| Worzel Gummidge | BBC One | fantasy television series, drama television series | 1 | 2 |
| Worzel Gummidge Down Under | — | — | — | 22 |
| Worzel Gummidge Turns Detective | — | — | — | — |
| Would I Lie to You? | BBC One, British Broadcasting Corporation | panel game, comedy television series | 13 | 110 |
| Would Like to Meet | BBC Two | reality television | 3 | — |
| WOW! | ITV | — | 1 | 16 |
| WPC 56 | BBC One | police procedural | 3 | 15 |
| Wreck | BBC Three | — | 2 | 12 |
| Wrecked | MTV | — | 1 | 8 |
| Wrestle Talk TV | — | — | 7 | — |
| Wright Around the World | BBC One | — | 2 | 18 |
| Wudja Cudja | — | game show | — | — |
| Wuthering Heights | — | — | — | 4 |
| Wuthering Heights | — | — | — | 2 |
| Wuthering Heights | BBC Two | — | — | 5 |
| WWII: Battles for Europe | — | documentary television program | — | — |
| Wyatt's Watchdogs | British Broadcasting Corporation, BBC Television | sitcom | 1 | 6 |
| WYSIWYG | ITV | — | — | — |
| X-Fire | Channel 4 | game show | 2 | 12 |
| X-perimental | BBC One | — | 2 | 26 |
| X-Ray Mega Airport | Discovery Channel | documentary television program | 1 | 5 |
| Xchange | CBBC | — | — | 2,012 |
| XYZ | BBC One | game show | 1 | 32 |
| Y Byd ar Bedwar | — | — | — | — |
| Y Goleudy | S4C | — | — | — |
| Y Stiwdio Gefn | — | — | — | — |
| Yanks Go Home | ITV | sitcom | 2 | 13 |
| Year of the Rabbit | — | — | — | — |
| Yeardot | — | — | — | — |
| Years and Years | BBC One | science fiction television series | 1 | 6 |
| Yellowstone | BBC Two | nature documentary | — | 3 |
| Yellowthread Street | ITV | police procedural | 1 | 13 |
| Yes Minister | BBC Two | comedy television series, political satire | 5 | 37 |
| Yes, Honestly | London Weekend Television | sitcom | 2 | 26 |
| Yes, It's the Cathode-Ray Tube Show! | — | — | — | — |
| Yes, Prime Minister | British Broadcasting Corporation | sitcom, political satire | 2 | 16 |
| Yesterday's Dreams | ITV | drama television series | 1 | 7 |
| Yesterday, Today & The Day Before | — | comedy, current affairs, political satire, late-night talk show | — | — |
| Yoho Ahoy | BBC Children's and Education | — | 2 | 39 |
| Yoko! Jakamoko! Toto! | CITV, CBeebies | children's television series | 2 | 28 |
| Yonderland | — | — | 3 | 16 |
| Yorkshire Firefighters | BBC Two | — | 1 | 4 |
| You and Me | BBC One | — | — | — |
| You Are Here | BBC One, Starz | drama television series, romance television series | — | 8 |
| You Are What You Eat | Channel 4 | — | 4 | 9 |
| You Can't Win | ITV | drama television series | 1 | 7 |
| You Cannot Be Serious | — | — | 1 | 6 |
| You Don't Know Me | — | crime fiction | — | — |
| You Don't Know You're Born | ITV1 | — | 1 | 3 |
| You Have Been Watching | Channel 4 | panel game | 2 | 16 |
| You Know What People Are | — | — | — | — |
| You Look Stunning Too | — | comedy television program, romance television series | 1 | 6 |
| You Must Be The Husband | BBC One | sitcom | 2 | 13 |
| You Rang, M'Lord? | BBC One | sitcom | 4 | 26 |
| You Saw Them Here First | — | — | — | 7 |
| You Should Be So Lucky | British Broadcasting Corporation | — | — | 12 |
| You Vs. Chris & Kem | — | — | — | — |
| You're Back in the Room | — | — | 2 | 10 |
| You're Only Young Twice | ITV | sitcom | 4 | 31 |
| You're Only Young Twice | — | — | — | — |