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Crossing the Line - Britain's Teenage Drug Mules

The urban gangs using children to flood rural Britain with drugs and violence.

• 38 mins

The Nuclear Option - Powering the Future and Cleaning Up the Past

How are plans for the future of nuclear power progressing - and how to clean up the past?

• 38 mins

Paradise Papers: Profits from the Poor

An investigation into international offshore finance.

• 38 mins

What's New about the New Far Right?

What threat do the new and emerging far right groups pose to the UK?

• 38 mins

Degrees of Deception

How thousands of people in the UK have obtained fake and worthless degrees.

• 40 mins

Sheltered from Harm

Who protects the residents of sheltered housing schemes from abuse or neglect?

• 38 mins

A Deadly Prescription

As deaths involving prescription drugs increase, who is supplying demand on the streets?

• 38 mins

Potters Bar, Ukraine's stolen billions and the Eurovision connection

UK companies are being used to launder dirty money as new transparency rules are flouted.

• 38 mins

Dying on the Streets

Why does life on the street also mean death on the street for some rough sleepers?

• 38 mins

On the Critical List? Britain's Ageing Hospitals

Can the NHS afford to run and replace its ageing hospitals? Lesley Curwen investigates.

• 37 mins

Disclosing the Truth

How are disclosure of evidence failures affecting justice in the magistrates' courts?

• 38 mins

The Missing Bitcoin Billions

The mystery of the missing Bitcoin billions: a real-life cryptocurrency crime drama.

• 38 mins

Squalid Prisons - Who's to Blame?

Have private contracts for prison maintenance made our jails more dangerous?

• 38 mins

A Place of Safety?

An investigation into standards in an NHS trust providing mental health care.

• 36 mins

The Invisible Man of Britain’s Far Right

An investigation into Jim Dowson, the front man for Knights Templar International.

• 36 mins

The Lost Children of Marianvale

An investigation into the former Marianvale mother and baby home in Northern Ireland.

• 38 mins

Criminal Records?

What part is social media playing in the rise in violent crime in the UK?

• 38 mins

Citizenship for Sale

An investigation into the lucrative trade of selling citizenship to the world's rich.

• 38 mins

Failed by Forensics?

Are failings in forensic science leading to more miscarriages of justice?

• 38 mins

Back Home from ISIS

What risks do returning jihadis from IS in Iraq and Syria pose in the UK?

• 38 mins

Falling Short - Fake News and Financial Markets

Is financial fake news damaging business? Geoff White reports.

• 38 mins

The Private World of the NHS

Why is 'private' the word that dare not speak its name in the National Health Service?

• 38 mins

Construction in Crisis?

Are construction giants exploiting their suppliers to balance their books?

• 38 mins

Prison, drugs and debts - who's paying the price?

Prison, drugs and debts - who's paying the price of the thriving drug trade in our jails?

• 38 mins

Counting the Cost: Antidepressant Use in Children

Why are more children than ever being prescribed antidepressants and what are the risks?

• 38 mins

Paralympics – Gaming the System?

Are some paralympic athletes gaming the classification system to win medals?

• 38 mins

Debt Killed My Dad

Helen Grady investigates the high cost of bankruptcy.

• 37 mins

Transforming Care - Is it Working?

Lucy Adams investigates care for the learning disabled seven years after Winterbourne View

• 37 mins

Paying the Price - Private Hospitals

File on 4 investigates standards of care in some UK private hospitals.

• 37 mins

Fuelling the future?

Does Britain’s green energy strategy stack up?

• 37 mins