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Set in the belly of rural England, the small village of Winchmore Hill is a far cry from the world of privileged tech bros and slick silicon valley investors, often associated with crypto currencies. Yet in 2021, this community just north of Slough became the recruiting ground for a crypto investment called Koda. Thanks to the gregarious pub landlord, who promoted the coin and ran crypto nights, a big chunk of this community where everyone knows everyone put money into the currency. They invested thousands of pounds, in some cases their life savings, but when the currency plummeted months later, they lost it all, leaving the community utterly devastated. Lucinda Borrell explores the lasting impact on this small village, and asks why this particular crypto coin became so appealing in the first place.

With the number of potential modern slavery cases in England and Wales at a record level, File on 4 investigates how vulnerable people are being targeted and exploited by organised crime groups for cheap labour.Police estimate that there are tens of thousands of victims of modern slavery in the United Kingdom, being forced to work and live in inhumane conditions with little hope of escape.Investigators whose job it is to protect workers from exploitation reveal to File on 4 that the care industry has become their top priority in the past 18 months. Datshiane Navanayagam finds out why and asks whether the systems in place to support victims are working. Reporter: Datshiane Navanayagam Producers: Matt Pintus and Phil Marzouk Journalism Assistant: Tim Fernley Production Manager: Sarah Payton Digital Producers: Melanie Stewart-Smith and Georgia-Mae Browne Technical Producer: Cameron Ward Editor: Carl Johnston

It’s been called a bigger scandal than Thalidomide. The drug sodium valproate is estimated to have harmed 20,000 children in the UK. It’s mainly used to treat epilepsy and other conditions such as bipolar disorder.But taking the drug when pregnant can cause serious harm to unborn babies. Even when it was licenced fifty years ago, it was known to cause harm to foetuses in animals. But it wasn’t until 2005 that the patient information leaflet, which should come with a prescription- gave clear warnings on the risks of taking valproate in pregnancy to unborn children, beyond a small chance of spina bifida.File on 4 asks if the health regulators in the UK and the company who make it, Sanofi, did enough to inform patients of the severity of the drug's risks soon enough. Meanwhile, new risks of the drug are still emerging. A new study shows the drug may affect the neurological development of children fathered by men taking valproate. The evidence is still inconclusive, but neurologists are uncertain what to advise their male patients on valproate.And why are women still getting pregnant on it? We ask if the system set up to protect women taking it is working as it should be? A major review of the drug made a number of recommendations, including the setting up of specialist clinics and a compensation scheme for those affected. The programme asks what progress has been made in the UK to implement those changes, and are we lagging behind other countries? File on 4 speaks to the families whose children have been left with lifelong neurological and physical disabilities as a result of taking the medication. Reporter: Rachel Stonehouse Producers: Jane Fellner and Emma Forde Editor: Carl Johnston