David Bradley, Mark Williams Confirmed to Guest Star on "Doctor Who"HP Cast
Harry Potter alums David Bradley (Argus Filch) and Mark Williams (Arthur Weasley) will both guest star during the seventh season of the BBC's hit show, "Doctor Who." News came from the BBC on the first official day of filming for the series. At the moment, it's unknown what role or episodes the actors will appear in or when "Doctor Who" will return to TV screens. We'll report again once the information is announced!