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Hinterland (2013)
7.6/10on IMDb
First aired
The easiest place to start with Welsh crime drama. Every scene was filmed twice, once in Welsh as Y Gwyll and once in English, with a little subtitled Welsh left in the English cut. Aberystwyth and the Ceredigion hills do a lot of the talking: rain on slate, empty farmhouses, roads that seem to end nowhere.
Pick Y Gwyll if you're learning or want the fuller sense of place; pick Hinterland if you want the easier way in. Three series, and the first is the slowest, so give it two episodes before deciding.
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Keeping Faith (2017)
7.1/10on IMDb
First aired
Eve Myles plays Faith, a solicitor on maternity leave whose husband vanishes, and she carries the whole thing with frayed, funny warmth. It was filmed in both languages at once and aired first in Welsh as Un Bore Mercher, "One Wednesday Morning."
The English version became the most popular show on BBC Wales in more than 25 years and a huge iPlayer hit, and it's the natural choice for most viewers. Much of the fictional town of Abercorran was shot in Laugharne, so the Carmarthenshire estuary is almost a second lead. Three series in all; the first is the tightest.
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Hidden (2018)
7.3/10on IMDb
First aired
North Wales gets its own brooding detective, and Snowdonia's woods and quarry towns make a colder, harder backdrop than the south's coastlines. Siân Reese-Williams and Siôn Alun Davies are a well-matched pair of detectives, and the second series moves the case into slate-gray Blaenau Ffestiniog.
It went out in Welsh on S4C as Craith, then as Hidden in a bilingual version that's mainly English. Learners will enjoy hearing both languages sit side by side the way they do in Gwynedd. Three series, with a definite ending.
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The Light in the Hall (2022)
7.0/10on IMDb
First aired
A grieving mother and a journalist face the parole of the man convicted of a murder in a Carmarthenshire village, and Joanna Scanlan is devastating as the mother. Alexandra Roach and Iwan Rheon, both Welsh, round out a cast that makes the village feel lived in.
Made in English and Welsh versions as Y Golau, it premiered on S4C and later reached Channel 4, which makes the English cut easy to find. A second story, Still Waters, followed in 2025 with a largely new cast, so you can stop after either series.
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The One That Got Away (2024)
6.8/10on IMDb
First aired
Cleddau in Welsh, The One That Got Away in English: a nurse's murder throws an old conviction into doubt and reunites two former lovers on the case, played by Elen Rhys and Richard Harrington. Catherine Tregenna created and wrote it, and the Pembrokeshire coastline gives it big skies and a small-town closeness.
The two versions were filmed back to back, and both are on BBC iPlayer. The first series won Best Drama at the RTS Cymru Wales Awards, and a second began on S4C in October 2026, so it's the most current of the bilingual thrillers.
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Tree on a Hill (2023)
First aired
A long-married, very ordinary couple end up on the wrong side of the law in a bypassed town near Bannau Brycheiniog, and the tone is dark comedy rather than grim crime. Nia Roberts and Rhodri Meilir play Margaret and Clive, and the upper Swansea Valley around Ystradgynlais stands in for fictional Penwyllt.
Shot twice from the same script as Pren ar y Bryn and Tree on a Hill, it has a twist in the English version: writer Ed Thomas set it in a world where Welsh has been forgotten and is only a memory. Watching both is an unusual way to see what the language adds. Six episodes, with both versions on BBC iPlayer in the UK.
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Rough Cut (2022)
7.4/10on IMDb
First aired
Dal y Mellt is a Welsh-language crime caper about Carbo, a young man drawn into theft, lies and bigger players than he can handle, adapted from Iwan "Iwcs" Roberts's novel. It moves from Meirionnydd to Cardiff to Soho, with a swagger that feels nothing like the usual rain-soaked Welsh detective show.
It was the first Welsh-language-only drama licensed to Netflix, where it streamed as Rough Cut. There is no English version, so watch it with subtitles; a second series arrived on S4C and BBC iPlayer in January 2026.
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Bang (2017)
6.6/10on IMDb
First aired
A loner comes into possession of a gun in Port Talbot, and his sister is the detective trying to trace it. Jacob Ifan and Catrin Stewart play the siblings, and the steelworks town gives the family story its industrial edge.
Bang is the most honest picture here of how bilingual south Wales actually talks: rather than making two versions, it lets characters move between Welsh and English as many people there do every day, which creator Roger Williams said reflects living life through two languages. That makes it a gentle step for learners, with English subtitles for the Welsh. Two series, 14 episodes.
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Anfamol (2023)
First aired
A dark but very funny comedy drama about Ani, a successful lawyer who has just turned 40 and decides to have a baby on her own with help from a sperm bank. It began life as Rhiannon Boyle's stage play, and the screen version keeps the frankness and the pathos.
It's in Welsh, with English subtitles on S4C Clic and BBC iPlayer. A second series, following Ani through single parenthood, premiered in April 2026, so there is more than one round to enjoy if the first lands.
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People of the Valley (1974)
8.1/10on IMDb
First aired
Pobol y Cwm, "People of the Valley," has run since October 1974 and is the longest-running TV soap the BBC has produced. It follows the Welsh-speaking residents of Cwmderi, a fictional farming village, and is made at the BBC's drama studios in Cardiff Bay.
