January

• 1 January – The Channel Four Television Company is established in preparation for the launch of Channel 4.^[1]
• 5 January
  • Debut of the BBC1 soap Triangle,^[2] a twice-weekly series set aboard a North Sea ferry and filmed on location using outside broadcast cameras.^[3] The website TVARK describes the programme as being chiefly remembered as "some of the most mockable British television ever produced" owing to its clichéd storylines and stilted dialogue as well as being notable for its troubled production. It is axed after three series in 1983.^[4]
  • The Hitchhiker's Guide to the Galaxy, the television version of Douglas Adams' radio comedy of the same name makes its debut on BBC2.^[5]
• 20 January – BBC2 airs live coverage of the inauguration of Ronald Reagan as the 40th President of the United States.^[6]
• 22 January – The US sitcom Benson makes its UK debut on ITV.

February

• 5 February – BBC1 begin showing the American cartoon series Scooby-Doo and Scrappy-Doo.
• 10 February – Alan Rogers' cutout animation series Pigeon Street makes its debut on BBC1.^[7] The series runs until December before repeats on BBC1 and BBC2 throughout the 1980s and 1990s.
• 13 February – Arthur Marshall makes his debut on the BBC2 game show Call My Bluff after the death of Patrick Campbell the previous November.
• 27 February – ITV shows the pilot episode of Magnum P.I. starring Tom Selleck; the first series does not commence until 23 May.

March

• 12 March – Debut of the sitcom Sorry on BBC1, starring Ronnie Corbett.
• 21 March – After an unprecedented seven years starring in Doctor Who, Tom Baker makes his final appearance as the Fourth Doctor in Part 4 of Logopolis. Peter Davison makes his first appearance as the Fifth Doctor at the conclusion of that story.
• 29 March – BBC1 airs highlights of the first London Marathon under the International Athletics strand.^[8] Live coverage of the event begins the following year.^[9]
• March – TV-am purchases a former car showroom in Camden as its headquarters. The building is subsequently renovated to create the Breakfast Television Centre.^[10]

April

• 4 April – The UK wins the Eurovision Song Contest with the song Making Your Mind Up by Bucks Fizz.
• 30 April – The long-running science-fiction series Doctor Who starts airing in Sri Lanka with the first part of the seventh series Spearhead from Space which is broadcast on the Independent Television Network.

May

• 17 May – Sunday Grandstand launches. It airs during the summer months on BBC Two.^[11]

June

• 2 June – The music series Razzamatazz makes its debut on ITV; it will run for 6 years.

July

• 27 July – In a specially timed event by the show's production team, Ken Barlow marries Deirdre Langton on Coronation Street just two days before the real-life wedding of Prince Charles and Lady Diana Spencer. The wedding of Ken and Deirdre is watched by over 24 million viewers in Britain.
• 29 July
  • The marriage of the Prince of Wales (later Charles III) and Lady Diana Spencer takes place at St Paul's Cathedral. More than 30,000,000 viewers watch the wedding on television, the second highest television audience of all time in Britain.^[12]
  • ITV show the network television premiere of the 1977 disco-set drama Saturday Night Fever, starring John Travolta. This is the edited for television version which removes all profanity and adult themes from the original version of the film.
• 27 July – ITV begins showing Storybook International, featuring children's folk tales and fairy stories from around the world.

August

• 1 August – This week's issue of the Radio Times is not published due to a printing dispute.
• 11 August – TSW takes over Westward Television but continues to use the Westward name until 1 January 1982.
• 27 August – Moira Stuart, aged 31, is appointed as the BBC's first black newsreader.
• 31 August – The network television premiere of Richard Donner's 1975 supernatural horror film The Omen on ITV, starring Gregory Peck and Lee Remick. The following morning, newspapers report numerous complaints of viewers being horrified after the showing of the movie.^[13]
• August – Southern sells its studios to TVS but continues to use them until its franchise runs out at the end of the year.

