TV Guide UK Tonight: Sat 18 Apr 2026 – Casualty Finale, The Murder Line & World Snooker Championship
Saturday 18 April and there’s a lot happening at once. The Casualty Learning Curve series finale lands on BBC One at 8:30pm, and it opens with a funeral — which tells you the tone immediately. The Murder Line, ITV’s new six-part crime thriller with Minnie Driver and Stephen Amell, gets its UK premiere at 10pm. Earlier in the day, the World Snooker Championship opens at the Crucible in Sheffield for seventeen days of BBC coverage. And in the early evening, Blankety Blank is back on BBC One at 6:25pm with Series 5 Episode 2, followed by Celebrity Sabotage on ITV1 at 7pm.
Quick Picks: Tonight’s Best
- Casualty: Learning Curve Finale ⭐ — BBC One, 8:30pm — Series finale. Funeral. A death. Iain and Faith’s baby. It all lands tonight
- The Murder Line — ITV1, 10pm — Six-part premiere. Minnie Driver, Stephen Amell. Crime thriller with a different look
- World Snooker Championship — BBC Two, from 10am — The Crucible opens. First round starts today
- Blankety Blank — BBC One, 6:25pm — Series 5. Aisling Bea and Rhod Gilbert on the panel
- Celebrity Sabotage — ITV1, 7pm — Episode 5. Joel Dommett’s hidden-camera chaos continues
- Celebrity Catchphrase — ITV1, 6:50pm — Stephen Mulhern, £50,000 for charity
Sport: World Snooker Championship
World Snooker Championship – BBC Two/One/Four, from 10am
The Crucible opens today. Seventeen days, sixteen first-round matches, and eventually one champion at the end of it all on 4 May. Opening day at Sheffield is one of the better days of the snooker calendar — partly because the seeds are being tested by qualifiers who’ve spent weeks building up to this moment with nothing to lose, and partly because it’s opening day, which means the drama is still entirely theoretical and anything could happen.
First-round matches run across three sessions: the morning session begins at 10am, the afternoon at 2:30pm, and the evening at 7pm. BBC coverage moves between BBC Two, BBC One and BBC Four throughout the day, with every frame available to watch live on BBC iPlayer. The tournament runs over best-of-19 frames in the first round, so an afternoon session match can genuinely absorb a significant chunk of your Saturday if it goes to the distance.
Worth having BBC iPlayer open on Saturday regardless of what else is happening tonight.
Early Evening
Blankety Blank – BBC One, 6:25pm
Series 5 settles into its second episode with a panel that has enough genuine comedy talent in it to make the format actually work rather than just coast. Bradley Walsh presides as this week’s celebrities — Aisling Bea, Rhod Gilbert, Jill Scott, Guz Khan, Kate Bottley and Harry Aikines-Aryeetey (Nitro) — try to fill in blanks that are probably funnier than the contestants expect. Blankety Blank’s format is thin enough that it lives or dies on whether the celebrities are willing to commit to stupid answers, and this panel looks like a reasonable bet. Catch up via BBC iPlayer.
Celebrity Catchphrase – ITV1, 6:50pm
Stephen Mulhern hosts as three celebrities spend an hour trying to identify phrases from animated clues while raising money for their chosen causes. The £50,000 jackpot gives the charity element some genuine stakes, and Mulhern makes it more fun than the format deserves, which is basically his job description at this point. Catch up via ITVX.
Celebrity Sabotage – ITV1, 7pm
Episode 5, and Joel Dommett’s hidden-camera sabotage format continues its Saturday run. The core team — Dommett, Judi Love, Sam Thompson and GK Barry — are planted inside a completely fabricated TV show while unsuspecting members of the public arrive convinced they’ve been chosen for a genuine new ITV series. The challenge varies each week depending on what kind of fake show the producers have constructed, which at least means each episode has a different shape even if the overall concept is consistent. What actually happens depends on how committed the saboteurs are to disrupting things, which varies more than you’d expect. Catch up via ITVX.
Prime Time
Casualty ⭐ – BBC One, 8:30pm (SERIES FINALE)
Learning Curve Part 12. Twelve episodes. This is what they’ve been building to.
The finale opens at a funeral. Stevie Nash delivers the eulogy. Iain Dean is in tears. The show’s not messing around — it tells you immediately that someone is gone, then pulls back to show you how it got there. That structure is old hat, but it still works when a drama has earned it. Learning Curve has.
Iain and Faith’s baby finally arrives today, though the search results for this one all carry enough ominous wording about the delivery going smoothly that you should probably not make assumptions. Matty Linlaker is also facing a decision about a clinical fellowship — Kim Chang’s resignation has cleared the path for him, but whether he takes it is another matter.
One character dies this episode. The show has confirmed it without saying who. If you’ve been watching Learning Curve, tonight is not the week to check your phone and half-watch from the kitchen.
This has been one of the better Casualty boxsets in recent memory — tighter than the usual format, with actual consequences rather than the weekly reset that long-running dramas tend to rely on. Twelve episodes, one sustained storyline, a proper ending. BBC One, 8:30pm. Catch up via BBC iPlayer.
Late Night
The Murder Line – ITV1, 10pm (SERIES PREMIERE)
ITV1’s new six-part crime thriller arrives from Canada with a cast and setting that are both worth paying attention to. Stephen Amell — best known in the UK as Arrow — plays Henry Roland, a police officer in the Thousand Islands region of Ontario who makes the wrong call trying to protect someone he’s known since childhood. That call sets off a chain of events that puts him in the crossfire between fellow officers, criminals and a British crime boss played by Minnie Driver.
