| M.I. High | BBC One | crime television series, action television series, espionage television series, children's television series | 8 | 88 |
| Mad About Alice | BBC One | sitcom | 1 | 6 |
| Mad Dogs | Sky One | black comedy, psychological thriller | 4 | 14 |
| Mad for It | CITV | — | 2 | 39 |
| Mad Labs | National Geographic | documentary television program | — | 22 |
| Mad Mad World | — | panel game | 1 | 7 |
| Madabout | ITV | — | 2 | 26 |
| Madame Bovary | — | — | — | — |
| Maddigan's Quest | Three | post-apocalyptic television series | — | 13 |
| Made in Chelsea | E4 | scripted reality | 31 | 157 |
| Made in Chelsea: Croatia | — | reality television | 1 | 6 |
| Made in Chelsea: Ibiza | — | reality television | 1 | 6 |
| Made in Chelsea: LA | — | reality television | 1 | 6 |
| Made in Chelsea: NYC | — | reality television | 1 | 6 |
| Made in Chelsea: South of France | E4 | reality television | 1 | 6 |
| Madson | — | — | — | 6 |
| Maelstrom | BBC One | thriller television series, mystery television series, drama television series | — | 6 |
| Mafia's Greatest Hits | — | crime film | 1 | 13 |
| Maggie | — | — | — | — |
| Maggie and Her | ITV | sitcom | 2 | 14 |
| Magic Adventures of Mumfie | ITV | fantasy television program, children's television series | 3 | 79 |
| Magic Grandad | BBC Two | — | 6 | 21 |
| Magic Numbers | — | game show | 1 | 7 |
| Magpie | ITV | — | — | — |
| Magpie Murders | BBC One | — | 1 | 6 |
| Maid Marian and her Merry Men | BBC One | sitcom | 4 | 26 |
| Maigret | ITV | detective fiction, drama fiction | 2 | 4 |
| Maigret | British Broadcasting Corporation | drama television series, crime television series | 4 | 52 |
| Maigret | ITV | crime film | 2 | 12 |
| Maigret on Masterpiece | — | — | — | — |
| Maisie Raine | BBC One | detective fiction | 2 | 12 |
| Make Me a Supermodel | Channel 5 | reality television | 2 | 21 |
| Make Me an Egghead | BBC Two | — | 1 | 25 |
| Make Me Prime Minister | — | — | — | — |
| Make That Movie | Channel 4 | comedy film | 1 | 6 |
| Make Your Play | ITV1 | — | — | — |
| Making News | — | — | 1 | 6 |
| Making Out | BBC One | comedy drama | 3 | 24 |
| Making the Most of the Micro | BBC Two | — | — | 10 |
| Making Waves | ITV | drama television series | 1 | 6 |
| Making Your Mind Up | BBC One | — | — | — |
| Malcolm Vaughan | — | documentary film | 1 | 4 |
| Malice | — | — | — | — |
| Malice Aforethought | British Broadcasting Corporation | — | — | 4 |
| Malory Towers | CBBC | historical television series, drama television series | 5 | 64 |
| Malpractice | ITV | medical drama | 1 | 5 |
| Mamma Mia! I Have a Dream | — | — | — | 8 |
| Mammals | Amazon Prime Video | — | — | — |
| Mammoth | — | — | — | — |
| Man About the House | ITV | sitcom | 6 | 39 |
| Man Alive | BBC Two | documentary film | — | — |
| Man at the Top | ITV | — | — | — |
| Man Down | Channel 4 | sitcom | 4 | 26 |
| Man Like Mobeen | BBC Three | sitcom | 5 | 23 |
| Man O Man | ITV | game show | 2 | 23 |
| Man of the World | ITV | drama television series | 2 | 20 |
| Man Stroke Woman | BBC Three | comedy television series | 2 | 12 |
