Ailsa Berk is a British actress who specializes in prosthetic and costumed roles. She performed both the adolescent and adult versions of Grovelhog in The StoryTeller episode "Hans My Hedgehog", and served as performance coordinator for the Yahoos in Gulliver's Travels.
Other credits include a tiger and panda in Fierce Creatures (starring John Cleese), Amanaman in Return of the Jedi, a wheeler in Return to Oz, and serving as choreographer for various monsters in the 2005 version of Doctor Who.