Mike Smith
Here’s everything you need to know about the new 2026 Channel 4 series Dirty Business, starring David Thewlis and Jason Watkins.
How to watch Dirty Business in Australia on Channel 4
To watch Dirty Business in Australia, use a reliable VPN and connect to a United Kingdom server so you can access Channel 4. After connecting, sign in or create a free Channel 4 account and stream the series online on supported devices.
- Subscribe to NordVPN
- Install the VPN app on your device.
- Connect to a UK-based server.
- Open Channel 4 website, then login or sign up for a free account. A UK postal code is required when creating a new account, and you can use a UK postcode generator if needed.
- You are all set to watchDirty Business Series!
Dirty Business Synopsis
Dirty Business is a 2026 series that follows a decade-long investigation into sewage pollution in England, focusing on two neighbours who uncover shocking truths about water companies, environmental damage, and corporate accountability after noticing their local river is contaminated.
Set in Oxfordshire, the drama blends real-life events with powerful storytelling, showing how whistleblowers, victims, and campaigners exposed widespread environmental harm. The story explores personal tragedies, public health risks, and systemic failures while highlighting the fight for justice against powerful institutions.
When Does Dirty Business Premiere?
Season 1 of Dirty Business premieres Monday, February 23, 2026 at 9:00 PM on Channel 4. The three-part series airs across consecutive nights, with new episodes releasing daily until the finale on February 25, 2026.
Dirty Business Season 1 Episodes
The first season consists of three episodes that follow the investigation and its real-world consequences.
- Episode 1 – Premiere date: February 23, 2026
A retired detective and an Oxford professor begin asking questions after noticing their river turning brown, launching a 10-year investigation into water contamination. - Episode 2 – Premiere date: February 24, 2026
The investigation deepens as families affected by sewage pollution seek answers, including parents mourning a tragic loss linked to contaminated coastal water. - Episode 3 – Premiere date: February 25, 2026
The story reaches its conclusion as evidence connects environmental pollution to serious health consequences, while campaigners push for accountability and change.
Dirty Business (2026) Cast
The series features a strong ensemble of British actors portraying real-life inspired figures involved in the investigation.
- David Thewlis as Ash
- Jason Watkins as Peter
- Asim Chaudhry as Mickey
On What Devices Can You Watch Channel 4?
You can stream Dirty Business on Channel 4 across a wide range of compatible devices.
| Device Type | Supported Devices |
|---|---|
| Smart TVs | Samsung Smart TV, LG Smart TV, Android TV |
| Streaming Devices | Amazon Fire TV, Roku, Apple TV, Chromecast |
| Mobile Devices | iPhone, iPad, Android phones and tablets |
| Computers | Windows PC, Mac via web browsers |
| Game Consoles | PlayStation, Xbox |
| Web Browsers | Chrome, Safari, Edge, Firefox |
Is Dirty Business Suitable for All Ages?
Dirty Business is intended for mature audiences due to serious themes involving environmental damage, illness, and real-life tragedy. It is generally suitable for older teenagers and adults, typically aligned with a TV-14 or similar content rating.
FAQs
Who created and directed Dirty Business?
The series was written and directed by Joseph Bullman.
Is Dirty Business based on a true story?
Yes. The drama is inspired by real environmental campaigns and investigations into sewage pollution in England, including activism connected to the Windrush Against Sewage Pollution group.
Which production company made the series?
Dirty Business was produced by Halcyon Heart Films for Channel 4, with producers Laura McCutcheon and Meeshan Saxena and executive producer Aysha Rafaele.
Where was Dirty Business filmed?
Filming took place in locations across the United Kingdom, including areas representing Oxfordshire communities affected by water pollution, to maintain realism and authenticity.
Dirty Business (2026) Trailer
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