| Man to Man with Dean Learner | Channel 4 | talk show | — | 6 |
| Man v. Monster | Nat Geo Wild | — | 3 | 16 |
| Man vs. Baby | Netflix | comedy television series | 1 | 4 |
| Man vs. Bee | Netflix | comedy film | 1 | 9 |
| Man vs. Wild | Discovery Channel | reality television, nature program | 7 | 72 |
| Man's Work | — | — | — | — |
| Manchild | BBC Two | comedy television series | 2 | 15 |
| Mandela: The Struggle Is My Life | — | — | — | — |
| Manhunt | ITV | drama television series | 2 | 7 |
| Manhunt | ITV | — | 2 | 26 |
| Manhunt – Solving Britain's Crimes | — | — | — | — |
| Manhunt: Kill or Capture | — | crime film | 1 | 10 |
| Mann's Best Friends | — | — | — | — |
| Mansfield Park | BBC Two | drama television series | 1 | 6 |
| Map Man | — | documentary film | — | — |
| Mapp and Lucia | BBC One | — | 1 | 3 |
| Mapp and Lucia | Channel 4 | — | 2 | 10 |
| Marc | ITV1 | musical film | 1 | 6 |
| Marc Wootton Exposed | — | comedy television program | — | 6 |
| Marcella | ITV | drama television series, crime television series | 3 | 24 |
| Marie Antoinette | BBC Two | historical drama | 2 | 16 |
| Marion and Geoff | BBC Two | comedy television series | 2 | 17 |
| Marjorie and Men | — | — | — | — |
| Mark Kermode's Secrets of Cinema | — | — | — | 14 |
| Mark Lawson Talks to... | — | — | — | — |
| Mark Wright's Hollywood Nights | — | reality television | 1 | 5 |
| Marked Personal | ITV | — | 1 | 90 |
| Market in Honey Lane | ITV | soap opera | 1 | 91 |
| Market Kitchen | — | cooking show | 2 | 506 |
| Marlene Marlowe Investigates | BBC One | children's television series | 2 | 26 |
| Marley's Ghosts | — | — | 2 | 9 |
| Marmalade Atkins | ITV | — | 2 | 21 |
| Marooned with Ed Stafford | — | — | 3 | 12 |
| Marriage Lines | BBC One | sitcom | 5 | 44 |
| Married at First Sight | Channel 4 | reality television | — | — |
| Married for Life | ITV | sitcom | 1 | 7 |
| Married Single Other | ITV | comedy drama | 1 | 6 |
| Martin Chuzzlewit | BBC Two | — | 1 | 6 |
| Martin Chuzzlewit | — | — | — | — |
| Martin Shaw: Aviators | — | documentary television program | — | — |
| Marty | — | comedy television series | — | — |
| Marvo the Wonder Chicken | Jetix | — | — | — |
| Mary & George | Sky Atlantic | historical drama, psychological drama film | 1 | 7 |
| Mary Berry Cooks | BBC Two | cooking show | 1 | 6 |
| Mary Britten, M.D. | — | — | — | — |
| Mary Portas: Secret Shopper | Channel 4 | reality television | — | — |
| Mary Queen of Shops | BBC Two | documentary film, reality television | 3 | 16 |
| Maryland | — | — | — | — |
| Mash and Peas | Q1114052 | — | — | — |
| Massive | BBC Three | sitcom | 1 | 6 |
| Massive! | — | — | — | — |
| MasterChef | BBC One, BBC Two | cooking show | — | — |
| MasterChef | British Broadcasting Corporation | reality competition | — | — |
| Masterchef Turkey | Show TV | reality show | — | — |
| MasterChef: The Professionals | BBC Two | — | 10 | 161 |
| Mastermind | BBC One | game show | — | — |
| Masterpiece | — | game show | 1 | 40 |
| Masters and Servants | Channel 4 | — | — | — |
| Masters of Money | BBC Two | documentary film | 1 | 3 |
