Ian McDiarmid's Unofficial Fansite: News, biography, and pictures.
Ian McDiarmid.com: News and links.
Ian McDiarmid: Large List of Links: Listing of articles, pictures, and essays of actor Ian McDiarmid and the Almeida Theatre.
IMDb: Ian McDiarmid: Filmography and biography.
Star Wars: Ian McDiarmid: Biography.
Yahoo! Movies: Ian McDiarmid: Biography and filmography.