| That'll Teach 'Em | Channel 4 | reality television | 3 | 15 |
| That's Britain! | BBC One | — | 1 | 4 |
| That's Genius! | BBC One | — | — | 6 |
| That's Life! | BBC One | satirical television series | 21 | 442 |
| That's Love | ITV | sitcom | 4 | 26 |
| That's My Boy | — | sitcom | — | — |
| That's My Boy | ITV | sitcom | 5 | 37 |
| That's My Jam | — | — | — | — |
| That's Showbusiness | BBC One | — | 8 | 140 |
| That's the Question | — | game show | 1 | 30 |
| That's Your Funeral | BBC One | sitcom | — | 6 |
| The $64,000 Question | — | game show | — | — |
| The 10 Percenters | ITV | sitcom | 2 | 14 |
| The 100 Greatest TV Ads | Channel 4 | — | — | — |
| The 11 O'Clock Show | Channel 4 | satire | 5 | 144 |
| The 1900 House | Channel 4 | reality television | 1 | 10 |
| The 21st Question | — | game show | 1 | 10 |
| The 45 Rules of Ever After | MBC 4 | comedy drama | 5 | 45 |
| The 5 O'Clock Show | Channel 4 | talk show | 1 | 40 |
| The 607080 Show | — | — | — | — |
| The 7 O'Clock News | BBC Three | — | — | — |
| The 70s | BBC Two | documentary film | 1 | 4 |
| The 8:15 from Manchester | British Broadcasting Corporation | children and youth program | 2 | 43 |
| The 99 | Discovery Family | — | 2 | 52 |
| The A List | British Broadcasting Corporation | thriller television series | 2 | 21 |
| The A Word | BBC One, British Broadcasting Corporation | drama | 3 | 18 |
| The ABC Murders | BBC One | mystery television series | 1 | 3 |
| The Accident | Channel 4 | drama television series | 1 | 4 |
| The Adam and Joe Show | Channel 4 | — | — | 22 |
| The Adventure Game | BBC One | — | 4 | 22 |
| The Adventure of English | ITV | documentary television program, drama television series | — | 8 |
| The Adventure Show | — | — | — | — |
| The Adventurer | ITC Entertainment | drama television series | 1 | 26 |
| The Adventures of a Jungle Boy | broadcast syndication | — | 1 | 13 |
| The Adventures of Aggie | ITV | sitcom | — | 26 |
| The Adventures of Ben Gunn | — | — | — | — |
| The Adventures of Black Beauty | ITV | drama television series | 2 | 52 |
| The Adventures of Brigadier Wellington-Bull | BBC One | sitcom | — | 5 |
| The Adventures of Don Quick | ITV | science fiction television series | 1 | 6 |
| The Adventures of Parsley | BBC One | children's television series | — | 32 |
| The Adventures of Peter Simple | — | — | — | — |
| The Adventures of Portland Bill | ITV | children's television series | — | 26 |
| The Adventures of Robin Hood | ITV | drama television series | 4 | 143 |
| The Adventures of Robinson Crusoe | BBC One | adventure film | 1 | 13 |
| The Adventures of Rupert Bear | ITV | — | — | 156 |
| The Adventures of Sir Lancelot | ITV | drama television series | 1 | 30 |
| The Adventures of Sir Prancelot | — | children's television series | — | 31 |
| The Adventures of the Big Man | — | — | — | — |
| The Adventures of the Scarlet Pimpernel | ITV | drama television series, historical television series | 1 | 18 |
| The Adventures of Twizzle | ITV | fantasy television program | 1 | 52 |
| The Adventures of William Tell | ITV | — | 1 | 39 |
| The Africans: A Triple Heritage | — | — | — | — |
| The Afternoon Play | BBC One | drama television series, anthology series | 5 | 25 |
| The Agatha Christie Hour | ITV | — | 1 | 10 |
| The Age of the Automobile | British Broadcasting Corporation | documentary film | — | — |
| The Age of Uncertainty | — | documentary film | — | 15 |
| The Agenda with Tom Bradby | ITV | — | 9 | 84 |
| The Airbase | British Broadcasting Corporation | sitcom | — | 6 |
| The Alan Clark Diaries | BBC Four | docudrama | 1 | 6 |
| The Alan Titchmarsh Show | ITV | — | 15 | 790 |