Dirty Business
9pm, Channel 4
In 1999, eight-year-old Heather Preen died after contracting E coli while playing on a beach. Twenty years later, two men in Oxfordshire contacted their water company asking about dead fish in the local river. This striking three-part drama is based on a decade-long investigation into England’s water companies dumping raw sewage. It will have the nation furiously demanding answers. Jason Watkins, David Thewlis, Asim Chaudhry and Posy Sterling star. Hollie Richardson
Bear Grylls: Wild Reckoning
2pm, BBC One
A peculiar series in which Bear Grylls attempts to solve emotional problems through the medium of outdoor challenges. Mario is concerned that his 18-year-old son, Xavier, is going off the rails. What better way to address this problem than by climbing up a sheer cliff face? Phil Harrison
AI Confidential With Hannah Fry
9pm, BBC Two
The public view of artificial intelligence is a dangerous mix of profound worry and scant understanding, but few people are better placed to bridge such gaps than expert science explainer Prof Hannah Fry. First she describes how LLMs (large language models, or machines you can chat to) work, and identifies their fatal flaw: they tell you what you want to hear. Jack Seale
A Knight of the Seven Kingdoms
9pm, Sky Atlantic
The refreshingly low-key Game of Thrones spin-off about towering, guileless wannabe knight Dunk and his tiny, razor-sharp squire, Egg, navigating a rowdy jousting tournament has been coarse, funny, violent and emotionally affecting. After the messy Targaryen tangle of Dunk’s trial of combat, can this finale stick the landing? GV
Small Prophets
10pm, BBC Two
Episode three of Mackenzie Crook’s strange but endearing comedy drama about a man attempting to grow tiny people in jars who can – just maybe – help him find out what happened to his missing girlfriend. With the homunculi project under way, Michael lets his co-worker Kacey have a sneak peek. Hannah J Davies
Industry
10.40pm, BBC One
Labour politicians dragged down by unsavoury connections and hanging on by a thread – no it’s not Newsnight, but the penultimate episode of Industry’s epic fourth season. With MP Jenny feeling the brunt of her links with Tender, Yasmin goes full spin doctor to “help” her out. HJD
Live sport
Women’s FA Cup football: London City Lionesses v Tottenham Hotspur, 7pm, TNT Sports 1 At Copperjax Community Stadium.
