Cinematografie
| 2021 | It's a Sin · as Ritchie Tozer |
| 2015 | Funny Bunny · as Titty |
| 2014 | The Riot Club · as Toby Maitland |
| 2014 | God Help the Girl · as James |
| 2014 | Penny Dreadful · as Fenton |
| 2013 | Le Week-End · as MichaelOp Plex |
| 2013 | |
| 2012 | Great Expectations · as Herbert Pocket |
| 2012 | Cheerful Weather for the Wedding · as Tom |
| 2011 | The Dish & the Spoon · as BoyOp Plex |
| 2010 | Gulliver's Travels · as Prince August |
| 2009 | Dust · as Elias |
| 2009 | Bright Star · as Tom Keats |
| 2009 | |
| 2009 | Enter the Void · as Victor |
| 2009 | Tormented · as Jason Banks |
| 2008 | Summerhill · as Ned |
| 2007 | Skins · as Jakob |
| 2006 |
| 2024 | Imagine… Pet Shop Boys: Then and Now · as Self - Interviewee |
| 2023 | An Audience with Kylie · as Self |
| 2023 | George Michael: Outed · as Self |
| 2021 | An Audience with Adele · as Self |
| 2020 | The Masked Singer (UK) · as Self - Guest Panellist |
| 2019 | The Kelly Clarkson Show · as Self - Guest |
| 2019 | RuPaul's Drag Race UK · as Self - Guest Judge |
| 2019 | Celebrity Gogglebox · as Self |
| 2018 | 27: Gone Too Soon · as SelfOp Plex |
| 2017 | Saturday Mash-Up · as Self |
| 2017 | Olly Alexander: Growing Up Gay · as Himself |
| 2017 | 50 Years Legal · as Self |
| 2017 | Love Island: Aftersun · as Self |
| 2015 | Michael McIntyre's Big Show · as Self - Performer |
| 2012 | Sunday Brunch · as Self - Guest |
| 2012 | The Voice UK · as Self - Mentor |
| 2011 | The Jonathan Ross Show · as Self |
| 2010 | The Great British Baking Show · as Self - Contestant |
| 2009 | Alan Carr: Chatty Man · as Self - Guest |
| 2009 | Skavlan · as Self - Guest |
| 2007 | The Graham Norton Show · as Self - Musical Guest |
| 2006 | The ONE Show · as Self |
| 2006 | CBeebies Bedtime Stories · as Self - Storyteller |
| 2005 | Entertainment Tonight Canada · as Self |
| 2004 | Strictly Come Dancing · as Self |
| 2003 | imagine... · as Self |
| 2002 | Ant & Dec's Saturday Night Takeaway · as Self |
| 2001 | Lorraine · as Self - Guest |
| 1996 | TFI Friday · as Self |
| 1994 | MTV Europe Music Awards · as Self - Presenter |
| 1992 | ARD-Morgenmagazin · as Self |
| 1985 | EastEnders · as Olly Alexander |
| 1964 | Top of the Pops · as Self - Performer |
| 1958 | Blue Peter · as Self |
| 1956 | Eurovision Song Contest · as Self - Contestant |
| 2011 | The Dish & the Spoon · as Original Music ComposerOp Plex |
| 2023 | Bonus Track · as SongsOp Plex |
| 2016 | Bridget Jones's Baby · as Songs |
| 2015 | Funny Bunny · as Co-Writer |
| 2011 | The Dish & the Spoon · as Additional MaterialOp Plex |