He reveals his tricks of the trade when Rolf Harris goes behind the scenes at Leavesden Studios near Watford where they are currently filming the sequel, Harry Potter and the Chamber of Secrets. Not only is there a huge cast of 200 children, but a menagerie of furry, feathered and slimy stars. For Rolf it was "fantastic" to be able to look behind the scenes. "The work that goes into training these animals is astonishing," he said. "And it's great to see all that hard work come to fruition.