Index I
I is for... Interruption - Where a contestant has pressed their buzzer before the host has finished reading out the question. Interruptions are generally discouraged in quiz shows since they prevent the viewer from answering the question. Interruptions can be reduced or eliminated by introducing a swerve to some questions, fining contestants for incorrect interruptions, or disabling the buzzers until the question has been read out.
Shows
| Title | Genre |
| I Blame the Spice Girls | Comedy panel game (television) |
| I Can Do That | Childrens |
| I Don't Like Mondays | Stunt/dare show |
| I Guess That's Why They Call It the News | Radio, comedy panel game (news) |
| I Love My Country | Comedy panel game |
| I Packed My Bag | Quiz, themed (memory) |
| I Suppose You Think That's Funny | Comedy panel game (comedy) |
| I Survived a Zombie Apocalypse | Reality, horror |
| Ice Warriors | Action/adventure |
| I'd Do Anything (1) | Stunt/dare show |
| I'd Do Anything (2) | Variety, reality |
| Identity | Decision making |
| If I Ruled the World... | Comedy panel game (politics) |
| I'll Get This | Dinner-table stunts |
| I'm an Aussie... Get Me Out of Here! | Reality |
| I'm a Celebrity... Get Me Out of Here! | Reality |
| I'm Famous and Frightened! | Reality |
| The Imitation Game | Comedy panel game |
| !mpossible | Quiz, general knowledge |
| Impossible? | Variety, decision making |
| The Impressionists | Radio, comedy panel game |
| Impromptu | Comedy panel game |
| Improvisation My Dear Mark Watson | Comedy panel game |
| I'm Sorry I Haven't a Clue | Radio, comedy panel game |
| I'm Spartacus | Radio, comedy panel game (film) |
| I'm the Answer | Quiz, general knowledge |
| Incognito | Puzzle |
| Incredible Edible Challenge | Stunt/dare show |
| Incredible Games | Childrens |
| Indecent Proposals | Stunt/dare show |
| The Indoor League | Sports |
| In for a Penny | Family show |
| In It to Win It | Quiz, general knowledge |
| In My Opinion | Panel game |
| Innovation Nation | Technological |
| Inn Quiz | Quiz, general knowledge |
| Insert Name Here | Comedy panel game |
| Inside Clyde | Childrens |
| The Insider | Recruitment |
| Insides Out | Childrens |
| Inspiration! | Radio quiz, themed (science and inventions) |
| Instant Restaurant | Lifestyle |
| Inter Regional Spelling Competition | Radio, childrens |
| Interior Rivalry | Lifestyle, business |
| Interpub | Quiz, general knowledge |
| Intellect | Puzzle |
| Interceptor | Action/adventure |
| International Bridge Club | Sports (bridge) |
| Interior Design Masters | Lifestyle, interior design |
| International King of Sports | Sports |
| The Interrogators | Action/Adventure |
| In the Dark | Stunt/dare show |
| In the Grid | Family game show |
| Intuition | Family game show, regional (East of England) |
| Invasion | Quiz, themed (Wales) |
| IQ/NI | Regional (Northern Ireland) quiz |
| Iron Chef UK | Lifestyle |
| It Pays to Behave | Comparative parenting |
| It Strikes a Chord | Quiz, themed (music) |
| It's a Knockout/Jeux Sans Frontieres | Stunt/dare show |
| It's a Mystery | Panel game |
| It's Anybody's Guess | Family game show |
| It's Anyone's Game | Regional quiz, themed (sports) |
| It's Beadle | Stunt/dare show |
| It's Going to Penalties | Comedy panel game (sports) |
| It's Not Fair | Childrens |
| It's Not Me, It's You | Comedy panel game |
| It's Not the Answer | Quiz, general knowledge |
| It's Not What You Know (1) | Quiz, general knowledge |
| It's Not What You Know (2) | Radio, panel game |
| It's Now or Never | Stunts and dares |
| It's Only A Theory | Philosophy, panel game |
| It's Only TV... But I Like It | Quiz, themed (television) |
| It's Patently Obvious | Panel game |
| It's Torture! | Childrens |
| It's Tough at the Top | Childrens |
| It's Your Round | Radio, Comedy panel game |
| It's Your Word | Childrens |
| ITV Play | Puzzle |
| ITV Soap Challenge | Quiz, themed (ITV soap operas) |
| I've Got a Secret | Panel game |
