| The White Queen | BBC One | romance television series | 1 | 10 |
| The White Rabbit | — | — | — | — |
| The Whitehall Worrier | — | — | — | — |
| The Whole 19 Yards | — | game show | 1 | 8 |
| The Widow | ITV, Amazon Prime Video | — | 1 | 8 |
| The Widow of Bath | — | thriller | 1 | 6 |
| The Widower | ITV | drama television series, crime film | 1 | 3 |
| The Wild House | BBC Children's and Education | — | 3 | 37 |
| The Wild Ones | Apple TV | documentary, nature documentary | — | 6 |
| The Windsors | Channel 4 | sitcom | 3 | 6 |
| The Winifred Atwell Show | — | — | — | — |
| The Winjin Pom | ITV Central | — | 1 | 6 |
| The Winter King | MGM+, ITVX | historical drama | 1 | 10 |
| The Witch Doctor Will See You Now | — | documentary television program | — | 4 |
| The Witchfinder | — | — | — | — |
| The Wives | — | — | — | — |
| The Woman in the Wall | — | psychological thriller, crime film | — | 6 |
| The Woman in White | — | — | — | — |
| The Woman in White | — | — | — | — |
| The Wombles | ITV | — | 3 | 52 |
| The Woodentops | BBC Television | children's television series | — | 26 |
| The Word | Channel 4 | — | 5 | 104 |
| The Work Experience | E4 | sitcom | 1 | 6 |
| The Worker | — | sitcom | 5 | 35 |
| The World About Us | — | — | — | — |
| The World at War | ITV | documentary television program | 1 | 26 |
| The World From Above | — | documentary film | — | — |
| The World of Eric Carle | — | — | — | 5 |
| The World Of Hammer | — | — | — | — |
| The World Today | — | — | — | — |
| The World Today with Maryam Moshiri | BBC News | — | — | — |
| The World's Greatest Elvis | — | — | — | — |
| The Worst Jobs in History | — | — | — | — |
| The Worst of Hollywood | — | — | — | — |
| The Worst Week of My Life | BBC One | sitcom | 2 | 17 |
| The Worst Witch | ITV | children's television series, fantasy television series | 3 | 40 |
| The Worst Witch | BBC Children's and Education, CBBC | fantasy television series | 4 | 52 |
| The Wright Stuff | Channel 5 | talk show | — | — |
| The Wright Way | BBC One | sitcom | 1 | 6 |
| The Write Offs | Channel 4 | documentary television program | — | 2 |
| The Wrong Door | BBC Three | comedy television series | 1 | 7 |
| The Wrong Mans | BBC Two | comedy drama | 2 | 8 |
| The X Creatures | British Broadcasting Corporation | documentary film | 1 | 6 |
| The X Factor | ITV | talent show, music program | 15 | 445 |
| The X Factor: Battle of the Stars | — | — | — | — |
| The X Factor: Celebrity | ITV | talent show | 1 | 8 |
| The X Factor: The Band | ITV | talent show | 1 | 4 |
| The XYY Man | ITV | thriller television series | 2 | 13 |
| The Year of the French | — | — | — | — |
| The Yorkshire Vet | Channel 5 | documentary television program | 14 | — |
| The Young Ones | BBC Two | sitcom, sketch comedy, college life television program | 2 | 12 |
| The Young Person's Guide to Becoming a Rock Star | Channel 4 | — | 1 | 6 |
| The Young Pope | Sky Atlantic, HBO, Canal+ | drama television series | 1 | 10 |
| 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 |