| Movie | 1997 | Stranger Than Fiction 3: Acting Up | | |
| Movie | 2007 | Dangerous Liaisons | Davies | |
| Movie | 1985 | An Audience with Billy Connolly | Self - Audience Member (uncredited) | |
| Movie | 2013 | Doctor Who Live: The Afterparty | Self | |
| Movie | 2012 | The Destinations of Doctor Who | Self | |
| Movie | 2012 | The Timey-Wimey of Doctor Who | Self | |
| Movie | 1994 | Black Beauty | Squire Gordon | |
| Movie | 2012 | The Women of Doctor Who | | |
| Movie | 2014 | Doctor Who: The Ultimate Time Lord with Peter Davison | Self - Presenter / The Fifth Doctor | |
| Movie | 1998 | Wuthering Heights | Joseph Lockwood | |
| Movie | 2003 | Too Good to Be True | Robert Lewis | |
| Movie | 1998 | Dear Nobody | Mr. Garton | |
| Movie | 1995 | The Devil of Winterborne | Gavin Purcell | |
| Movie | 1981 | The Hitch Hikers Guide to the Galaxy | Dish of the Day | |
| Movie | 1993 | The Airzone Solution | Al Dunbar | |
| Movie | 2021 | End of Term | Leigh | |
| Movie | 1993 | Doctor Who: Dimensions in Time | The 5th Doctor | |
| Movie | 2013 | The Five(ish) Doctors Reboot | Self | |
| Movie | 2023 | Talking Doctor Who | Self / The Doctor (5) (archive footage) | |
| Movie | 1985 | Myth Makers 5: Janet Fielding | | |
| Movie | 1986 | Who's Who | | |
| Movie | 2001 | The Home Whovian | | |
| Movie | 2015 | Longleat '83: The Lost Footage | | |
| Movie | 2013 | Doctor Who at the Proms | Self - Special Guest Appearance | |
| Movie | 2024 | Happy Mills: The Search for Agent Thorny | The Big Boss (Voice) | |
| Movie | 2013 | Doctor Who: The Day of the Doctor | The Doctor (5) (archive footage) | |
| Movie | 2018 | Doctor Who: Jovanka Airlines | Self | |
| Movie | 2023 | Blood Actually: A Murder, They Hope Mystery | David | |
| Movie | 1991 | The PanoptiCon Tapes Vol 1 - The Main Event | | |
| Movie | 1990 | The PanoptiCon Tapes II | | |
| Movie | 1990 | The PanoptiCon Tapes III | | |
| Movie | 1990 | The PanoptiCon Tapes IV | | |
| Movie | 1990 | The PanoptiCon Tapes V | | |
| Movie | 1986 | The PanoptiCon Tapes VI | | |
| Movie | 1994 | The Zero Imperative | Patient One | |
| Movie | 1984 | Doctor Who: Planet of Fire | The Doctor | |
| Movie | 1996 | Ghosts of Winterborne | Gavin Purcell | |
| Movie | 1992 | A Very Polish Practice | Stephen Daker | |
| Movie | 2022 | Peter Davison: Uncut! | Self | |
| Movie | 2020 | The Doctors: The Peter Davison Years | Self (archive footage) | |
| Movie | 2012 | Tales of Television Centre | Self | |
| Movie | 1984 | Doctor Who: The Caves of Androzani | Fifth Doctor | |
| Movie | 2009 | Micro Men | Bank manager | |
| Movie | 1993 | Harnessing Peacocks | Jim Huxtable | |
| Movie | 2015 | Gypsy | Herbie | |
| Movie | 1992 | Doctor Who: Daleks - The Early Years | Self - Host | |
| Movie | 1994 | Mole's Christmas | Mouse | |
| Movie | 2005 | Doctor Who: A New Dimension | Self | |
| Movie | 2007 | Doctor Who: Time Crash | The Doctor (5) | |
| Movie | 1998 | The Stalker's Apprentice | D.I. Maurice Burt | |
| Movie | 1984 | Doctor Who: Resurrection of the Daleks | The Doctor | |
| Movie | 1982 | Doctor Who: Castrovalva | The Doctor | |
| Movie | 1982 | Doctor Who: Four to Doomsday | The Doctor | |
| Movie | 1982 | Doctor Who: Kinda | The Doctor | |
| Movie | 1982 | Doctor Who: The Visitation | The Doctor | |
| Movie | 1982 | Doctor Who: Black Orchid | The Doctor | |
| Movie | 1982 | Doctor Who: Time-Flight | The Doctor | |
| Movie | 1983 | Doctor Who: Arc of Infinity | The Doctor | |
| Movie | 1983 | Doctor Who: Snakedance | The Doctor | |
