| My Life as a Popat | ITV | comedy television series | 2 | 14 |
| My Life as an Animal | BBC Three | reality television | 1 | 4 |
| My Life in Film | BBC Three | comedy television series | 1 | 6 |
| My Mad Fat Diary | E4 | comedy drama | 3 | 16 |
| My Mother and Other Strangers | — | — | — | 5 |
| My Mum Tracy Beaker | — | children's television series | — | — |
| My Mum, Your Dad | — | — | — | — |
| My Name Is Harry Worth | ITV | sitcom | 1 | 8 |
| My New Best Friend | Channel 4 | reality television | 1 | 6 |
| My Pal Bob | BBC One | — | 2 | 10 |
| My Parents Are Aliens | ITV | sitcom, children's television series | 8 | 105 |
| My Pet and Me | — | — | — | — |
| My Phone Genie | ITV | fantasy television program | — | 26 |
| My Shocking Story | — | documentary television program | — | — |
| My Sister and I | — | sitcom | — | — |
| My Son Reuben | ITV | sitcom | 1 | 6 |
| My Son, My Son | — | — | — | — |
| My Spy Family | Boomerang, Cartoon Network, Adult Swim | action television series, comedy television series, family television series, teen sitcom, sitcom | 3 | 46 |
| My Transsexual Summer | Channel 4 | documentary television program, reality television series, LGBT-related television series | 1 | 4 |
| My Uncle Silas | — | — | — | — |
| My Wife and I | — | — | — | — |
| My Wife Next Door | BBC One | sitcom | 1 | 13 |
| My Wonderful Life | — | — | — | — |
| Mysteries Of The Deep | Discovery Channel | — | 1 | 10 |
| Mystery and Imagination | ITV | anthology series, horror television series | 5 | 24 |
| Mystery Files | — | — | — | — |
| Mystery Manhunt | — | — | — | — |
| Mystic | — | — | — | — |
| Mystic Challenge | — | game show | 1 | — |
| Myths & Monsters | — | — | — | — |
| Métal Hurlant Chronicles | France 4, Sony Pictures Television | science fiction television series | 2 | 12 |
| Nadiya Bakes | — | cooking show | — | — |
| Nadiya's Asian Odyssey | — | — | — | — |
| Nadiya's British Food Adventure | BBC Two | — | 1 | 7 |
| Nadiya's Time to Eat | — | cooking show | — | — |
| Nadiya’s Family Favourites | BBC Two | cooking show | 1 | 8 |
| Naked Attraction | Channel 4 | dating game show, game show | 6 | 35 |
| Naked Elvis | — | game show | — | — |
| Naked Jungle | Channel 5 | game show | 1 | 1 |
| Naked Video | BBC Scotland | comedy television series | 5 | 30 |
| Nancy Astor | — | — | — | — |
| Nanny | BBC One | — | 3 | 30 |
| Narco Wars | — | — | — | — |
| NASA's Story | — | — | — | — |
| Nathan Barley | Channel 4 | sitcom | 1 | 6 |
| National Treasure | Channel 4 | — | 1 | 4 |
| Nationwide | BBC One | — | — | — |
| Natural History of an Alien | BBC Two | — | — | 1 |
| Natural World | BBC Two | nature documentary, documentary film | 39 | 493 |
| Nature's Epic Journeys | — | — | — | 3 |
| Nature's Great Events | BBC One | nature documentary, documentary film | — | 6 |
| Nature's Microworlds | BBC Four | documentary film | 2 | 13 |
| Nature's Weirdest Events | BBC Two | — | 5 | 15 |
| Nautilus | AMC | adventure television series, fantasy television series, drama television series | 1 | 10 |
| Nazi Hunters | — | documentary television program | — | — |
| Nazi Megastructures | British Broadcasting Corporation, PBS | documentary film | 3 | 12 |
| NB | — | — | — | — |
| NCS: Manhunt | BBC One | police procedural | 2 | 8 |
| Nearest and Dearest | ITV | sitcom | 7 | 46 |
| Nearly Famous | E4 | — | 1 | 6 |