This is the one to try if you're learning Welsh: everyday conversation at everyday speed, with a weekly omnibus that carries English subtitles. Nobody needs to start from the beginning; pick it up any week.
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Gavin & Stacey (2007)
8.2/10on IMDb
First aired
Half Essex, half Barry, and the Welsh half is where most of the big laughs live: Nessa, Uncle Bryn and the Barry Island seafront. James Corden and Ruth Jones wrote and starred in it, and it was made for BBC Cymru Wales, which is why it belongs here rather than on a general British comedy list.
Three series plus Christmas specials, and the 2024 finale was the most-watched scripted show in the UK in more than two decades. If you've somehow missed it, it's the friendliest possible introduction to the south Wales sense of humor.
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Stella (2012)
8.0/10on IMDb
First aired
Ruth Jones co-created this and plays Stella, a mother in her forties juggling kids, exes and a houseful of eccentric relatives in the fictional valleys town of Pontyberry. It was filmed largely in Ferndale in the Rhondda, and the terraces climbing the hillside are part of every episode's texture.
Where Gavin & Stacey goes for big set pieces, Stella is warmer and softer, closer to a comedy drama than a sitcom. Six series and two Christmas specials ran on Sky One from 2012 to 2017, so there's a lot of it to settle into.
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Torchwood (2006)
7.7/10on IMDb
First aired
The Doctor Who spin-off that's actually about Cardiff: Russell T Davies set his alien-hunting team in a secret base beneath Roald Dahl Plass in Cardiff Bay, and the city is the show's home rather than a stand-in. Eve Myles's Gwen Cooper is the grounded Welsh heart of it.
BBC Wales made the first three series itself. The fourth, Miracle Day, was a co-production with the American network Starz and moved much of the action to the US, so newcomers who want the Welsh flavor should start at the beginning and treat the third, Children of Earth, as the peak.
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The Indian Doctor (2010)
7.9/10on IMDb
First aired
Sanjeev Bhaskar plays Prem Sharma, a doctor from India who arrives in the small Welsh mining village of Trefelin in 1963, and the comedy comes from a close community slowly deciding what to make of him. It's gentle period television, made with the Welsh independent Rondo Media.
Originally a BBC daytime drama, so episodes are short and easy to fit in. Three series, 15 episodes: ideal for anyone who wants a mining village's gossip and loyalties without a murder in sight.
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The Pact (2021)
6.9/10on IMDb
First aired
Four friends who work at a 100-year-old family brewery in mid-Wales take revenge on their abusive boss after the brewery's centennial party, and when they go back for him he is dead. The strain of keeping their pact is the whole drama. Laura Fraser, Julie Hesmondhalgh and Eiry Thomas lead a cast that makes the small-town loyalties feel real.
Pete McTighe created and wrote it, and it was made and filmed in Wales for BBC One. The 2022 second series tells a new story with a new cast, so the first works perfectly as a stand-alone six-parter.
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Steeltown Murders (2023)
7.1/10on IMDb
First aired
A true story told across two timelines: the 1973 murders of three young women in the Port Talbot area, and the pioneering DNA work that identified Joseph Kappen almost 30 years later. Philip Glenister and Steffan Rhodri play the detectives, and the series treats the bereaved families with real care.
Written by Ed Whitmore, directed by Marc Evans and made by the Welsh company Severn Screen for BBC One in 2023. Four episodes, and a strong pick for anyone who likes procedural detail over twists.
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The Way (2024)
5.6/10on IMDb
First aired
Michael Sheen directed this three-part drama, created with James Graham and Adam Curtis, in which strikes at Port Talbot's steelworks spiral into civil unrest and a family goes on the run. Most of it was filmed in Port Talbot, the town where Sheen grew up, and it has the anger of a story told by people from the place.
It's bold, stylized and divisive, more political thriller than kitchen-sink drama. Three hours on BBC iPlayer, and the one to choose if you want contemporary Wales rather than its past.
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Lost Boys and Fairies (2024)
8.5/10on IMDb
First aired
Gabriel and his partner Andy set out to adopt a young boy, Jake, and Gabriel has to face an unhappy childhood and a homophobic father before he can be the parent he wants to be. Siôn Daniel Young is superb as Gabriel, and Daf James's script, in English and Welsh, is funny and tender in the same breath.
It was filmed and set in Wales and went on to win five Welsh BAFTAs and an International Emmy for best miniseries. Three episodes: the most emotional watch on this list, and an easy recommendation to friends who think Welsh TV means crime.
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The Guest (2025)
6.6/10on IMDb
First aired
A cleaner hired by a wealthy businesswoman finds that their friendship is turning into a manipulative game of cat and mouse. Eve Myles plays the businesswoman, Fran, and Gabrielle Creevy co-leads as Ria, with writer Matthew Barry openly drawing on '90s psychological thrillers.
Set and filmed across Wales, from Cardiff's streets to Rhossili Bay, it aired on BBC One and BBC Wales in September 2025. Pick it for a glossy, twisty binge rather than slow-burn atmosphere.
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