Stuart Sinton
From Tardis Wiki, the free Doctor Who reference
Stuart Sinton was the son of Geoff and Linda Sinton and the brother of Richard Sinton.
One day the Fourth Doctor and Harry Sullivan came to his house to use the television. While there they made contact with an alien war marshal called Kathnor, who was holding the Doctor's other friend hostage. When the Doctor and Harry left, Stuart and Richard played aliens. (PROSE: The Last Broadcast)