| Alan Carr: Chatty Man | Channel 4 | talk show | 16 | 202 |
| Alan Carr: Happy Hour | Channel 4 | — | 1 | 3 |
| Alan Davies Après-Ski | BBC Two | comedy television series | 1 | 3 |
| Alan Partridge: Welcome to the Places of My Life | Sky Atlantic | mockumentary | — | — |
| Alan Titchmarsh's Gardening Club | — | — | — | 10 |
| Alas Smith and Jones | British Broadcasting Corporation | sketch comedy, comedy television series | 10 | 62 |
| Albert and Victoria | ITV | sitcom | — | 12 |
| Albie | CITV | — | — | 26 |
| Albion Market | ITV | soap opera | 1 | 100 |
| Alcock and Gander | ITV | sitcom | 1 | 6 |
| Alesha's Street Dance Stars | — | — | — | — |
| Alex Polizzi: Chefs on Trial | — | — | — | — |
| Alex Polizzi: The Fixer | BBC Two | — | 3 | 18 |
| Alex Rider | Amazon Prime Video | espionage television series, thriller television series, action television series, drama television series | 3 | 24 |
| Alexander Armstrong's Big Ask | U&Dave | panel game | 2 | 14 |
| Alexander the Greatest | ITV | sitcom | 2 | 13 |
| Alexander: The Making of a God | Netflix | drama television series, documentary, biographical film, documentary television program | 1 | 6 |
| Alexei Sayle's Merry-Go-Round | — | comedy television series | — | — |
| Alexei Sayle's Stuff | BBC Two | comedy television series | 3 | 18 |
| Alfred Marks Time | — | — | — | — |
| Alfresco | ITV | — | 2 | 13 |
| Alias the Jester | ITV | — | 1 | 13 |
| Alice & Jack | Channel 4 | — | 1 | 6 |
| Alien Empire | BBC One | documentary television program | — | 6 |
| Alien Investigations | Channel 4 | — | 1 | 1 |
| Alien Worlds | Netflix | nature documentary, science fiction television series, documentary television program, docufiction, speculative evolution | 1 | 4 |
| All About George | — | — | — | — |
| All About Me | BBC One | sitcom | 3 | 22 |
| All About Two | BBC Two | — | — | 1 |
| All Along the Watchtower | BBC One | sitcom | — | 6 |
| All at No 20 | ITV | sitcom | 2 | 12 |
| All at Sea | CBBC | sitcom | 2 | 26 |
| All Change | — | — | — | — |
| All Clued Up | ITV | game show | 4 | 88 |
| All Creatures Great and Small | BBC One | comedy drama, drama television series | 7 | 90 |
| All Creatures Great and Small | Channel 5 | drama film, comedy film, historical drama | 7 | 48 |
| All for Love | — | — | — | — |
| All Gas and Gaiters | BBC One | sitcom | 5 | 33 |
| All Good Things | — | — | — | 6 |
| All in Good Faith | ITV | sitcom | 3 | 18 |
| All In The Best Possible Taste with Grayson Perry | Channel 4 | — | 1 | 3 |
| All in the Method | — | — | 1 | 5 |
| All New Traffic Cops | Channel 5 | documentary film, reality television | 14 | 179 |
| All Night Long | British Broadcasting Corporation | sitcom | — | 6 |
| All or Nothing: Arsenal | Amazon Prime Video | — | — | — |
| All or Nothing: Juventus | — | — | — | — |
| All or Nothing: Manchester City | — | — | — | — |
| All Our Saturdays | ITV | sitcom | — | 6 |
| All Our Yesterdays | — | — | — | — |
| All Over the Place | BBC Children's and Education | — | 7 | 65 |
| All Over the Workplace | BBC Children's and Education | — | 2 | 20 |
| All Quiet on the Preston Front | BBC One | comedy drama | 3 | 19 |
| All Rise for Julian Clary | BBC Two | — | 2 | 13 |
| All Round to Mrs. Brown's | BBC One | — | 4 | 24 |
| All Star Comedy Carnival | — | Christmas film | — | — |
| All Star Family Fortunes | ITV | game show | 12 | 127 |
| All Star Mr & Mrs | ITV1 | game show | 8 | 73 |
| All That Glitters: Britain's Next Jewellery Star | — | — | — | — |
| All the Small Things | BBC One | — | 1 | 6 |
| All Together Now | BBC One | talent show, entertainment television program | 2 | 6 |