia Kemkers as Emily Lake Imali Perera as Miss Potts Hannah Saxby as Pamela Christine Horne as Margaret Lake Jaimie Kollmer as Penelope Catherine Bailey as Miss Gale Palmer Newson as Joan Lacey