| Masterteam | — | game show | 3 | 135 |
| Match of the Day | BBC One | sports journalism | 51 | — |
| Match of the Day 2 | BBC Two, BBC One | — | — | — |
| Match of the Day Kickabout | CBBC | children's television series | — | — |
| Match of the Seventies | — | — | — | — |
| Matchpoint | — | game show | — | 32 |
| Material Girl | BBC One | comedy television series | 1 | 6 |
| Maternal | — | — | — | — |
| Maths-In-A-Box | — | — | 1 | 10 |
| Mathspy | — | — | 1 | 10 |
| Matilda and the Ramsay Bunch | BBC Children's and Education | — | 3 | 24 |
| Matt's Million | — | — | — | — |
| Max and Paddy's Road to Nowhere | Channel 4 | sitcom | 1 | 6 |
| May The Best House Win | — | game show | 5 | 131 |
| May to December | BBC One | sitcom | 6 | 39 |
| Maya | Channel 4 | — | — | — |
| Mayday | BBC One | — | 1 | 5 |
| Mayflies | — | — | — | — |
| Mayo | BBC One | detective fiction | 1 | 8 |
| McCallum | ITV | crime film | 2 | 9 |
| McCready and Daughter | BBC One | — | 1 | 6 |
| McDonald & Dodds | ITV | crime television series | 4 | 11 |
| McMafia | BBC One, AMC | crime film | 1 | 8 |
| Me and My Girl | ITV, London Weekend Television | sitcom | 6 | 52 |
| Me Too! | BBC Two | — | 2 | 52 |
| Me, You and Him | ITV | sitcom | 1 | 6 |
| Mechannibals | — | — | — | — |
| Medici: Masters of Florence | Rai 1 | historical drama | 3 | 24 |
| Meees | — | children's television series | — | — |
| Meerkat Manor | Animal Planet | documentary television program | 4 | 53 |
| Meet Peters & Lee | — | — | — | — |
| Meet Ricky Gervais | Channel 4 | talk show | 1 | 6 |
| Meet the Adebanjos | — | — | 3 | 50 |
| Meet the Ancestors | — | documentary film | — | — |
| Meet the Drug Lords: Inside the Real Narcos | Channel 4 | documentary television program | 1 | 3 |
| Meet the Izzards | BBC One | — | — | — |
| Meet the Khans: Big in Bolton | — | — | — | — |
| Meet the Magoons | — | sitcom | — | — |
| Meet the Parents | E4 | — | 2 | 12 |
| Meet the Richardsons | U&Dave | mockumentary | 2 | — |
| Meet the Romans with Mary Beard | — | documentary film | — | 3 |
| Meet the Russians | — | reality television | — | — |
| Meet the Ukippers | BBC Two | — | — | 1 |
| Meet the Wife | BBC One | sitcom | 5 | 39 |
| Megamaths | BBC Two | — | 7 | 40 |
| Mel and Sue | — | talk show | — | — |
| Mel Giedroyc: Unforgivable | U&Dave | panel game, comedy television program | 3 | 8 |
| Melissa | — | — | — | — |
| Melody | — | — | 2 | — |
| Melvin and Maureen's Music-a-grams | — | — | — | — |
| Melvyn Bragg on Class and Culture | BBC Two | documentary film | 1 | 3 |
| Memory Bank | Channel 5 | game show | — | — |
| Men and Money | BBC Two | — | — | 6 |
| Men Behaving Badly | ITV | sitcom | 6 | 42 |
| Men in Kilts: A Roadtrip with Sam and Graham | Starz | documentary television program | — | — |
| Men in White | — | — | — | — |
| Men of Ideas | British Broadcasting Corporation | philosophy, talk show | 1 | 15 |
| Men Of Rock | — | documentary television program | 1 | 3 |
| Men of the World | BBC One | sitcom | 2 | 12 |
| Merlin | BBC One | fantasy television series, adventure television series, drama television series | 5 | 65 |
