=== Tv ===
{| class="wikitable sortable"
|-
! År !! Titel !! Rolle !! Noter
|-
|1975 || ''[[Get Some In!]]'' || Wally ||
|-
|1976 || ''[[The Sweeney]]'' || Detective Sergeant ||
|-
|1981
1981
|''[[The Man of Destiny]]''
W.H.Auden Monologue
| Napoleon
W.H.Auden
|
|-
|1984 || ''[[Chance in a Million]]'' || Tom Chance ||
|-
|1986 || ''[[Dead Head (tv-serie)|Dead Head]]'' || Hugo Silver ||
|-
|1986 || ''[[David Copperfield (tv-serie fra 1986)|David Copperfield]]'' || Mr Micawber ||
|-
|1987 || ''[[Inspector Morse (tv-serie)|Inspector Morse]]'' || Theodore Kemp || Episode: "The Wolvercote Tongue"
|-
|1990 || ''Old Flames'' || Nathaniel Quass ||
|-
|1993 || ''Femme Fatale'' || Vicar Ronnie ||
|-
|1994 || ''[[Little Napoleons]]'' || Edward Feathers ||
|-
|1996 || ''An Audience With Charles Dickens'' || [[Charles Dickens]] ||
|-
|1995 || ''[[El pasajero clandestino]]'' || Major Owens ||
|-
|1997 ||''[[The Woman in White (tv-serie fra 1997)|The Woman in White]]'' || Count Fosco ||
|-
|1998 ||''[[Trial & Retribution|Trial & Retribution II]]'' || Rupert Halliday ||
|-
| 2000 ||''The Mystery of Charles Dickens''|| Charles Dickens || Tv-film
|-
|2001 || ''[[Don't Eat the Neighbours]]'' || Fox & Bear ||
|-
|2002 || ''[[Nova (amerikansk tv-serie)|NOVA]]: Galileo's Battle for the Heavens'' || [[Galileo]] || Documentary
|-
|2003 || ''[[Angels in America (miniserie)|Angels in America]]'' || Prior Walter ancestor 2 || Miniseries
|-
|2004 || ''[[Shoebox Zoo]]'' || Wolfgang the Wolf<br />Hunter the Horse ||
|-
|2004 || ''[[Agatha Christie's Marple]]'' || Colonel Terence Melchett || Episode: "The Body in the Library"
|-
|2005 || ''[[Rome (tv-serie)|Rome]]'' || Publius Servilius ||
|-
|2005, 2011 || ''[[Doctor Who]]'' || Charles Dickens || Episoder: "[[The Unquiet Dead]]", "[[The Wedding of River Song]]"
|-
|2006 || ''[[Midsomer Murders]]'' || Dr. Richard Wellow || Episode: "Dead Letters"
|-
|2006 || ''Classical Destinations'' || Fortæller<ref>{{cite web |url=http://www.skyarts.co.uk/music/article/simon-callows-classical-destinations-part-1-salzburg |archive-url=https://web.archive.org/web/20110807124045/http://www.skyarts.co.uk/music/article/simon-callows-classical-destinations-part-1-salzburg/ |url-status=dead |archive-date=2011-08-07 |work=Sky Arts |title=Simon Callow's Classical Destinations: Part 1 – Salzburg }}</ref> ||
|-
|2007 || ''[[Roman Mysteries (tv-serie)|Roman Mysteries]]'' || [[Plinius den ældre]] || Episode: "The Secrets of Vesuvius"
|-
|2007 || ''[[The Company (miniserie)|The Company]]'' || Elihu ||
|-
|2007 ||''How Gay Sex Changed the World'' || Sig selv<ref>{{cite web |url=http://www.channel4.com/culture/microsites/0-9/40_years_on/how-gay-sex-changed-the-world.html |title=40 Years On |publisher=Channel 4 |access-date=26. januar 2008 |archive-date=20. april 2009 |archive-url=https://web.archive.org/web/20090420012300/http://www.channel4.com/culture/microsites/0-9/40_years_on/how-gay-sex-changed-the-world.html |url-status=dead }}</ref> ||
|-
|2007 || ''[[Trick or Treat (tv-serie)|Trick or Treat]]'' || Sig selv|| 1 episode
|-
|2008 || ''[[The Mr. Men Show]]'' || Fortæller ||
|-
|2009 || ''[[Lewis (TV series)|Lewis]]'' || Vernon Oxe || Episode: "Counter Culture Blues"
|-
|2009 || ''[[The Sarah Jane Adventures]]'' || Tree Blathereen || Stemme<br />Episode: "The Gift"
|-
|2011 || ''[[This is Jinsy]]'' || Threcker || Episode: "Nameworm"
|-
|2011 ||''[[Popstar to Operastar]]''|| Sig selv||
|-
|2011 ||''[[Jamie's Dream School]]''|| Sig selv||
|-
|2013 || ''[[Agatha Christie's Poirot]]'' || Dr. Heinrich Lutz || Episode: "The Labours of Hercules"
|-
|2014–2016 || ''[[Outlander (tv-serie)|Outlander]]'' ||The Duke of Sandringham || 5 episoder i sæson 1 og 2
|-
|2014 || ''[[Plebs (TV series)|Plebs]]'' ||Victor || Episode: "The Candidate"
|-
|2014 || ''[[The Feeling Nuts Comedy Night]]'' ||Sig selv||
|-
|2015 || ''[[Ant & Dec's Saturday Night Takeaway]]'' || Guest in ''The End of The Show Show'' || Sæson  12, episode 2
|-
|2016 || ''[[Galavant]]'' || Edwin the Fortuneteller || Episode "World's Best Kiss"
|-
|2016 || ''[[The Rebel (2016 TV series)|The Rebel]]'' || Henry Palmer || Hovedrolle
|-
|2016 || ''[[The Life of Rock with Brian Pern]]'' || Bennett St John || Sæson 3, episode 3
|-
|2017 || ''[[Midsomer Murders]]'' || Vernon De Harthog || Episode: "The Curse of the Ninth"
|-
|2018 || ''[[Death in Paradise (TV series)|Death in Paradise]]'' || Larry South || Sæson 7, episode 3
|-
|2018 || ''[[A Christmas Carol]]'' || Narrator/Actor || BBC4
|-
|2018 || ''[[The Dead Room (tv-film)|The Dead Room]]'' || Aubrey Judd || BBC4
|}
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