Filmography36 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2025 | Bridget Jones: Mad About the BoyMovie | Tom | 54 |
| 2023 | Castlevania: NocturneSeries | Alucard (voice) | 52 |
| 2022 | Slow HorsesSeries | Claude Whelan | 51 |
| 2020 | Star Trek: PicardSeries | Maurice Picard | 49 |
| 2020 | Break EvenMovie | Zalman | 49 |
| 2019 | Blood & TreasureSeries | Simon Hardwick | 48 |
| 2017 | CastlevaniaSeries | Adrian Tepes / Alucard (voice) | 46 |
| 2017 | House by the LakeMovie | Scott | 46 |
| 2016 | MacGyverSeries | Merchant | 45 |
| 2016 | The HollowMovie | Vaughn Killinger | 45 |
| 2016 | Blood MoonMovie | — | 45 |
| 2015 | 12 MonkeysSeries | Athan Cole | 44 |
| 2014 | The MusketeersSeries | Émile Bonnaire | 43 |
| 2013 | Rick and MortySeries | Pat Gueterman / Courier Flaps (voice) | 42 |
| 2013 | AustenlandMovie | Colonel Andrews | 42 |
| 2012 | Key & PeeleSeries | Shakespeare | 41 |
| 2012 | ArrowSeries | The Dodger | 41 |
| 2011 | PortlandiaSeries | James Callis | 40 |
| 2011 | 17th PrecinctMovie | John Bosson | 40 |
| 2009 | FlashForwardSeries | Gabriel McDow | 38 |
| 2009 | Merlin and the Book of BeastsMovie | Merlin | 38 |
| 2008 | MerlinSeries | Julius Borden | 37 |
| 2006 | EurekaSeries | Dr. Trevor Grant | 35 |
| 2006 | One Night with the KingMovie | Haman, the Agagite | 35 |
| 2005 | Numb3rsSeries | Mason Duryea | 34 |
| 2004 | Battlestar GalacticaSeries | Gaius Baltar | 33 |
| 2003 | Battlestar GalacticaSeries | Gaius Baltar | 32 |
| 2003 | Helen of TroySeries | King Menelaus of Sparta | 32 |
| 2001 | Victoria & AlbertMovie | Ernest | 30 |
| 2000 | CSI: Crime Scene InvestigationSeries | John Merchiston | 29 |
| 2000 | Arabian NightsSeries | Prince Ahmed | 29 |
| 1999 | Relic HunterSeries | Raoul | 28 |
| 1997 | Midsomer MurdersSeries | Toby DeQuetteville | 26 |
| 1997 | A Dance to the Music of TimeSeries | Gwinnett | 26 |
| 1991 | Murder Most HorridSeries | Mark | 20 |
| 1987 | The Ruth Rendell MysteriesSeries | Guy Curran | 16 |