| Merlin: Secrets and Magic | BBC Three | — | 1 | 14 |
| Merseybeat | BBC One | drama television series | 4 | 38 |
| Mess Mates | — | — | — | — |
| Messiah | British Broadcasting Corporation | drama television series | 5 | 10 |
| Messiah | — | — | — | — |
| Messy Goes to Okido | CBeebies | — | 1 | 52 |
| Metal Mickey | ITV | sitcom, science fiction television series | — | — |
| Metropolis | ITV | thriller television series | 1 | 8 |
| Metrosexuality | Channel 4 | comedy drama, LGBT-related television series | 1 | 6 |
| Miami 7 | BBC Children's and Education | comedy television series | 1 | 13 |
| Mic and Mack | — | sitcom, children's television series | — | — |
| Micawber | — | drama television series | — | — |
| Michael Ball | ITV | — | 2 | 13 |
| Michael Bentine's Potty Time | — | — | — | — |
| Michael Jackson: The Trial | — | — | — | — |
| Michael McIntyre's Big Show | BBC One | — | — | — |
| Michael McIntyre's Comedy Roadshow | BBC One | comedy television series | 2 | 13 |
| Michael Moore Live | — | — | — | — |
| Michael Palin in Nigeria | — | — | — | 3 |
| Michael Palin in North Korea | — | — | — | — |
| Michael Palin's Hemingway Adventure | British Broadcasting Corporation | documentary film | 1 | 4 |
| Michael Palin's New Europe | British Broadcasting Corporation | travel documentary | 1 | 7 |
| Michael Palin: Into Iraq | — | — | — | 3 |
| Mickey Dunne | — | — | — | — |
| Micro Live | BBC Two | — | — | — |
| Microbes and Men | — | — | 1 | 6 |
| Microsoap | British Broadcasting Corporation | children's television series, sitcom | 4 | 26 |
| Mid Morning Matters with Alan Partridge | — | sitcom | 2 | 12 |
| Middle Classes: Their Rise and Sprawl | BBC Two | — | 1 | 6 |
| Midnight Man | — | thriller television series | — | 3 |
| Midsomer Murders | ITV | detective television series, drama television series, mystery television series | 26 | 148 |
| Midwinter of the Spirit | — | — | 1 | 3 |
| Mighty Moshin' Emo Rangers | MTV | — | 2 | 9 |
| Mighty Truck of Stuff | CBBC | — | 2 | 6 |
| Mike and Angelo | ITV | science fiction television series | 12 | 123 |
| Mike Bassett: Manager | ITV | sitcom | 1 | 6 |
| Mike Brewer's World of Cars | Discovery Channel | reality television | — | — |
| Mile High | — | soap opera | 2 | 39 |
| Mill of Secrets | — | drama television series | — | — |
| Millie Inbetween | CBBC | — | 3 | 26 |
| Millie Inbetween: Access All Areas | BBC Children's and Education | — | — | — |
| Million 2 One | — | — | 1 | 10 |
| Million Dollar Traders | BBC Two | reality television | 1 | 3 |
| Million Pound Property Experiment | — | — | — | — |
| Millionaires Mansions | — | — | — | — |
| Mind Your Language | ITV | sitcom | 4 | 42 |
| Mind, Body & Kick Ass Moves | BBC Three | documentary film | 1 | 10 |
| Minder | ITV | drama television series | 10 | 108 |
| Minipops | Channel 4 | — | 1 | 6 |
| Miracles Take Longer | — | — | 1 | 36 |
| Miranda | BBC Two | sitcom | 3 | 20 |
| Misbehaving Mums To Be | — | — | — | 7 |
| Misfits | E4 | science fiction television series, drama television series, comedy drama, coming-of-age television program, raunchy comedy television program | 5 | 37 |
