| Tattoo Fixers | E4 | 2 | 71 |
| That'll Teach 'Em | Channel 4 | 3 | 15 |
| The 1900 House | Channel 4 | 1 | 10 |
| The All Star Talent Show | — | 1 | 6 |
| The Apprentice | BBC Two | 19 | 132 |
| The Apprentice: You're Fired! | BBC Two | 11 | 110 |
| The Baby Borrowers | BBC Three | 2 | 8 |
| The Big Flower Fight | Netflix | — | — |
| The Big Time | BBC One | 3 | 15 |
| The Bionic Vet | BBC One | 1 | 6 |
| The Bridge | HBO Max, Channel 4 | 1 | 6 |
| The Charlotte Crosby Experience | TLC | 1 | 5 |
| The Choir | BBC Two, British Broadcasting Corporation | 6 | — |
| The Club | ITV, ITV2 | 1 | 2 |
| The Devil's Dinner Party | Sky Atlantic | 1 | 20 |
| The Door | ITV | 1 | 2 |
| The Experiment | British Broadcasting Corporation | 1 | 5 |
| The Face | — | 1 | 8 |
| The Farm | Channel 5 | 2 | 22 |
| The Games | Channel 4 | 4 | — |
| The Garage | Discovery Channel | 3 | 32 |
| The House | BBC Two | 1 | 6 |
| The House of Tiny Tearaways | — | 4 | 95 |
| The Hunks | — | — | — |
| The Island with Bear Grylls | Channel 4 | 4 | — |
| The Last Millionaire | — | 1 | 6 |
| The Living Soap | — | — | — |
| The Lock Up | BBC Three | 2 | 10 |
| The Masked Dancer | — | — | — |
| The Match | Sky One | — | — |
| The Mole | Channel 5 | 2 | 18 |
| The Monastery | BBC Two | 1 | 4 |
| The Murder Game | BBC One | 1 | 9 |
| The One and Only | BBC One | 1 | 6 |
| The Only Way Is Essex | ITV2 | 32 | 395 |
| The Race | — | 1 | 7 |
| The Real Housewives of Cheshire | Q16995238 | 11 | 116 |
| The Repair Shop | British Broadcasting Corporation | — | — |
| The Restaurant | BBC Two | 3 | 30 |
| The Salon | — | 2 | 32 |
| The Secret Millionaire | Channel 4 | 10 | 67 |
| The Sex Inspectors | — | — | — |
| The Singer Takes It All | Channel 4 | 1 | 4 |
| The Specials | — | 2 | 13 |
| The Steam Room | — | — | 22 |
| The Supervet | Channel 4 | — | — |
| The Undateables | Channel 4 | 5 | 23 |
| The Valleys | MTV | 3 | 22 |
| There's Something About Miriam | Sky One | 1 | 6 |
| Time2shine | — | — | — |
| TNA British Boot Camp | — | 1 | 6 |
| To Buy or Not to Buy | BBC One | — | — |
| Too Hot to Handle | Netflix | 6 | 53 |
| Tool Academy | E4 | 3 | 24 |
| Totally Jodie Marsh | MTV | — | 9 |
| Trade Your Way to the USA | CBBC | 3 | 30 |
| Traffic Cops | BBC One, BBC Three | 14 | 105 |
| Trinny & Susannah Undress the Nation | — | 2 | 13 |
| Trinny & Susannah Undress... | ITV1 | 2 | 9 |
| Trust Me – I'm a Beauty Therapist | — | — | — |