Bella Ramsey Mildred Hubble Actor Clare Higgins Miss Cackle Actor Raquel Cassidy Miss Hardbroom Actor Wendy Craig Miss Bat Actor Tamara Smart Enid Nightshade Actor Jenny Richardson Ethel Hallow Actor Dagny Rollins Felicity Foxglove Actor Shauna Shim Miss Drill Actor Philip Martin Brown Mr Rowan Actor Megan Hughes Maud Spellbody Actor Marcus Wilson Executive Producer Emma Reeves Writer Jill Murphy Writer Maxine Alderton Writer Dirk Campbell Director Kim Moore Producer Lucy Martin Executive Producer