| Miss Austen | BBC One, PBS | period drama film, historical drama | 1 | 4 |
| Miss Jones and Son | ITV | sitcom | 2 | 12 |
| Miss Marie Lloyd: Queen of the Music Hall | — | — | — | — |
| Miss Marple | BBC One, British Broadcasting Corporation | detective television series | 1 | 12 |
| Miss Morison's Ghosts | — | — | — | — |
| Miss Naked Beauty | — | reality television | 1 | 6 |
| Miss Scarlet | Alibi, PBS | crime television series, historical drama, mystery television series | 6 | 36 |
| Miss Spider's Sunny Patch Friends | Cartoon Network, Nickelodeon | children's television series | 3 | 65 |
| Missing | BBC One | factual television program | 8 | 24 |
| Missing | BBC One | crime film | 2 | 15 |
| Missing | — | — | 1 | 2 |
| Missing You | Netflix | thriller television series | 1 | 5 |
| Mission Africa | BBC One | reality television | 1 | 12 |
| Mission Selfie | — | — | — | — |
| Mission: 2110 | BBC Children's and Education | — | 2 | 26 |
| Mister Charlesworth | — | — | — | — |
| Mister Maker | CBeebies | children's television series | 3 | 60 |
| Mister Maker Around the World | CBeebies | — | — | — |
| Mister Maker Comes to Town | CBeebies | children's television series | 2 | 51 |
| Mistresses | BBC One | drama television series, LGBT-related television series | 3 | 16 |
| Mitchell and Webb Are Not Helping | Channel 4 | — | 1 | 6 |
| Mixed Bill | — | — | — | — |
| Mixed Blessings | ITV | sitcom | 3 | 22 |
| Mixmasters | — | — | — | — |
| Mobil 1 The Grid | Channel 4 | — | 5 | 194 |
| Mobile | — | drama television series | 1 | 3 |
| Mock the Week | BBC Two, TLC | panel game, comedy television series | 15 | 181 |
| Model Behaviour | Channel 4 | reality television | 2 | — |
| Modern Times | — | — | — | — |
| Modern Toss | Channel 4 | — | 2 | 12 |
| Mog | ITV | sitcom | 2 | 13 |
| Mole Sisters | — | — | — | — |
| Moley | — | — | — | — |
| Moll Flanders | — | — | — | — |
| Molly and Mack | CBeebies | children's television series | — | — |
| Monarch of the Glen | BBC One | drama television series | 7 | 64 |
| Monarchy | Channel 4 | — | — | 17 |
| Monarchy: The Royal Family at Work | BBC One | documentary film | — | 5 |
| Monday Monday | — | drama television series | 1 | 7 |
| Mondo Macabro | — | — | — | — |
| Money | — | — | — | — |
| Money For Nothing | BBC One | — | — | — |
| Money Pit | — | — | — | — |
| Moneybags | — | — | — | — |
| Moneyball | ITV | game show | 2 | 14 |
| Mongrel Nation | — | — | — | — |
| Mongrels | BBC Three, British Broadcasting Corporation | sitcom | 2 | 17 |
| Monitor | — | documentary film | — | — |
| Monkey Business | — | — | — | — |
| Monkey Dust | BBC Three | satire, comedy television series | 3 | 18 |
| Monkey Life | Channel 5 | — | 9 | 134 |
| Monkey Magic | Channel 5 | — | 2 | 16 |
| Monkey Planet | — | nature documentary | 1 | 3 |
| Monkey Trousers | ITV1 | comedy television series | 1 | 5 |
| Monkman & Seagull's Genius Guide to Britain | BBC Two | — | 1 | 4 |
| Monkman & Seagull’s Genius Adventures | BBC Two | — | 1 | 4 |
| Monsignor Renard | ITV | — | 1 | 4 |
| Monster Café | British Broadcasting Corporation | — | 2 | 30 |
