| Kilroy | talk show | — | — |
| King Cinder | — | 1 | 6 |
| King of the River | — | 1 | 17 |
| King Rollo | — | 1 | 13 |
| Kingdom | nature documentary | — | — |
| Kiss of Death | — | 1 | 1 |
| L.A. 7 | — | 1 | 13 |
| Land Girls | drama film | 3 | 15 |
| Lark Rise to Candleford | drama television series | 4 | 40 |
| Last Choir Standing | reality television | 1 | 16 |
| Last of the Summer Wine | sitcom | 31 | 295 |
| Last Tango in Halifax | comedy drama, LGBT-related television series | 5 | 24 |
| Late Kick Off | — | 5 | 64 |
| Lee Mack's All Star Cast | comedy television series | 1 | 6 |
| Let It Shine | reality television | 1 | 3 |
| Let Them Eat Cake | sitcom | 1 | 6 |
| Life | nature documentary | 1 | 10 |
| Life | — | 1 | 6 |
| Life in Colour with David Attenborough | — | 1 | 3 |
| Life in the Air | — | — | 3 |
| Life in the Freezer | nature documentary | — | 6 |
| Life of Riley | sitcom | 3 | 20 |
| Life on Mars | police television drama, science fiction television series, drama television series, comedy drama | 2 | 16 |
| Life Story | nature documentary | 1 | 6 |
| Life Without George | sitcom | 3 | 20 |
| Lifesense | nature documentary | 1 | 6 |
| Linda Green | drama fiction | 2 | 20 |
| Little Dorrit | drama television series | 1 | 14 |
| Little Mix: The Search | reality television | 1 | 4 |
| Little Women | drama television series, coming-of-age television program, romance television series | 1 | 3 |
| Live & Kicking | — | 8 | 264 |
| Lizzie Dripping | — | — | 9 |
| Look and Read | children's television series | — | — |
| Lord of the Flies | adventure fiction, drama fiction, thriller | — | 4 |
| Lost Boys & Fairies | drama film, LGBT-related television series | — | 3 |
| Lost Land of the Jaguar | nature documentary | — | 3 |
| Lost Land of the Tiger | nature documentary | — | 3 |
| Love Hurts | drama television series, comedy television series | 3 | 30 |
| Love Soup | comedy drama, romance television series | 2 | 18 |
| Love, Lies and Records | LGBT-related television series | 1 | — |
| Lovejoy | drama television series, comedy drama, mystery television series | 6 | 71 |
| Ludwig | — | 2 | 12 |
| Luther | police procedural, drama television series | 5 | 20 |
| Luv | sitcom | 2 | 18 |
| Lynley | drama television series, crime television series, mystery television series | — | — |
| M.I. High | crime television series, action television series, espionage television series, children's television series | 8 | 88 |
| Mad About Alice | sitcom | 1 | 6 |
| Maelstrom | thriller television series, mystery television series, drama television series | — | 6 |
| Magpie Murders | — | 1 | 6 |
| Maid Marian and her Merry Men | sitcom | 4 | 26 |
| Maisie Raine | detective fiction | 2 | 12 |
| Making Out | comedy drama | 3 | 24 |
| Making Your Mind Up | — | — | — |
| Mapp and Lucia | — | 1 | 3 |
| Marlene Marlowe Investigates | children's television series | 2 | 26 |
| Marriage Lines | sitcom | 5 | 44 |
| MasterChef | cooking show | — | — |
| Mastermind | game show | — | — |
| Match of the Day | sports journalism | 51 | — |
| Match of the Day 2 | — | — | — |