| Episode: The Figures Man|-| rowspan="2"|1979| The Mallens| Weir| Episode: 1.1 Episode: 1.2|-| Secret Army| Hanslick | |-| 1980| Love in a Cold Climate| Tony Kroesig| Thames Television Miniseries|-| rowspan="2"|1981| Crown Court| Timothy Preston-Berry| Episode: Hen Party|-| Bergerac| Bill | |-| 1984, 1988| The Comic Strip Presents...| Ricki Recording Studio Engineer| |-| rowspan="2"|1985| C.A.T.S. Eyes| James Sinden| |-| Howards' Way| Phil Norton| |-| rowspan="2"|1987| Boon| Richard Rathbone| Episode: Day of the Yoke|-| Pulaski| Dudley Fielding| Episode: The Price of Fame|-| 1988| Rockliffe's Babies| Chris Patterson| Episode: A Trip to the Zoo|-| 1991| Woof!| Bentley | Episode: 3.7 Episode: 3.8|-| rowspan="2"|1993| The Detectives| Simon| |-| '| Allan Rothwood| |-| 1994| Royce| Pitlock | Showtime TV-Movie|-| rowspan="3"|1995| VR.5| Oliver Sampson| Episodes: 5-13|-| Ghostbusters of East Finchley| Terry | Episode: 1.5|-| NYPD Blue| Nigel Gibson| |-| 1996| Roger Roger| Jimmy Price| |-| 1997| Jonathan Creek| Adam Klaus| |-| 1997–2003| Buffy the Vampire Slayer| Rupert Giles| Saturn Award (nominated)|-| 1999| Two Guys, a Girl and a Pizza Place| Dr. Staretski| |-| 2000| Best Actress| Colin Truemans| E! TV-Movie|-| 2001| Silent Witness| Henry Hutton| Episode: Two Below Zero|-| rowspan="2"|2002| Spooks| Peter Salter| |-| Fillmore!| Professor Thind| |-| 2002–2003| Manchild| James| |-| rowspan="3"|2003| My Family| Richard Harper| |-| And Starring Pancho Villa as Himself| William Benton| HBO TV-Movie|-| Reversals| Mr. Andrew Barton| ITV TV-Movie|-| 2003–2006| Little Britain| Michael Stevens| |-| rowspan="3"|2004| True Horror with Anthony Head| Presenter| Episodes: 1-5|-| New Tricks| Sir Tim| |-| Monarch of the Glen| Chester Grant| Episodes: 6.7-6.10|-| rowspan="2"|2005| '| Stewart Masters| Episode: 2.2|-| Rose and Maloney| Dr. David Terry| Episode: 2.2|-| rowspan="4"|2006| Hotel Babylon| Mr. Machin| |-| Doctor Who| Mr. Finch | |-| Children's Party at the Palace| Captain Hook | BBC TV-Special|-| Him and Us| Max Flash| Unsold TV-Pilot|-| rowspan="6"|2007| '| Various| BBC TV-Special|-| Persuasion| Sir Walter Elliot| ITV TV-Movie|-| Totally Doctor Who| Baltazar | Voice Role in The Infinite Quest|-| Sensitive Skin| Tom Paine| Episode: The Signals Episode: Here I Am|-| Free Agents| Stephen | Channel 4 TV-Movie|-| Sold| Mr. Colubrine| |-| 2007–2008| Doctor Who Confidential| Narrator| |-| rowspan="2"|2008| Merlin| Uther| |-| The Invisibles| Maurice Riley| BBC One series|-|}