| The Zodiac Game | ITV | game show | 2 | 29 |
| The Zoo | Cartoon Network | children's television series | 2 | 15 |
| The Zoo Gang | ITV | — | 1 | 6 |
| Theatre 625 | BBC Two | anthology series | — | — |
| Theatre 70 | — | — | — | — |
| Theatre Date | — | — | — | — |
| Theatre Night | BBC Two | — | 5 | 28 |
| Theatre Parade | — | — | — | — |
| Then Barbara Met Alan | — | — | — | — |
| Then Churchill Said to Me | — | comedy television series | 1 | 6 |
| Then You Run | Q108084483 | thriller television series | — | — |
| There She Goes | BBC Four | — | — | — |
| There's No Taste Like Home | — | — | 1 | 30 |
| There's Something About Miriam | Sky One | reality television, LGBT-related television series | 1 | 6 |
| They Came From Somewhere Else | Channel 4 | sitcom | 1 | 6 |
| They Think It's All Over | BBC One | panel game, comedy television series | 19 | 154 |
| They Who Dare | BBC Two | documentary film | — | — |
| Thick as Thieves | London Weekend Television | — | — | 8 |
| Thieves Like Us | BBC Three | sitcom | 1 | 6 |
| Thin Ice | BBC Two | sitcom | 1 | 6 |
| Third Time Lucky | — | — | — | — |
| Thirteen Against Fate | — | — | 1 | 13 |
| Thirteen Steps Down | ITV1 | thriller television series | 1 | 2 |
| Thirty-Minute Theatre | BBC Two | anthology series | — | 286 |
| This City Is Ours | BBC One | — | 1 | 8 |
| This Country | BBC Three | mockumentary | 3 | 19 |
| This is David Lander | Channel 4 | — | 2 | 12 |
| This Is Dom Joly | — | comedy television series | — | — |
| This Is England | — | drama film | — | — |
| This Is England '86 | Channel 4 | drama television series, coming-of-age television program | 1 | 4 |
| This Is England '88 | Channel 4 | drama television series, coming-of-age television program | 1 | 3 |
| This Is England '90 | Channel 4 | drama television series, coming-of-age television program | 1 | 4 |
| This Is Going to Hurt | British Broadcasting Corporation | comedy drama, medical drama | 1 | 7 |
| This is Jinsy | BBC Three, Sky Atlantic | surreal humour, sitcom, comedy television series | 2 | 17 |
| This is Modern Art | — | — | — | — |
| This Is Petula Clark | — | — | — | — |
| This Is Tom Jones | ITV1 | — | 3 | 65 |
| This Is Your Life | BBC One, ITV | documentary television program | 43 | 1,130 |
| This Life | BBC Two | drama television series, LGBT-related television series | 2 | 33 |
| This Man Craig | — | — | — | — |
| This Morning | ITV1 | — | 37 | — |
| This Morning Summer | — | — | 7 | — |
| This Time Tomorrow | BBC One | game show | 1 | 8 |
| This Time with Alan Partridge | BBC One | — | — | — |
| This Town | BBC One | — | — | 6 |
| This Way Up | Channel 4 | — | — | — |
| This Week | ITV | — | — | — |
| This Week | BBC One | — | — | — |
| This World | BBC Two | documentary film, current affairs | — | — |
| Thomas & Friends: Digs & Discoveries | — | — | — | — |
| Thomas & Sarah | ITV | drama television series | — | 13 |
| Thompson | — | comedy television series | 1 | 6 |
| Thorndyke | — | — | — | — |
| Thorne | — | police procedural, drama television series | 1 | 6 |
| Those Kids | — | — | — | — |
| Those Scurvy Rascals | Nickelodeon | pirates television series | 1 | 26 |
| Three Girls | BBC One | drama television series | 1 | 3 |
| Three Little Birds | — | historical drama | 1 | 6 |
| Three Little Words | — | game show | — | — |
| Three Men in a Boat | BBC Two | documentary film | 7 | 14 |