Hamza Haq, who UK audiences might know from Transplant, plays the childhood friend whose connections turn out to be considerably more complicated than Roland expected. Driver, cast against the gentle-sounding type she’s sometimes played, is a crime boss described as “ruthless” — which she wears comfortably — and the wider cast includes Thomas Craig, who Coronation Street viewers will recognise.
The show was known as The Borderline in the US and Canada, where it originated. The Canadian setting matters here — the Thousand Islands region is one of those borderlands (literally, it straddles Ontario and upstate New York) where jurisdiction becomes genuinely complicated, which gives the series a different feel from either a straight British crime drama or an American procedural. That ambiguity is baked in, and the show leans into it.
Full series available on ITVX from tonight. Whether you want to watch episode 1 now and binge the rest later is between you and your Saturday night plans. Catch up via ITVX.
The Viewing Schedule
| Time | Channel | Programme |
|---|---|---|
| 10:00am | BBC Two | World Snooker Championship (morning session) |
| 2:30pm | BBC Two/One | World Snooker Championship (afternoon session) |
| 6:25pm | BBC One | Blankety Blank (Series 5, Episode 2) |
| 6:50pm | ITV1 | Celebrity Catchphrase |
| 7:00pm | BBC Two/One | World Snooker Championship (evening session) |
| 7:00pm | ITV1 | Celebrity Sabotage (Episode 5) |
| 8:30pm | BBC One | Casualty: Learning Curve – Series Finale |
| 10:00pm | ITV1 | The Murder Line (Series Premiere, Episode 1) |
What’s On Streaming
BBC iPlayer: Casualty Learning Curve (all episodes including finale), Blankety Blank Series 5, World Snooker Championship
ITVX: The Murder Line (full series from tonight), Celebrity Sabotage, Celebrity Catchphrase
Frequently Asked Questions
What time is the Casualty finale on BBC One tonight (Saturday 18 April 2026)?
Casualty: Learning Curve Part 12 — the series finale — is on BBC One at 8:30pm tonight (Saturday 18 April 2026). The episode opens with funeral scenes, then the show works backwards to reveal what happened. Iain and Faith’s baby arrives, one character dies, and Matty faces a decision about his future. The full Learning Curve boxset is available on BBC iPlayer.
Is EastEnders on TV tonight (Saturday 18 April 2026)?
No, EastEnders does not air on Saturdays. The soap runs Monday to Friday on BBC One. If you’ve missed any episodes this week, they’re all available on BBC iPlayer.
What time is The Murder Line on ITV1 tonight?
The Murder Line premieres on ITV1 at 10pm tonight (Saturday 18 April 2026). It’s episode 1 of the six-part crime thriller starring Stephen Amell, Minnie Driver and Hamza Haq. The full series is available to stream now on ITVX if you don’t want to wait for the weekly broadcast.
What time is the World Snooker Championship on BBC today?
The 2026 World Snooker Championship opens at the Crucible in Sheffield today (Saturday 18 April). BBC coverage runs across three sessions: morning at 10am, afternoon at 2:30pm, and evening at 7pm. Coverage is split across BBC Two, BBC One and BBC Four, with every frame live on BBC iPlayer. The tournament runs until 4 May.
What time is Blankety Blank on BBC One tonight?
Blankety Blank Series 5 Episode 2 is on BBC One at approximately 6:25pm tonight (Saturday 18 April 2026). Bradley Walsh hosts with panellists including Aisling Bea, Rhod Gilbert, Jill Scott, Guz Khan, Kate Bottley and Harry Aikines-Aryeetey. Catch up via BBC iPlayer.
What time is Celebrity Sabotage on ITV1 tonight?
Celebrity Sabotage Episode 5 is on ITV1 at 7pm tonight (Saturday 18 April 2026). Joel Dommett hosts alongside the core sabotage team of Judi Love, Sam Thompson and GK Barry. Catch up via ITVX.
What’s the best thing to watch on TV tonight (Saturday 18 April 2026)?
Casualty on BBC One at 8:30pm is the drama event of the night — twelve episodes of Learning Curve have been building to this, and the finale delivers a character death, a difficult birth and a proper ending. For something new, The Murder Line premieres on ITV1 at 10pm: Minnie Driver, Stephen Amell, and a Canadian crime setting that looks different from the usual. In the background, the World Snooker Championship opens at the Crucible today and the BBC coverage runs all day if you want snooker with your Saturday.
Final Verdict
Casualty at 8:30pm on BBC One is the night’s centrepiece. Learning Curve has been one of the better runs the show has produced — twelve episodes with genuine momentum, real stakes, and an ensemble cast that’s been given the time to develop. The finale doesn’t soft-pedal it: funeral, difficult birth, death. If you’ve been watching, this is the payoff.
The Murder Line at 10pm on ITV1 is worth staying up for if crime drama is your Saturday night preference. Minnie Driver as a crime boss, Stephen Amell as the cop who’s crossed the wrong line. A different setting, a sharp cast. The full series is on ITVX if you want to get ahead of the schedule.
The World Snooker Championship opens at the Crucible today and is essentially background television for the next seventeen days — in the best possible sense. BBC iPlayer will have it on throughout.
Related: What’s On TV Tonight Saturday | What’s On TV Tonight Fri 17 Apr 2026 | What’s On TV Tonight Sun 19 Apr 2026
