| Kappatoo | — | 2 | 27 |
| Karen Pirie | crime film | 1 | 3 |
| Kate & Koji | sitcom | 1 | 6 |
| Katy Brand's Big Ass Show | — | 3 | 19 |
| Kavanagh QC | drama television series | 5 | 29 |
| Keep It in the Family | game show | 2 | 13 |
| Keynotes | game show | 5 | 205 |
| Kidnap and Ransom | — | 2 | 6 |
| Kids Say the Funniest Things | — | — | — |
| Kingdom | drama television series, comedy television series | 3 | 18 |
| Kinvig | sitcom, science fiction television series | 1 | 7 |
| Knight School | — | 2 | 13 |
| Lads' Army | reality television | 4 | 32 |
| Law & Order: UK | police procedural, drama television series, legal drama | 8 | 53 |
| Let's Roll with Roland Butter | — | 1 | — |
| Liar | drama | 2 | 12 |
| Life Begins at Forty | sitcom | 2 | 14 |
| Lift Off with Ayshea | children's television series | 8 | 144 |
| Lillie | — | 1 | 13 |
| Lily Live! | — | 2 | 12 |
| Limitless Win | game show | — | — |
| Lingo | game show | 5 | 180 |
| Little Boy Blue | drama fiction | 1 | 4 |
| Live from Her Majesty's | — | 7 | 43 |
| Living It Up | sitcom | 2 | 9 |
| London Bridge | soap opera | 4 | 237 |
| London's Burning | drama television series | 14 | 171 |
| Loose Women | talk show | 24 | — |
| Lorraine | LGBT-related television series, breakfast television | — | — |
| Lose A Million | game show | 1 | — |
| Lost in Austen | romance television series | 1 | 4 |
| Love for Lydia | — | — | 13 |
| Love Island | reality television | 2 | 5 |
| Love on a Saturday Night | — | 2 | 10 |
| Love Thy Neighbour | sitcom | 7 | 54 |
| Love Your Garden | — | 6 | 35 |
| Lucky Ladders | game show | 6 | 185 |
| Lucky Numbers | game show | 3 | 50 |
| Lucy Sullivan Is Getting Married | — | — | 16 |
| Luna | science fiction television series, comedy television series, children's television series | 2 | 12 |
| Madabout | — | 2 | 26 |
| Maggie and Her | sitcom | 2 | 14 |
| Magic Adventures of Mumfie | fantasy television program, children's television series | 3 | 79 |
| Magpie | — | — | — |
| Maigret | detective fiction, drama fiction | 2 | 4 |
| Maigret | crime film | 2 | 12 |
| Making Waves | drama television series | 1 | 6 |
| Malpractice | medical drama | 1 | 5 |
| Man About the House | sitcom | 6 | 39 |
| Man at the Top | — | — | — |
| Man O Man | game show | 2 | 23 |
| Man of the World | drama television series | 2 | 20 |
| Manhunt | drama television series | 2 | 7 |
| Manhunt | — | 2 | 26 |
| Marcella | drama television series, crime television series | 3 | 24 |
| Marked Personal | — | 1 | 90 |
| Market in Honey Lane | soap opera | 1 | 91 |
| Marmalade Atkins | — | 2 | 21 |
| Married for Life | sitcom | 1 | 7 |
| Married Single Other | comedy drama | 1 | 6 |