The actors who portray the bully Draco Malfoy and bullied Ron Weasley in the Harry Potter movies gave the award to Ms. Carnell after she set up a website, Bullying Online, which provided advice for parents of bullying victirms. The resource was built after she took action against North Yorkshire council when her son was bullied at school.
UPDATE: ITV1 London will is scheduled to air the awards tonight. So if you're in the area, check your local listings to catch Rupert & Tom's award presentation.
UPDATE 2: A very brief, 5-second video download of the presentation are available (in both Windows Media and Quicktime format) for those who are curious to see the two actors. Thanks to Michelle for the heads up!