| Monster Moves | — | — | 6 | 31 |
| Monster Munchies | — | cooking show | 2 | 20 |
| Monster TV | BBC Two | — | — | — |
| Monsters We Met | Animal Planet | documentary film | 1 | 3 |
| Monty Don's French Gardens | BBC Two, BBC HD | — | 1 | 3 |
| Monty Don's Italian Gardens | BBC Two, BBC HD | documentary television program | 1 | 4 |
| Monty Don's Japanese Gardens | BBC Two | — | — | — |
| Monty Halls' Great Escape | — | — | — | — |
| Monty Python's Flying Circus | BBC One, BBC Two | comedy television series | 4 | 45 |
| Mood | BBC Three | — | 1 | 6 |
| Moody and Pegg | — | sitcom | 2 | 12 |
| Moon and Me | CBeebies | — | 1 | 50 |
| Moon and Son | BBC One | — | — | 13 |
| Moon Movies | — | — | — | — |
| Moonacre | — | mystery television series, family television series, mystery film, family film | — | — |
| Moonbase 3 | British Broadcasting Corporation | science fiction television series | 1 | 6 |
| Moondial | BBC One | — | 1 | 6 |
| Moone Boy | Sky One | sitcom | 3 | 18 |
| Moonfleet | — | — | — | — |
| Moonfleet | — | — | — | — |
| Moonflower Murders | BBC One | — | — | — |
| Moonlight on the Highway | ITV | — | — | — |
| Moonstrike | — | anthology series | 1 | 27 |
| Mop and Smiff | BBC One | — | 1 | 13 |
| Mopatop's Shop | ITV | children's television series | 4 | 260 |
| More Than Robbery | — | — | — | — |
| More4 News | More4 | — | — | — |
| Morgana Robinson's The Agency | BBC Two | — | 1 | 7 |
| Morning Call | Q1023911, CNBC | business, news program | — | — |
| Morning Exchange | Q1023911 | — | — | — |
| Morning Live | BBC One | — | — | — |
| Mortimer & Whitehouse: Gone Fishing | BBC Two | factual television program | 5 | 32 |
| Mortimer and Arabel | — | children's television series | 2 | 36 |
| Mortimer's Law | — | — | — | 6 |
| Moses | BBC One | documentary film | 1 | 1 |
| Moses Jones | BBC Two | — | 1 | 3 |
| Most Annoying People | BBC Three | — | 6 | 12 |
| Most Evil Killers | — | — | — | — |
| Most Haunted | Sky Witness | — | 18 | 207 |
| Most Haunted Live! | — | — | — | — |
| Most Haunted: Midsummer Murders | — | — | 1 | 7 |
| Mother and Baby | — | — | — | — |
| Mother Love | BBC One | — | 1 | 4 |
| MotherFatherSon | BBC Two | drama television series | 1 | 8 |
| Motherland | — | — | — | — |
| Motive for Murder | — | drama television series | — | — |
| Motormouth | ITV | children's television series | 4 | 150 |
| Motorway Cops | BBC One | reality television | 7 | 33 |
| Mount Pleasant | — | comedy drama | 6 | 42 |
| Mountain | BBC One | documentary film | — | 5 |
| Mountain Gorilla | — | nature documentary | — | — |
| Mouse and Mole | BBC Children's and Education | — | 1 | 19 |
| Mouth to Mouth | BBC Three | comedy drama | 1 | 6 |
| Movie Connections | BBC One | documentary film | — | 16 |
| Movie Lounge | — | — | — | — |
| Moviedrome | BBC Two | — | 13 | 207 |
| Movies, Games and Videos | ITV | — | 10 | — |
| Moviewatch | Channel 4 | — | — | — |
| Moving | ITV | sitcom | 1 | 6 |
| Moving On | BBC One | drama television series | 12 | 65 |
| Moving Pictures | — | — | — | — |
| Moving Story | — | — | — | 13 |
