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Dirty Business

2026 • 9.1 • Drama, Crime •

GB • English

Writers: Joseph Bullman

Two amateur detectives in an Oxfordshire village discover dying fish in their river. When they contact the water company for answers, the company's odd, evasive response prompts them to launch an investigation that continues today.

Cast

David Thewlis

as Ash Smith

Jason Watkins

as Peter Hammond

Posy Sterling

as Julie Preen

Tom McKay

as Mark Preen

Alex Jennings

as Sir James Bevsn

Asim Chaudhry

as Mickey Lazarus

Alice Lowe

as Susan Day

Chanel Cresswell

as Hannah Swift

Episodes

Episode 1

E1 51m

When a Oxfordshire river turns brown, two locals ask the water company why. So begins an epic 10-year trail to the heart of one of the great corporate and regulatory scandals in our country’s history.

Episode 2

E2 52m

The drama continues. An eight-year-old girl dies after a trip to the beach. Was it the raw sewage dumped there?

Episode 3

E3 52m

The drama concludes as Dirty Business flushes out a story of pollution, criminal convictions and corporate wealth