In addition, Miriam Margolyes ("Cats & Dogs") has signed on as green-fingered Professor Sprout and Mark Williams ("Shakespeare in Love") as Ron's father, Mr. Weasley. Other additions include "Bridget Jones's Diary" pair Shirley Henderson as Moaning Myrtle and Gemma Jones as Madam Pomfrey, and feature rookie Sally Mortemore as librarian Madam Pince.
As previously announced, Kenneth Branagh will play Defense Against the Dark Arts Professor Gilderoy Lockhart, an egotistical new arrival at Hogwarts School of Witchcraft and Wizardry.
Director Chris Columbus and producer David Heyman reprise their filmmaking roles on "Chamber of Secrets".
