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File on 4 InvestigatesEpisodes

  1. 27/01/2026

    News-making original journalism investigating stories at home and abroad

  2. 20/01/2026

    News-making original journalism investigating stories at home and abroad

  3. 13/01/2026

    News-making original journalism investigating stories at home and abroad

  4. Can cash grants help end homelessness?

    Is a one-off cash payment a way to ending someone’s homelessness?

  5. Firefighting's forever chemical legacy

    The story of firefighting foam’s toxic legacy.

  6. An unholy row over bishop accused of bullying.

    A bishop accused of bullying denies any wrongdoing.

  7. Adoption: The Blame Game

    The story of a hidden world of lies and blame when adoptions break down.

  8. Multi-Cancer Testing - Hype or Hope?

    Could multi-cancer detection tests help improve earlier diagnosis for NHS patients?

  9. The IT bug that's caused chaos in the courts

    An IT bug caused evidence to go missing or appear lost in some court cases.

  10. Chemsex: Hidden Pleasures, Hidden Harms

    Mobeen Azhar explores the risks some gay men take by mixing their sex lives with drug use.

  11. High Stakes: Gambling in the armed forces

    What's the scale of gambling amongst armed forces personnel and what's being done to help?

  12. Abused for Our Food

    Georgie Styles investigates evidence of exploitation and abuse in our food system.

  13. Youth Justice: The project keeping young offenders out of custody

    Why has the number of under-18s in custody in England and Wales dropped to a record low?

  14. Swiped. Inside London's phone theft epidemic

    Targeting the mobile phone thieves out to steal your handset and access its banking apps.

  15. Inside the Migrant Hotel

    Sue Mitchell takes listeners into the closed world of the migrant hotels.

  16. A Prison Inspector Calls

    A unique insight into the many problems facing our prison system.

  17. Sex Offenders: The Long Way Back

    Alison Holt reports on a charity that aims to rehabilitate men convicted of a sexual crime

  18. Domestic Abuse: Beyond the Checklist

    Leila Nathoo investigates the risk assessment system for domestic abuse.

  19. Rivers of Lead

    Are abandoned lead mines across the UK leaking lead into our food, water and blood?

  20. My Faulty Knee Replacement

    Why did it take eight years for a faulty knee implant to be withdrawn from use?

  21. Trip Shocked

    Psychedelics are going mainstream. But are we ignoring the risks?

  22. We Are Not a Conspiracy School

    Is a home educating community really teaching children conspiracy theories?

  23. Hospital abuse caught on camera

    How mistakenly switching on CCTV triggered the UK’s biggest adult abuse investigation.

  24. Car finance

    Helen Catt investigates commissions in the world of car finance.

  25. File on 4 Investigates: Stalker in the Church

    An investigation into a stalking campaign by a female Church of England preacher.

  26. The Invincible TikTok Gurus

    The social media get-rich-quick gurus seemingly impervious to criticism and accountability

  27. Adult Gaming Centres

    Adult gaming centres are on the increase - but are they protecting the vulnerable?

  28. The Ketamine Trail

    Paul Kenyon follows the ketamine trail.

  29. Abortion on Trial: The Nicola Packer Story

    Nicola Packer tells her story after being cleared of carrying out an illegal abortion.

  30. Missing Billions

    Missing Billions investigates lost or missing financial assets.

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