| Call My Bluff | BBC Two, BBC One | panel game | — | 125 |
| Call Red | ITV | drama television series | 1 | 7 |
| Call the Bailiffs: Time to Pay Up | — | — | — | — |
| Call the Gun Expert | BBC One | crime fiction | — | — |
| Call the Midwife | BBC One | medical drama, drama television series, historical drama | 15 | 133 |
| Callan | ITV | drama television series, adventure television series | 4 | 44 |
| Camberwick Green | BBC One | children's television series | 1 | 13 |
| Cambridge Spies | BBC Two | docudrama, LGBT-related television series | 1 | 4 |
| Camden | Disney+ | documentary, documentary television program | — | 4 |
| Camp Orange | Nickelodeon | reality television, children's television series | 2 | — |
| Camping | — | — | — | 6 |
| Campion | BBC One | — | 2 | 16 |
| Campion | — | — | — | — |
| Campus | Channel 4 | sitcom | 1 | 7 |
| Can Gerry Robinson Fix the NHS? | — | documentary television program | 2 | 4 |
| Can Seo | — | — | — | — |
| Can You Keep a Secret? | — | — | — | — |
| Can't Cook, Won't Cook | — | cooking show | 5 | 685 |
| Can't Get You Out of My Head: An Emotional History of the Modern World | BBC iPlayer | documentary film | — | 6 |
| Can't Pay? We'll Take It Away! | Channel 5 | reality television | 3 | 29 |
| Can't Touch This | BBC One | game show | 1 | 10 |
| Candy Cabs | BBC One | comedy television series | 1 | 3 |
| Canned Carrott | BBC One | comedy television series | 2 | 12 |
| Cannon and Balls Playhouse | ITV | — | 1 | 6 |
| Cannonball | ITV | game show | 1 | 8 |
| Cape Wrath | Channel 4 | — | 1 | 8 |
| Capital | BBC One | — | 1 | 3 |
| Capital City | ITV | drama television series | 2 | 24 |
| Capstick's Law | ITV | — | 1 | 6 |
| Captain Abercromby | — | — | — | 26 |
| Captain Butler | Channel 4 | sitcom | — | 6 |
| Captain Mack | — | — | — | 52 |
| Captain Scarlet and the Mysterons | ITV | science fiction television series, thriller television series, adventure television series | 1 | 32 |
| Captain Star | ITV | science fiction television series | 2 | 13 |
| Captains of the World | — | — | 1 | 6 |
| Capturing Mary | BBC Two | drama film | — | — |
| Car Booty | BBC One | — | 11 | 3 |
| Car SOS | National Geographic Channel (UK) | variety show | 12 | 122 |
| Cara Fi | S4C | — | 1 | 8 |
| Cardinal Burns | E4 | — | 2 | 12 |
| Cariad@iaith:love4language | — | — | — | — |
| Caribbean Cops | Channel One | documentary television program | 1 | 8 |
| Carnal Knowledge | ITV | erotica, game show | 1 | 30 |
| Carpool | U&Dave | talk show | 1 | 10 |
| Carrie and David's Popshop | CBeebies | — | 1 | 30 |
| Carrott's Lib | BBC One | comedy television series | 2 | 15 |
| Carry On Laughing | ITV | sitcom | 2 | 13 |
| Carters Get Rich | Sky One | — | 1 | 6 |
| Cartoonito Tales | — | — | — | — |
| Casanova | BBC Two | — | — | 6 |
| Casanova | BBC Three | biographical television series, drama television series | 1 | 3 |
| Case Histories | BBC One, British Broadcasting Corporation | drama television series | 2 | 9 |
| Cash Cab | ITV | game show | 2 | 16 |
| Cash in the Attic | BBC One | — | 6 | 586 |
| Cash Trapped | ITV | game show | 3 | 65 |
| Cast Offs | Channel 4 | drama television series | 1 | 6 |
| Castaway 2000 | BBC One | reality television | 1 | 32 |
| Castaway 2007 | BBC One, BBC Three | reality television | 1 | 13 |
| Castle Haven | — | — | — | 100 |
| Castles | BBC One | — | 1 | 24 |