| Black Books | Channel 4 | comedy television series | 3 | 18 |
| Black Doves | Netflix | thriller, action fiction, spy fiction | 1 | 6 |
| Black Earth Rising | BBC Two | drama | 1 | 8 |
| Black Mirror | Channel 4, Netflix | science fiction television series, drama television series, anthology series, dystopian television series, satirical television series, thriller television series | 7 | 34 |
| Black Narcissus | — | — | — | 3 |
| Black on Black | — | — | — | — |
| Black Ops | BBC One | comedy thriller | — | 6 |
| Black Work | ITV | — | 1 | 3 |
| Blackadder | BBC One | comedy television series, alternate history television series, historical television series | 4 | 27 |
| Blackadder II | BBC One | sitcom, alternate history television series | 1 | 6 |
| Blackout | BBC One | — | 1 | 3 |
| Blackpool | BBC One | drama television series | 1 | 6 |
| Blake's 7 | BBC One | science fiction television series, drama television series, adventure television series | 4 | 52 |
| Blandings | BBC One | sitcom | 2 | 13 |
| Blankety Blank | BBC One | game show, comedy television series | 17 | 266 |
| Bleak House | BBC One | drama television series | 1 | 15 |
| Bleak House | BBC Two | period drama film | 1 | 8 |
| Bleak House | British Broadcasting Corporation | drama television series | 1 | 11 |
| Bleep and Booster | — | — | — | — |
| Bless Me Father | ITV | sitcom | 3 | 21 |
| Bless This House | ITV | sitcom | 6 | 65 |
| Blessed | BBC One | sitcom | 1 | 8 |
| Blind Date | ITV1 | game show | 18 | — |
| Blind Men | — | — | — | 6 |
| Blips | ITV | — | — | 26 |
| Bliss | — | — | — | — |
| Blockbusters | ITV, Sky One, BBC Two, Challenge, Q1114052 | game show | — | — |
| Blood Money | — | — | 1 | 6 |
| Blood Rights | — | — | — | — |
| Blood, Sweat and T-shirts | BBC Three | documentary television program | — | 4 |
| Bloodlands | BBC One | — | — | — |
| Bloods | — | — | — | — |
| Bloody Britain | — | documentary television program | — | — |
| Bloomers | BBC Two | sitcom | — | 5 |
| Blott on the Landscape | BBC Two | — | 1 | 6 |
| Blouse and Skirt | BBC Two | comedy television series | 1 | 8 |
| Blue Heaven | — | documentary film | 1 | 6 |
| Blue Heaven | Channel 4 | sitcom | 1 | 7 |
| Blue Lights | BBC One | police procedural | 3 | 18 |
| Blue Murder | Katholieke Radio Omroep, ITV | drama television series | 5 | 19 |
| Blue Peter | BBC One | children's television | — | 5,460 |
| Blue Peter Special Assignment | BBC One | — | — | 39 |
| Bluebell | — | — | — | 8 |
| Bluebirds | — | — | 1 | 6 |
| Blues and Twos | — | — | — | — |
| Bluestone 42 | BBC Three | comedy drama | 3 | 21 |
| Blunder | Channel 4 | — | — | 6 |
| Bo' Selecta! | Channel 4 | LGBT-related television series | 5 | 45 |
| Boarders | BBC Three | teen drama television, comedy drama | 2 | 12 |
| Boats that Built Britain | BBC Four | documentary film, documentary television program | 1 | 6 |
| Bob & Rose | ITV | drama television series, LGBT-related television series | 1 | 6 |
| Bob Martin | ITV | sitcom | 2 | 12 |
| Bob Servant | BBC Four | sitcom | 2 | 9 |
| Bob the Builder | MediaCorp Channel 5 | — | 3 | 130 |
| Bob's Full House | BBC One | — | 6 | 109 |
| Bobinogs | CBeebies | — | 1 | 98 |
| Bod | British Broadcasting Corporation | — | — | 13 |
| Bodger & Badger | BBC One | — | 9 | 124 |
| Bodies | BBC Three | medical drama | 2 | 17 |
| Body Shock | Channel 4 | documentary television program | — | — |