
C is for... Call My Bluff - This show enjoyed not one but two lengthy runs, totalling 34 years on our screens. In contrast, the original US version lasted just one season before being cancelled.
| Title | Genre |
| Cabbages and Kings | Panel game |
| The Cabins | Dating, reality |
| Cadair Fawr Eleri Sion | Chat, variety, regional (Wales) |
| Cafflo | General Knowledge Quiz, regional (Wales) |
| Caledonia MacBrains | Comedy panel game |
| Calendar Commentary Christmas Quiz | Politics, regional (YTV region) |
| Call My Bluff | Panel game |
| Call the Tune | Radio, panel game |
| Call That Hard Work? | Lifestyle |
| Call Yourself a Detective! | Radio, panel game |
| Call Yourself a Fan | Football quiz |
| Camau Cantamil | Childrens |
| Camigram | |
| Camp Orange | Childrens, action and adventure |
| Campyfan | Childrens, Educational |
| Can Do | Stunts and dares |
| Can i Gymru | Variety, regional (Wales) |
| Can I Improve My Memory? | Memory |
| Cannon and Ball's Casino | Family game show |
| Cannonball | Stunts and dares |
| Can't Cook, Won't Cook | Lifestyle |
| Can't Sing Singers | Variety |
| Can't Touch This | Stunts and dares |
| 100 o Blant | Regional (Wales), family |
| Cant y Cant | Sport, regional (Wales) |
| Can We Still be Friends? | Dating |
| Match of the Day Can You Kick It? | Sport, childrens |
| Car Booty | Lifestyle |
| Car Duels | Action and adventure |
| Car Hunt | Lifestyle |
| Car Sharks | Lifestyle |
| Cardiff Singer of the World | Variety |
| Carnal Knowledge | Quiz, themed (sex) |
| Captain Zep - Space Detective | Childrens |
| Carnage | Technological |
| Carnival Time | Variety, regional (Anglia) |
| The Carrot or the Stick | Reality |
| Carry On Campus | Quiz, academic |
| Cartoonists' Contest | Creative (cartoons) |
| Caru Siopa | Lifestyle, regional (Wales) |
| Casa Dudley | Cookery, regional (Wales) |
| Cash Cab | Quiz, general knowledge |
| Cash Call | Radio, puzzle |
| Cash Lounge | Puzzle |
| The Cash Machine | General knowledge quiz, regional (Scotland) |
| Cash Trapped | Quiz, general knowledge |
| Casino Casino | Sports |
| Casting Couch | Comedy panel game (celebrity gossip) |
| Catchphrase | Puzzle |
| Catchpoint | Family game show |
| Catchword | Puzzle |
| Catering Challenge | Lifestyle |
| Caught in the Act | Variety |
| CCTV | Stunts and dares |
| Celeb Cooking School | Lifestyle |
| Celebability | Stunts and dares |
| CelebAir | Reality (celebrities) |
| Celebdaq | Business |
| Celebrities Under Pressure | Family game show |
| Celebrity Addicts | Quiz, themed (celebrities) |
| Celebrity Bear Hunt | Reality |
| Celebrity Challenge | |
| Celebrity Craft Masters | Lifestyle |
| Celebrity Ding Dong | Comedy panel game |
| Celebrity Fit Club | Reality |
| Celebrity Five Go to... | Lifestyle, reality |
| The Celebrity Game | |
| Celebrity Game Night | Late-night variety challenges |
| Celebrity Gossip | Panel game, radio |
| Celebrity Juice | Comedy panel game (celebrity) |
| Celebrity Karaoke Club | Singing, reality |
| Celebrity Love Island | Reality |
| Celebrity Murder Mystery | Reality, crime |
| Celebrity Poker Club | Sports |
| Celebrity Pressure Cooker | Lifestyle |
| Celebrity Scissorhands | Reality |
| Celebrity Showmance | Lying |
| Celebrity Snoop Dogs | Lifestyle |
| Celebrity Spelling Bee | Quiz, themed (spelinge) |
| Celebrity Squares | Family game show |
| Celebrity Super-Spa | Recruitment, lifestyle |
| Celebrity Wrestling | Sports, reality |
| Celebs on the Farm | Reality, agriculture |
| Celwydd Noeth | General knowledge quiz, regional (Wales) |
| Censored | Comedy panel game, radio |