September

• 4 September – ITV broadcasts the feature-length pilot episode of The Amazing Spider-Man, starring Nicholas Hammond.
• 5 September – The BBC1 Mirror globe changes its colour from yellow on blue to green on blue.
• 7 September
  • News After Noon is launched as a 30-minute lunchtime news programme, replacing the much shorter Midday News.^[14]
  • BBC1 airs a two-part adaptation of the Stephen King vampire novel Salem's Lot, starring David Soul and James Mason. Part 2 is shown on 9 September.
• 8 September – BBC1 airs the first episode of the long-running and iconic sitcom Only Fools and Horses starring David Jason and Nicholas Lyndhurst.^[15]
• 9 September – Rediffusion launches a movie channel called Starview.^[16] It is allowed to launch the channel following a decision by the Home Office granting several experimental licences to broadcast subscription television and Rediffusion has won one of these licenses.
• 10 September – BBC1 broadcasts the science-fiction drama series The Day of the Triffids, based on the 1951 novel by John Wyndham.
• 16 September – Postman Pat, the children's stop motion series about a rural postman with a black and white cat written and created by John Cunliffe and voiced and narrated by Ken Barrie, makes its debut on BBC1. Episode 8 introduces a more authentic look to the Royal Mail and Post Office Ltd logos and more storybooks are produced after 13 episodes being broadcast on BBC1 and BBC2 which makes the series more popular than expected to be, starting from Christmas 1981 along with Pigeon Street.
• 22 September - BBC1 begin showing the 10-part supernatural drama Dark Towers, produced for the children's educational Look and Read series.
• 26 September – ITV launch the practical joke themed series Game for a Laugh, featuring Jeremy Beadle, Matthew Kelly, Sarah Kennedy and Henry Kelly.
• 28 September
  • ITV broadcasts the first episode of Cosgrove Hall Films' children's animated series, Danger Mouse, with the lead character voiced by David Jason.
  • Debut of the darts-based game show Bullseye on ITV, presented by Jim Bowen.

October

• 3 October – TVTimes is rebranded as TVTimes Magazine, the premise for the change of name being that it now contains more than television listings.
• 8 October – ITV airs the network television premiere of Steven Spielberg's 1975 blockbuster thriller Jaws, starring Roy Scheider, Robert Shaw and Richard Dreyfuss. The film is watched by an estimated 23 million viewers, making it the most watched film of the year.
• 11 October – See Hear is launched on BBC1, initially as a series of 20 programmes. Broadcast with open subtitles It is presented in sign, thereby becoming the first regular television programme for deaf and hard-of-hearing people in the United Kingdom.^[17]
• 12 October – Brideshead Revisited, a television adaptation of Evelyn Waugh's novel of the same name, makes its debut on ITV.
• 18 October
  • BBC1 starts to air season 5 of the US drama series Dallas.
  • Debut of the long-running Jersey-set crime drama Bergerac on BBC1, starring John Nettles.
• 23 October – The last ever teatime block of Open University programmes is transmitted on BBC2 today. From the 1982 season, only a single Open University programme is aired, at 5:10pm ahead of the start of BBC2's evening programmes.
• October – Scottish Television becomes the first ITV station to operate a regional ORACLE teletext service, containing over 60 pages of local news, sport and information.^[18]

November

• November – BBC2 starts its weekdays at the earlier time of 3:55pm.
• 2 November – The TV licence increases in price from £34 to £46 for a colour TV and £12 to £15 for black and white.
• 12 November – Noele Gordon, eight times winner of the TVTimes award for best actress, leaves Crossroads after playing Meg Richardson since the series began in 1964, having been sacked from the show.

December

• December – The BBC's Open University broadcasts begin using computer generated clocks.
• 11 December – Most ITV regions screen the 1971 Steven Spielberg cult action-thriller Duel (apart from London and Central who don't show the film until 23 Dec 1982 and 9 July 1983 respectively).
• 21 December - Final episode of the Cult Sci-Fi series Blake's Seven on BBC1
• 24 December
  • ITV network premiere of the 1970 musical version of Charles Dicken's Scrooge, starring Albert Finney and Alec Guinness.
  • BBC1 launch The Kenny Everett Television Show, following Everett's departure from ITV.
• 25 December – Christmas Day network television premiere of 1979's The Muppet Movie on ITV.
• 26 December – The British television premiere of the classic 1939 American Civil War movie Gone with the Wind on BBC1.
• 29 December – Pipkins is broadcast for the final time.
• 31 December – The final day on air for the ITV regional stations ATV, Southern and Westward.

Unknown

• Radio Rental Cable Television launches the UK's first pay-per-view movie channel 'Cinematel' for cable viewers in Swindon. The channel later expands to Chatham, Kent. As well as showing movies, the channel also broadcasts some local programming, including one-off documentaries and a live news-magazine programme called Scene in Swindon launches. Also provided is a local teletext service with pages about film information, horoscopes, recipes, local bus times and job vacancies.

