Star Wars actor Mark Hamill has collaborated with Open Bionics, a Bristol based company which makes bionic limbs, and features in a special video message to encourage children with limb differences to be themselves.

Hamill, who plays Luke Skywalker in the sci-fi franchise, says in the video 'Remember, Luke lost his hand to Vader, but that didn’t stop him from defeating the Empire. So have courage, be determined, and always remember that your limb difference is your very own superpower. And may The Force be with you all'.