Britain's Prince Charles has been offered a role on cult sci-fi series Doctor Who after showing off his impression of a Dalek's voice during a royal set visit in Wales. The heir to the throne and his wife, Camilla, Duchess of Cornwall, travelled to the BBC's Roath Lock studios on Wednesday (03Jul13) as part of their summer tour and met with members of the Doctor Who cast and crew, including writer Steven Moffat and current Time Lord, Matt Smith, in celebration of the show's 50th anniversary. During the visit, the Prince even tried using a voice modulator to mimick the sound of the Daleks, uttering the TV cyborgs' famous "exterminate" phrase and jokingly telling the crowd, "You are now our prisoners." His playful efforts impressed Moffat and he has invited the Prince back to the set to be a part of the show for real. He tells the BBC, "I haven't thought about how I could weave a meeting between the Doctor and the royal family, but Prince Charles's attempt at being a Dalek was great. There would be a part in the show for him if he wanted it."