| Moving Wallpaper | — | comedy drama | 2 | 18 |
| Mr Bates vs The Post Office | ITV | docudrama | — | 4 |
| Mr Bloom's Nursery | CBeebies | children's television series | — | — |
| Mr Don & Mr George | — | sitcom | — | — |
| Mr Drew's School for Boys | — | — | — | — |
| Mr Justice Duncannon | BBC One | sitcom | 1 | 6 |
| Mr Loverman | BBC One | LGBT-related television series | — | — |
| Mr Majeika | Television South | — | — | 19 |
| Mr Moon | — | — | — | — |
| Mr Selfridge | ITV | drama television series, drama film | 4 | 40 |
| Mr. and Mrs. | ITV | game show | — | — |
| Mr. Bean | ITV | sitcom, physical comedy, family film, comedy film | 6 | 14 |
| Mr. Big | — | — | — | — |
| Mr. Bigstuff | — | — | — | — |
| Mr. Crabtree Goes Fishing | — | — | — | — |
| Mr. Digby Darling | — | — | — | — |
| Mr. Men and Little Miss | ITV | animation | 3 | 104 |
| Mr. Palfrey of Westminster | ITV | drama television series | 2 | 10 |
| Mr. Pastry's Progress | — | — | — | — |
| Mr. Sloane | Sky Atlantic | comedy | 1 | 6 |
| Mrs Biggs | ITV | drama television series | 1 | 5 |
| Mrs Merton and Malcolm | BBC One | sitcom | 1 | 6 |
| Mrs Sidhu Investigates | Acorn TV | — | 1 | 4 |
| Mrs Thursday | — | — | — | — |
| Mrs Wilson | BBC One | drama | 1 | 3 |
| Mrs. Brown's Boys | RTÉ One | sitcom, LGBT-related television series | 3 | 41 |
| MTV's Greatest Hits | — | — | — | — |
| MTV's Most Wanted | — | — | — | — |
| Mud Men | — | — | — | 30 |
| Mud, Sweat and Tears: Premiership Rugby | Amazon Prime Video | — | 1 | 2 |
| Mulberry | BBC One | sitcom | 2 | 13 |
| Multi-Coloured Swap Shop | BBC One | — | 6 | 146 |
| Mum's on Strike | ITV | — | — | — |
| Murdaich | BBC Scotland | children's television | — | — |
| Murder | BBC Two | — | 1 | 4 |
| Murder | British Broadcasting Corporation | — | — | 4 |
| Murder 24/7 | BBC Two | true crime, documentary television program | — | — |
| Murder Before Evensong | Acorn TV, Channel 5 | crime television series | 1 | 6 |
| Murder City | ITV | drama television series | 2 | 10 |
| Murder Files | Channel 5 | — | 1 | 4 |
| Murder in Eden | BBC One | — | 1 | 3 |
| Murder in Mind | BBC One | anthology series, drama television series | 3 | 23 |
| Murder in Provence | — | — | — | — |
| Murder in Suburbia | ITV | drama television series | 2 | 12 |
| Murder in Successville | BBC Three | — | 3 | 18 |
| Murder Investigation Team | ITV | drama television series | 2 | 12 |
| Murder Is Easy | — | mystery fiction, thriller | 1 | 2 |
| Murder Maps | — | docudrama | — | — |
| Murder Most Horrid | BBC Two | anthology series, comedy television series | 4 | 24 |
| Murder Prevention | Channel 5 | drama television series | 1 | 6 |
| Murder Rooms: Mysteries of the Real Sherlock Holmes | BBC Two | detective fiction, drama television series | 1 | 6 |
| Murder Squad | — | documentary television program | 3 | 12 |
| Murder, Mystery, and My Family | — | — | — | — |
| Murder, They Hope | Gold | whodunit, comedy drama, detective fiction | 2 | 6 |
| Murder: First on Scene | CBS Reality | — | — | 10 |
| Murdered by My Boyfriend | BBC Three | — | — | 1 |
| Murderland | ITV1 | drama television series | 1 | 3 |