| Centenary Rugby Quiz | Regional (Wales), themed quiz (rugby) |
| Cerdyn Post | Regional (Wales), Quiz, themed (travel) |
| Chained | Dating show |
| Chain Letters | Puzzle |
| The Chair | Quiz, general knowledge |
| The Challenge (1) | |
| The Challenge (2) | Reality |
| Challenge Anneka | Action and adventure |
| Challenge of a Lifetime | Stunts and dares |
| Challenge of the Sexes | Sport |
| Challenge of the South | Quiz, general knowledge |
| Challenge Trophy | Regional (Anglia), Academic quiz |
| Championship Gaming Series | Technological |
| Chances Fair and Choosers True | Panel game |
| Change Partners | Panel game |
| Change Your Tune | Variety |
| Channel One Quiz | Regional (Northern Ireland), academic quiz |
| Chapter and Verse | Radio, panel game |
| Chariot Race | Sports |
| The Charm Offensive | Phone-in |
| Chart Quiz | Radio, themed quiz (pop music) |
| The Chase | Quiz, general knowledge |
| Chase the Case | Quiz, general knowledge |
| Chasing Time | Action and adventure |
| Cheap Cheap Cheap | Lifestyle |
| Cheat | General Knowledge Quiz |
| Chef V Britain | Lifestyle |
| Chef vs Corner Shop | Lifestyle |
| Chefs and the City | Lifestyle |
| The Chefs' Brigade | Travel, reality |
| Chefs on Trial | Recruitment, cookery |
| Cheggers Plays Pop | Childrens |
| Chess Masters: The Endgame | Sport (Chess) |
| Child's Play | Family game show |
| Chit for Chat | Radio, panel game |
| Chocolate | Childrens |
| The Chocolate Challenge | Cookery |
| The Choir | Singing |
| The Chop | Woodwork |
| Chopping Block | Cookery, reality |
| Chris Moyles' Quiz Night | Quiz, general knowledge |
| The Chris Ramsey Show | Variety |
| Radio 3 Christmas Quiz | Radio, themed quiz (music) |
| Chwalu Pen | Radio panel game, regional (Wales) |
| Chwilio am Seren | Childrens, variety, regional (Wales) |
| Cinio Caru | Dating |
| The Circle | Reality |
| Cirque de Celebrité | Reality |
| City Limits Live | Travel |
| Clan Clash | Radio, regional (Scotland), general knowledge quiz |
| Clash | Childrens, music |
| Class Distinction | Regional, Quiz (academic) |
| Class of... | Quiz, themed (nostalgia) |
| Classic Comeback | Quiz, themed (television nostalgia) |
| Classical Star | Reality, Variety |
| Cleas | Childrens |
| Clever Creatures | Childrens |
| The Clever Dick-Athlon | Radio panel game |
| The Clever Stupid Game | Radio, panel game |
| Cleverdicks | Quiz, general knowledge |
| Clever v Stupid | Stunts and dares |
| Clipjoint | Comedy panel game (pop video) |
| Clockwise | Childrens |
| The Club | Reality |
| Club Cupid | Regional (Scotland), Dating |
| Cluedo | Board game conversion |
| Clutter Nutters | Childrens |
| Coach Trip | Reality, travel |
| Còcaire nan Còcairean | Lifestyle |
| Cock of the Border | Variety, regional (Border) |
| The Code | General knowledge quiz |
| Codex | Action and adventure |
| Codi Canu | Music, reality |
| Cog1nio | Cookery, regional (Wales) |
| Coleen's Real Women | Lifestyle |
| The Colour of Money | Family game show |
| Combat | Action and adventure |
| Combat Cars | Technological |
| Come and Have a Go If You Think You're Smart Enough | Quiz, general knowledge |
| Come Dancing | Variety |
| Come Date with Me | Lifestyle, dating |
| Come Dine with Me | Lifestyle |
| Comedians Giving Lectures | Lectures, comedy |
| The Comedy Quiz | Radio panel game |
| Comedy World Cup | Comedy panel game |
| Come Fly with Me | Action and adventure |
| Come on Down! The Game Show Story | Documentary |
| Commando VIP | Action and adventure |
| Commercial Break | Quiz, themed (advertising) |
| The Common Denominator | General knowledge, puzzle |