BBC1

• 4 January – The Swiss Family Robinson: Flone of the Mysterious Island (1981)
• 5 January – Triangle (1981–1983)
• 6 January – Seconds Out (1981–1982)
• 10 January – Nanny (1981–1983)
• 11 January – Solo (1981–1982)
• 15 January – The Treachery Game (1981)
• 23 January – The Walls of Jericho (1981)
• 29 January – Partners (1981)
• 1 February – Sense and Sensibility (1981)
• 5 February – Scooby-Doo and Scrappy-Doo (1979-1982)
• 10 February – Pigeon Street (1981)
• 11 February – Break in the Sun (1981)
• 20 February – Finders Keepers (1981–1985)
• 4 March – The Life and Times of David Lloyd George (1981)
• 12 March – Sorry! (1981–1982, 1985–1988)
• 25 March – The Bagthorpe Saga (1981)
• 2 April – A Spy at Evening (1981)
• 30 April – The Chinese Detective (1981–1982)
• 1 May – The Nightmare Man (1981)
• 1 July
  • The Olympian Way (1981)
  • Three of a Kind (1981–1983)
• 10 July – A Chance to Sit Down (1981)
• 25 July – Summertime Special (1981-1982)
• 7 August – The Rose Medallion (1981)
• 7 September
  • Salem's Lot (1979)
  • Blood Money (1981)
  • News After Noon (1981–1986)
• 8 September – Only Fools and Horses (1981–1983, 1985–1993, 1996, 2001–2003, 2014)
• 10 September – The Day of the Triffids (1981)
• 14 September – Willo the Wisp (1981, 2005)
• 16 September – Postman Pat (1981–1982, 1990; 1997, 2004–2008)
• 24 September – Fanny by Gaslight (1981)
• 4 October – Great Expectations (1981)
• 11 October – See Hear (1981–present)
• 18 October – Bergerac (1981–1991)
• 22 October – Tenko (1981–1985)
• 11 November – Wilfred and Eileen (1981)
• 13 November – Kessler (1981)
• 8 December – Codename Icarus (1981)
• 16 December – Present Laughter (1981)
• 24 December – The Kenny Everett Television Show (1981–1988)
• 29 December
  • Artemis 81 (1981)
  • John Diamond (1981)

BBC2

• 4 January – The History Man (1981)
• 5 January – The Hitchhiker's Guide to the Galaxy (1981)
• 8 January – The Little World of Don Camillo (1981)
• 14 January – Sons and Lovers (1981)
• 17 February – Maggie (1981–1982)
• 5 April – Bread or Blood (1981)
• 6 May – Private Schulz (1981)
• 9 May – Maybury (1981–1983)
• 17 May – Sunday Grandstand (1981–2007)
• 21 May - Chock-A-Block (1981)
• 21 September – A Kick Up the Eighties (1981–1984)
• 22 September - Look and Read: Dark Towers (1981)
• 24 September – Roger Doesn't Live Here Anymore (1981)
• 29 September – Timewatch (1981–present)
• 1 October – World's End (1981)
• 2 October – Prisoners of Conscience (1981)
• 14 October – The Borgias (1981)
• 3 November – The Last Song (1981–1983)

ITV

• 1 January – Wood and Walters (1981–1982)
• 3 January – Punchlines (1981–1984)
• 4 January
  • Barriers (1981–1982)
  • Dangerous Davies: The Last Detective (1981)
• 6 January – The Ballyskillen Opera House (1981)
• 9 January – The Gaffer (1981–1983)
• 13 January – Wolcott (1981)
• 17 February – A Sense of Freedom (1981)
• 18 January – Sunday Night Thriller (1981)
• 20 January – Cover (1981)
• 21 January – Honky Tonk Heroes (1981)
• 22 January – Benson (1979–1986)
• 23 January – Second Chance (1981)
• 10 February – Bognor (1981–1982)
• 16 February – West End Tales (1981)
• 19 February – The Incredible Mr Tanner (1981)
• 22 February – Doctors' Daughters (1981)
• 27 February – Magnum, P.I. (1980–1988)
• 6 March – My Father's House (1981)
• 8 March – Seven Dials Mystery (1981)
• 31 March – Plays for Pleasure (1981)
• 1 April – Echoes of Louisa (1981)
• 5 April – The Smuggler (1981)
• 9 April – Get Up and Go! (1981–1983)
• 15 April – The Good Soldier (1981)
• 23 April – Funny Man (1981)
• 27 April – Chintz (1981)
• 28 April – Thicker Than Water (1981)
• 13 May – Into the Labyrinth (1981–1982)
• 22 May – Till Death... (1981)
• 2 June – Razzamatazz (1981–1987)
• 3 June – Have I Got You... Where You Want Me? (1981)
• 5 June – Misfits (1981)
• 12 June – Get Lost! (1981)
• 15 June – Sorry I'm a Stranger Here Myself (1981–1982)
• 22 June – Scarf Jack (1981)
• 4 July – The House on the Hill (1981)
• 24 July – That Beryl Marston...! (1981)
• 31 July – Storybook International (1981-1986)
• 23 August – Miss Morison's Ghosts (1981)
• 24 August – The Member for Chelsea (1981)
• 29 August – Stay with Me Till Morning (1981)
• 1 September
  • The Flame Trees of Thika (1981)
  • Frankie Howerd Strikes Again (1981)
• 2 September – The Paul Squire Show (1981)
• 4 September – Kinvig (1981)
• 5 September – Take a Letter, Mr. Jones (1981)
• 6 September – Winston Churchill: The Wilderness Years (1981)
• 7 September – Never the Twain (1981–1991)
• 9 September – Diamonds (1981)
• 11 September – Roots: The Next Generations (1979)
• 24 September – Taff Acre (1981)
• 26 September – Game for a Laugh (1981–1985)
• 28 September
  • Bullseye (1981–1995, 2006)
  • Danger Mouse (1981–1992, 2015–2019)
  • Stig of the Dump (1981)
• 29 September
  • Rod, Jane and Freddy (1981–1991)
  • Vice Versa (1981)
• 12 October – Brideshead Revisited (1981)
• 13 October – Going Out (1981)
• 17 October – The Stanley Baxter Series (1981)
• 23 October – That's My Boy (1981–1986)
• 26 October – Astronauts (1981–1983)
• 27 October – It Takes a Worried Man (1981–1983)
• 1 November
  • Dear Enemy (1981)
  • A Fine Romance (1981–1984)
• 2 November
  • Marmalade Atkins (1981–1984)
  • Theatre Box (1981)
• 8 December – Freetime (1981–1985)
• 13 December – Celebrity Playhouse (1981)
• Unknown – Scooby-Doo and Scrappy-Doo (1980–1982)

