Mildred Hubble
Mildred Hubble is a major character in "The Worst Witch" children's book series by Jill Murphy. She is the protagonist in all the books. She is friends with Maud Spellbody and Enid Nightshade and has a strong rivalry with Ethel Hallow and Drusilla Paddock.
Una Stubbs
She is also known for her role as Miss Bat in the series "The Worst Witch" and has most recently appeared as Sherlock Holmes's landlady Mrs Hudson in the BAFTA award-winning television series "Sherlock".