Behind the scenes at Matilda the Musical (2013) | Dressing Room Confessions

For more behind-the-scenes videos from London theatres, go to http://www.timeout.com/behindthescenes

To say that the stage adaptation of Roald Dahl's Matilda has been well received is something of an understatement -- after making its debut in 2011, the musical scooped a record-breaking seven gongs at last year's Olivier Awards. This has much to do with the Dennis Kelly and Tim Michin's script and score, as well as some innovative stage design and props. But, as with Dahl's original novel, 'Matilda the Musical' has proved a hit thanks to its wonderful characters -- from child genius Matilda herself, to the villainous Miss Trunchball. Time Out meets David Leonard, the man -- yes, man -- behind the deliciously demonic Trunchball. He tells us a little bit about what it's like to be part of one of the West End's most celebrated shows, as well as lets us into his dressing room to witness his transformation from mild-mannered thespian into heinous headmistress.

Camerawork and editing by Vin Shahrestani
Planning and direction by David Clack