| Commonwealth Quiz | Radio, academic quiz |
| Commuter Quiz | Puzzle |
| Compete for the Meat | Quiz, general knowledge |
| The Complaints Department | Comedy panel game |
| Computer Challenge | Technological |
| Concentration | Puzzle |
| The Concert | Quiz, general knowledge |
| The Conch Quiz | Radio, panel game (natural history) |
| Concro'r Cwm | Regional (Wales), Childrens |
| Confessions | Stunts and dares |
| Confidential Quiz | Panel game |
| Connect 4 | Childrens, board game conversion |
| Connections (1) | Quiz, general knowledge |
| Connections (2) | Quiz, general knowledge |
| Connoisseur | Quiz, themed (art) |
| Conquer the Castle | Reality, regional (Scotland) |
| Consequently | Comedy panel game |
| Cook Me the Money | Lifestyle, business |
| Cookery School | Lifestyle |
| Cooking It | Lifestyle |
| Cooking Up a Fortune | Lifestyle |
| Cooking Up Love | Lifestyle |
| Cooking With the Stars | Lifestyle |
| Cooks to Market | Lifestyle |
| Cool Cube | (see: The Satellite Game) |
| The Cooler | Quiz, general knowledge |
| Copycats | Childrens |
| Côr Cymru | Variety, regional (Wales) |
| Corner Shop Cook-Off | Cookery, regional (Scotland) |
| Coronation Street: The Big 50 | Quiz, themed (soap opera) |
| Countdown | Puzzle |
| Countdown (music quiz) | (see: Pop the Question) |
| Counterpoint | Radio quiz, themed (music) |
| Country Bee | Radio, themed quiz (rural life) |
| Country Challenge | Lifestyle, regional (North East) |
| The Country Game (1) | Panel game (rural matters) |
| The Country Game (2) | Lifestyle, country pursuits |
| Country House Cooking Contest | Lifestyle |
| County Count | Radio, panel game, geography |
| County Quiz | Radio, childrens, spelling bee |
| Crack It | Childrens |
| Crackerjack | Childrens |
| Crafwr | Childrens, regional (Wales) |
| The Cram | Quiz, themed (current affairs) |
| Crazy Beaches | Interactive |
| Crazy Comparisons | Panel game |
| Crazy Contraptions | Technological |
| Crazy Cottage | Childrens |
| Crazy Delicious | Cookery |
| Crazy Drivers | Quiz, themed (motoring) |
| Crime Team | Lifestyle |
| Crisis Command: Could You Run the Country? | Decision Making |
| Crisis Control | Childrens |
| Criss Cross Quiz | Quiz, general knowledge |
| Crooners' Corner | Radio, variety |
| Cross Channel Quiz | Radio, panel game |
| Cross Combat | Childrens, regional (Anglia and Meridian) |
| Cross Questioned | Radio, panel game |
| Crosswits | Puzzle |
| Crossword | Puzzle |
| Crossword on 2 | Puzzle |
| Cruel Summer | Stunts and dares |
| Cruise Quiz | Radio, academic quiz |
| Crush | Childrens |
| Crush a Grape | Childrens |
| Cryer's Crackers | Panel game |
| Cryptogram | Puzzle |
| Cryptotunes | Radio, panel game |
| The Crystal Maze | Action and adventure |
| Ctrl Freaks | Stunts and dares, regional (London) |
| The Cube | Stunts and dares |
| Cuckoo in the Nest | Panel game |
| Cuibhlichean an Fhortain | Regional (Scotland), lifestyle |
| Culinary Genius | Cookery |
| The Culture Club | Quiz, themed (arts) |
| Curiosity | Antiques |
| Curious Creatures | Panel game, animals |
| The Customer Is Always Right | Lifestyle inventions |
| Cwis Cymru | Quiz, regional (Wales) |
| Y Cwis Mawreddog | Radio, Wales |
| Cwis Meddiant | Themed quiz (sports), regional (Wales) |
| Cwis Pop C2 | Themed quiz (pop music) |
| Cyberzone | Action and adventure |
| Cyfle Byw | Phone-in, regional (Wales) |
| .cym | Comedy panel game, regional (Wales) |
| Cymar Pwy | Panel Game, regional (Wales) |
| Cyrraedd y Nod | Regional (Wales), Childrens |
| Cythraul Canu | Music panel game, regional (Wales) |
| Cythrel Canu | Music panel game, regional (Wales) |