New channels

Returning this year after a break of one year or longer

• 1 March – Open All Hours (BBC2 1976, BBC1 1981–1982, 1985, 2013–present)
• 9 April – Are You Being Served? (BBC1 1972, 1973–1979, 1981, 1983, 1985)

1920s

• BBC Wimbledon (1927–1939, 1946–2019, 2021–present)

1930s

• The Boat Race (1938–1939, 1946–2019)
• BBC Cricket (1939, 1946–1999, 2020–2024)

1940s

• Come Dancing (1949–1998)

1950s

• The Good Old Days (1953–1983)
• Panorama (1953–present)
• Crackerjack (1955–1984, 2020–present)
• What the Papers Say (1956–2008)^[19]
• The Sky at Night (1957–present)
• Blue Peter (1958–present)
• Grandstand (1958–2007)

1960s

• Coronation Street (1960–present)
• Songs of Praise (1961–present)
• Animal Magic (1962–1983)
• Doctor Who (1963–1989, 1996, 2005–present)
• World in Action (1963–1998)
• Top of the Pops (1964–2006)
• Match of the Day (1964–present)
• Crossroads (1964–1988, 2001–2003)
• Play School (1964–1988)
• Mr. and Mrs. (1965–1999)
• World of Sport (1965–1985)
• Jackanory (1965–1996, 2006)
• Sportsnight (1965–1997)
• Call My Bluff (1965–2005)
• It's a Knockout (1966–1982, 1999–2001)
• The Money Programme (1966–2010)
• ITV Playhouse (1967–1982)
• The Big Match (1968–2002)
• Nationwide (1969–1983)
• Screen Test (1969–1984)

1970s

• The Goodies (1970–1982)
• The Old Grey Whistle Test (1971–1987)
• The Two Ronnies (1971–1987, 1991, 1996, 2005)
• Clapperboard (1972–1982)
• Crown Court (1972–1984)
• Pebble Mill at One (1972–1986)
• Rainbow (1972–1992, 1994–1997)
• Emmerdale (1972–present)
• Newsround (1972–present)
• Weekend World (1972–1988)
• We Are the Champions (1973–1987)
• Last of the Summer Wine (1973–2010)
• That's Life! (1973–1994)
• Tiswas (1974–1982)
• Wish You Were Here...? (1974–2003)
• Arena (1975–present)
• Jim'll Fix It (1975–1994)
• Multi-Coloured Swap Shop (1976–1982)
• Rentaghost (1976–1984)
• One Man and His Dog (1976–present)
• The Professionals (1977–1983)
• Ski Sunday (1978–present)
• Strangers (1978–1982)
• Butterflies (1978–1983, 2000)
• 3-2-1 (1978–1988)
• Grange Hill (1978–2008)
• Dick Turpin (1979–1982)
• Friday Night, Saturday Morning (1979–1982)
• Not the Nine O'Clock News (1979–1982)
• Only When I Laugh (1979–1982)
• Sapphire & Steel (1979–1982)
• Terry and June (1979–1987)
• The Book Tower (1979–1989)
• Blankety Blank (1979–1990, 1997–2002)
• The Paul Daniels Magic Show (1979–1994)
• Antiques Roadshow (1979–present)
• Question Time (1979–present)

1980s

• Play Your Cards Right (1980–1987, 1994–1999, 2002–2003)
• Family Fortunes (1980–2002, 2006–2015, 2020–present)
• Into the Labyrinth (1980–1982)
• The Gentle Touch (1980–1984)
• Juliet Bravo (1980–1985)
• Cockleshell Bay (1980–1986)
• Children in Need (1980–present)