| Three of a Kind | — | — | — | — |
| Three Seven Eleven | ITV | — | 2 | 20 |
| Three Up, Two Down | BBC One | sitcom | 4 | 25 |
| Threesome | Q1114052 | comedy television series | 2 | 14 |
| Thriller | ITV | drama television series, anthology series | 6 | 43 |
| Thronecast | Sky Atlantic | talk show | 6 | 60 |
| Through Hell and High Water | — | documentary film | — | — |
| Through The Dragon's Eye | British Broadcasting Corporation | — | — | 10 |
| Through the Keyhole | ITV1 | comedy television series | 9 | 115 |
| Thumb Bandits | Channel 4 | — | 2 | 13 |
| Thunderbirds | ITV | science fiction television series, adventure television series, action television series, children's television series | 2 | 32 |
| Thunderbirds: The Anniversary Episodes | — | — | — | 3 |
| Thursday the 12th | — | — | — | — |
| Thursday Theatre | — | — | — | — |
| Thursday's Child | — | — | — | — |
| Tickets for the Titanic | — | — | — | — |
| Tickle on the Tum | ITV | — | — | 118 |
| Tickle patch and friends | Channel 5 | — | 11 | — |
| Tide | — | — | — | — |
| Tiger: Spy in the Jungle | BBC One | documentary, documentary film | — | — |
| Tikkabilla | CBeebies | — | 4 | 32 |
| TikTok: Murder Gone Viral | — | — | — | — |
| Till Death Us Do Part | BBC One | sitcom | 7 | 54 |
| Till Death... | ITV | sitcom | — | 6 |
| Tilly and Friends | CBeebies | — | 1 | 52 |
| Time | BBC One | crime film | 3 | 9 |
| Time | — | documentary film | — | — |
| Time After Time | — | — | — | — |
| Time Busters | — | — | — | — |
| Time Commanders | BBC Two | documentary television program, game show, machinima | 3 | 27 |
| Time Crashers | Channel 4 | — | 1 | — |
| Time Gentlemen Please | — | sitcom | 2 | 37 |
| Time of Our Lives | Sky Sports | — | — | — |
| Time Out for Peggy | — | sitcom | — | — |
| Time Riders | CITV | — | 1 | 4 |
| Time Signs | Channel 4 | — | 1 | 4 |
| Time Team | Channel 4, More4, U&Yesterday | documentary television program | 20 | 275 |
| Time Team Digs | Channel 4 | — | 1 | 8 |
| Time Team Extra | Channel 4 | — | 1 | 8 |
| Time Team Live | Channel 4 | — | 8 | 64 |
| Time Trumpet | BBC Two | comedy television series | 1 | 6 |
| Time2shine | — | reality television | — | — |
| Timekeepers | BBC One | game show | 2 | 73 |
| Timewasters | — | — | — | — |
| Timewatch | BBC Two | documentary film | — | — |
| Timmy Towers | CITV | — | — | 11 |
| Timothy Spall at Sea series | — | documentary film | — | — |
| Tin Star | Sky Atlantic | thriller television series | 3 | 25 |
| Tinkershrimp & Dutch | Nickelodeon | — | 1 | 5 |
| Tinsel Town | BBC Two Scotland | LGBT-related television series | 2 | 20 |
| Tiny and Crew | — | children's television series | — | 42 |
| Tiny and Mr Duk | BBC One | — | 1 | — |
| Tip Toe | Channel 4, Starz | psychological thriller, black comedy television series, drama television series | 1 | 5 |
| Tipping the Velvet | BBC Two | historical television series, LGBTQ-related film, LGBT-related television series | 1 | 3 |
| Tipsextra | Sveriges Television | — | — | — |
| Tipslördag | TV4 | — | — | — |
| Titanic | ITV, American Broadcasting Company | drama television series | 1 | 4 |
| Titanic: Blood and Steel | Antena 3 | historical fiction | 1 | 12 |
| Titmuss Regained | — | — | — | — |
| Tittybangbang | BBC Three | sketch comedy, comedy television series, LGBT-related television series | 3 | 21 |