| Movie | 1983 | Doctor Who: Mawdryn Undead | The Doctor | |
| Movie | 1983 | Doctor Who: Terminus | The Doctor | |
| Movie | 1983 | Doctor Who: Enlightenment | The Doctor | |
| Movie | 1983 | Doctor Who: The King's Demons | The Doctor | |
| Movie | 1984 | Doctor Who: Warriors of the Deep | The Doctor | |
| Movie | 1984 | Doctor Who: The Awakening | The Doctor | |
| Movie | 1984 | Doctor Who: Frontios | The Doctor | |
| Movie | 1999 | Parting Shots | John | |
| Movie | 1982 | Doctor Who: Earthshock | The Doctor | |
| Movie | 1981 | Doctor Who: Logopolis | The Doctor | |
| Movie | 1994 | Stranger than Fiction | | |
| Movie | 1995 | The Doctors: 30 Years of Time Travel and Beyond | | |
| Movie | 2018 | Patrick | Alan Francis | |
| Movie | 2011 | Doctor Who: Tales Lost in Time | | |
| Movie | 2018 | You, Me and Him | Teacher | |
| Movie | 1983 | Doctor Who: The Five Doctors | The Doctor (5) | |
| Movie | 1995 | The Adventures of Mole | Mole | |
| Movie | 2021 | Dream Horse | Lord Avery | |
| Movie | 2018 | Peter Davison in Conversation | Self | |
| Movie | 1999 | Adventures in Space and Time | Himself | |
| Movie | 2008 | Celebration: Doctor Who in 1983 | | |
| Movie | 2015 | Doctor Who: The Television Centre of the Universe | Self | |
| Movie | 2003 | The Story of Doctor Who | | |
| Movie | 2014 | Doctor Who: The Ultimate Companion | Self / The Doctor (archive footage) | |
| Movie | 2001 | Longleat '83: The Greatest Show in the Galaxy | Himself (archive footage) | |
| Movie | 2019 | Showman: The Life of John Nathan-Turner | Himself | |
| Movie | 2013 | Doctor Who Live: The Next Doctor | Self | |
| Movie | 2018 | The Muppets Take The O2 | Self | |
| Movie | 2008 | Trials and Tribulations | (archive footage) | |
| Movie | 1994 | A Man You Don't Meet Every Day | Robert | |
| Movie | 1999 | The Kidnappers | Himself | |
| Movie | 1996 | The Adventures of Toad | Mole | |
| Movie | 2018 | Say My Name | Detective Rich Herbig | |
| Movie | 2003 | Tricia | Dangerous Davies | |
| Movie | 2004 | Christine | Dangerous Davies | |
| Movie | 2004 | The Long Bank Holiday | Dangerous Davies | |
| Movie | 2024 | Kiss Me, Kate | The General | |
| Movie | 2024 | Doctor Who at the Proms | The Doctor (5) (archive footage) | |
| Movie | 2008 | Doctor Who: The Next Doctor | The Doctor (5) (archive footage) | |
| Movie | 2015 | Doctor Who: The Husbands of River Song | The Doctor (5) (picture) (uncredited) | |
| Movie | 2007 | A New Body at Last | | |
| Movie | 2011 | Come in Number Five | | |
| Movie | 2008 | The Ties That Bind Us | The Fifth Doctor (archive footage) | |
| Movie | 2007 | The Crowded TARDIS | | |
| Movie | 2018 | Earthshocked | | |
| Movie | 2010 | Chain Reaction | | |
| Movie | 2011 | Driven to Distractation | | |
| Movie | 2013 | Doctor Who: Tales from the TARDIS | Self | |
| Movie | 2025 | Doctor Who: Wish World & The Reality War | The Doctor (archive footage) (uncredited) | |
| Movie | 2017 | Classic Doctor Who Comic-Con Panel | Self | |
| Movie | 2003 | The Last Detective | DC Davies | |
| Movie | 2004 | Benefit to Mankind | DC Davies | |
| Movie | 2004 | Dangerous and the Lonely Hearts | DC Davies | |
| Movie | 2005 | Friends Reunited | DC Davies | |
| Movie | 2005 | Towpaths of Glory | DC Davies | |
| Movie | 2005 | Three Steps to Hendon | DC Davies | |
| Movie | 2005 | Willesden Confidential | DC Davies | |
| Movie | 2007 | Once Upon a Time on the Westway | DC Davies | |
| Movie | 2007 | A Funny Thing Happened on the Way to Willesden | DC Davies | |