| Murphy's Law | BBC One | — | 5 | 23 |
| Murphy's Mob | ITV | — | — | 54 |
| Murun Buchstansangur | Channel 4 | — | — | 52 |
| Museum | — | documentary film | — | — |
| Museum of Life | BBC Two | nature documentary | — | 6 |
| Music Room | — | — | 1 | 8 |
| Music Time | — | — | — | — |
| Muslim in Trump's America | — | — | — | — |
| Muslims Like Us | — | — | — | — |
| Mutual Friends | BBC One | comedy drama | 1 | 6 |
| My Almost Famous Family | — | — | 1 | 11 |
| My Brother's Keeper | — | — | — | — |
| My Cousin Rachel | — | — | — | — |
| My Family | BBC One | sitcom | 11 | 120 |
| My Family & Other Turkeys with Nigel Marven | Channel 5 | — | — | — |
| My Family and Other Animals | — | — | — | — |
| My Famous Family | — | — | — | — |
| My Funniest Year | Channel 4 | comedy television series | 1 | 4 |
| My Good Friend | ITV | sitcom | 2 | 14 |
| My Grandparents' War | — | — | — | — |
| My Hero | BBC One | sitcom, science fiction television series | 6 | 51 |
| My High School Musical | — | — | — | — |
| My Honourable Mrs | — | — | — | — |
| My Husband and I | ITV | sitcom | 1 | 7 |
| My Kind of Music | ITV | game show | 5 | 50 |
| My Kind of People | ITV | — | 1 | 10 |
| My Kitchen Rules | — | — | — | 80 |
| My Lady Jane | Amazon Prime Video | — | 1 | 8 |
| My Life as a Popat | ITV | comedy television series | 2 | 14 |
| My Life as an Animal | BBC Three | reality television | 1 | 4 |
| My Life in Film | BBC Three | comedy television series | 1 | 6 |
| My Mad Fat Diary | E4 | comedy drama | 3 | 16 |
| My Mother and Other Strangers | — | — | — | 5 |
| My Mum Tracy Beaker | — | children's television series | — | — |
| My Mum, Your Dad | — | — | — | — |
| My Name Is Harry Worth | ITV | sitcom | 1 | 8 |
| My New Best Friend | Channel 4 | reality television | 1 | 6 |
| My Pal Bob | BBC One | — | 2 | 10 |
| My Parents Are Aliens | ITV | sitcom, children's television series | 8 | 105 |
| My Pet and Me | — | — | — | — |
| My Phone Genie | ITV | fantasy television program | — | 26 |
| My Shocking Story | — | documentary television program | — | — |
| My Sister and I | — | sitcom | — | — |
| My Son Reuben | ITV | sitcom | 1 | 6 |
| My Son, My Son | — | — | — | — |
| My Spy Family | Boomerang, Cartoon Network, Adult Swim | action television series, comedy television series, family television series, teen sitcom, sitcom | 3 | 46 |
| My Transsexual Summer | Channel 4 | documentary television program, reality television series, LGBT-related television series | 1 | 4 |
| My Uncle Silas | — | — | — | — |
| My Wife and I | — | — | — | — |
| My Wife Next Door | BBC One | sitcom | 1 | 13 |
| My Wonderful Life | — | — | — | — |
| Mysteries Of The Deep | Discovery Channel | — | 1 | 10 |
| Mystery and Imagination | ITV | anthology series, horror television series | 5 | 24 |
| Mystery Files | — | — | — | — |
| Mystery Manhunt | — | — | — | — |
| Mystic | — | — | — | — |
| Mystic Challenge | — | game show | 1 | — |
| Myths & Monsters | — | — | — | — |
| Métal Hurlant Chronicles | France 4, Sony Pictures Television | science fiction television series | 2 | 12 |