| 100% | INSPECTOR | 9 | & 15D ITV detective series that originally ran from 1987-93 based on novels by Colin Dexter |
| 30% | LASTSEEN | 8 | & 15D 1976 novel by Colin Dexter |
| 29% | DOWNTON | 7 | & 17D ITV drama series centred on the Crawley family that ran from 2010-15 |
| 29% | TAGGART | 7 | ITV detective series that starred Mark McManus in the title role from 1983 until his death in 1994 |
| 27% | THETRIPODS | 10 | 1980s BBC TV series based on novels by John Christopher |
| 26% | THEWENCHIS | 10 | 1989 novel by Colin Dexter |
| 26% | LASTBUSTO | 9 | & 1D 1975 novel by Colin Dexter |
| 26% | BRAVENEWWORLD | 13 | 2020 Peacock sci-fi series that was based on an Aldous Huxley novel: 3 wds. |
| 26% | THEBILL | 7 | ITV police drama series that ran from 1984-2010 |
| 26% | RIDDLEOF | 8 | & 6A The —, 1983 novel by Colin Dexter |
| 25% | GRANTCHESTER | 12 | ITV series based on short stories by James Runcie featuring Canon Sidney Chambers |
| 25% | OUTLANDER | 9 | Fantasy TV series based on novels of the same name by Diana Gabaldon |
| 25% | HOW | 3 | ITV children's infotainment series that ran from 1966-81 |
| 25% | SILO | 4 | Dystopian Apple TV+ show based on novels by Hugh Howey |
| 25% | BRIDGET | 7 | "___ Jones's Diary," 1996 novel by Helen Fielding that is roughly based on Jane Austen's "Pride and Prejudice" |
| 25% | TRIPODS | 7 | The —, 1980s BBC TV series based on novels by John Christopher |
| 24% | DISCLAIMER | 10 | Apple TV+ series based on a novel by Renée Knight |
| 24% | FAME | 4 | "Hallmark Hall of ___," anthology TV series that moved from NBC to three other networks and now runs on Hallmark Channel |
| 24% | SHADOWHUNTERS | 13 | Fantasy TV series based on "The Mortal Instruments" novels by Cassandra Clare |
| 24% | FAIRLADY | 8 | Musical based on a novel by George Bernard Shaw, "My ___" was the longest-running Broadway show between 1956 - 1962: 2 wds. |
| 24% | THEWALKINGDEAD | 14 | Dystopian horror TV series that depicts the post-apocalyptic horror and is based on a comic series by Robert Kirkman: 3 wds. |
| 23% | TRUEBLOOD | 9 | Fantasy TV series based on "The Southern Vampire Mysteries" novels by Charlaine Harris (2 wds.) |
| 23% | DUBLINMURDERS | 13 | BBC/Starz crime series set in Ireland based on novels by Tana French (2 wds.) |
| 23% | AMERICANGRIT | 12 | Fox reality show based on military training that's hosted by 30-/32-Across: 2 wds. |
| 23% | BILL | 4 | The —, ITV police drama series that ran from 1984-2010 |
| 23% | DONQUIXOTE | 10 | Ballet based on a 1605 novel, by George |
| 23% | LIARS | 5 | "Pretty Little ___" (former teen drama TV series based on novels by Sara Shepard) |