| Movie | 2007 | The Man from Montevideo | DC Davies | |
| Movie | 2007 | The Dead Peasants Society | DC Davies | |
| Movie | 2008 | Now, Get Out of That | | |
| TV Show | 1980 | Magnum, P.I. | Ian MacKerras | 2 |
| TV Show | 1999 | Hope and Glory | Neil Bruce | 1 |
| TV Show | 2005 | Doctor Who Confidential | | 9 |
| TV Show | 2007 | Fear, Stress & Anger | Martin Chadwick | 6 |
| TV Show | 1981 | The Hitchhiker's Guide to the Galaxy | Dish of the Day | 1 |
| TV Show | 1994 | Ain't Misbehavin' | Clive Quigley | 12 |
| TV Show | 2003 | Hardware | Peter Davison | 1 |
| TV Show | 1997 | Jonathan Creek | Stephen Claithorne | 1 |
| TV Show | 1986 | A Very Peculiar Practice | Dr. Stephen Daker | 14 |
| TV Show | 2005 | Distant Shores | Bill Shore | 12 |
| TV Show | 1979 | Tales of the Unexpected | Jeremy Tyler | 1 |
| TV Show | 2001 | Richard & Judy | Self | 1 |
| TV Show | 2009 | Law & Order: UK | Henry Sharpe | 27 |
| TV Show | 1978 | All Creatures Great and Small | Tristan Farnon | 68 |
| TV Show | 2000 | At Home with the Braithwaites | David Braithwaite | 26 |
| TV Show | 2013 | Pat & Cabbage | Michael | 6 |
| TV Show | 2006 | The Complete Guide to Parenting | George Huntley | 5 |
| TV Show | 1973 | Warship | | 1 |
| TV Show | 1977 | Love for Lydia | Tom Holland | 13 |
| TV Show | 1980 | Holding the Fort | Russell Milburn | 20 |
| TV Show | 1989 | Campion | Albert Campion | 16 |
| TV Show | 2003 | The Last Detective | Detective Constable 'Dangerous' Davies | 17 |
| TV Show | 2023 | The Gold | Assistant Commissioner Gordon Stewart | 11 |
| TV Show | 1991 | Fiddlers Three | Ralph West | 14 |
| TV Show | 1999 | It's Only TV But I Like It | Self | 1 |
| TV Show | 1980 | Sink or Swim | Brian Webber | 19 |
| TV Show | 2009 | Unforgiven | John Ingram | 3 |
| TV Show | 2023 | The Big Steam Adventure | Himself | 4 |
| TV Show | 2011 | Vera | Matthew Wells | 1 |
| TV Show | 2017 | Harry Hill's Alien Fun Capsule | Self | 1 |
| TV Show | 1985 | Anna of the Five Towns | Henry Mynors | 4 |
| TV Show | 2021 | The Larkins | Vicar | 13 |
| TV Show | 2013 | Toast of London | Peter Davison | 3 |
| TV Show | 2019 | Good Omens | Job | 1 |
| TV Show | 1978 | An Audience with... | Self | 1 |
| TV Show | 1997 | Midsomer Murders | Nicky Frazer | 1 |
| TV Show | 2009 | The Queen | | 5 |
| TV Show | 2020 | Between the Covers | Self | 1 |
| TV Show | 1985 | Miss Marple: A Pocketful of Rye | Lance Fortescue | 2 |
| TV Show | 2011 | Death in Paradise | Arnold Finch | 1 |
| TV Show | 1985 | Doctor Who's Who's Who | Doctor Who | 1 |
| TV Show | 1987 | Going Live! | Self | 1 |
| TV Show | 2018 | Vintage Roads | Himself - Presenter | 3 |
| TV Show | 2023 | Beyond Paradise | Richard Baxter | 3 |
| TV Show | 2019 | The Name of the Rose | Old Adso / Narrator (voice) | 8 |
| TV Show | 2007 | Lewis | Peter Faulkner | 2 |
| TV Show | 1963 | Doctor Who | The Doctor | 73 |
| TV Show | 2019 | Gentleman Jack | William Priestley | 8 |
| TV Show | 2013 | Doctor Who: The Doctors Revisited | Self | 11 |
| TV Show | 2000 | The Nearly Complete and Utter History of Everything | | 2 |
| TV Show | 2017 | Liar | Denis Walters | 2 |
| TV Show | 2023 | Tales of the Tardis | The Doctor | 1 |
| TV Show | 1998 | The Mrs Bradley Mysteries | Inspector Christmas | 3 |
| TV Show | 1999 | Loose Women | Self | 1 |
| TV Show | 2020 | Life | Henry Reynolds | 6 |
| TV Show | 2004 | New Tricks | Charles Allenforth | 1 |
| TV Show | 2004 | Agatha Christie's Marple | Hubert Curtain | 1 |
