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An investigation into the state of home care services in the UK.
An investigation into standards in pupil referral units for children excluded from school.
How are whistleblowers who report unsafe care in the NHS treated?
What protection do small businesses have when banks treat them badly?
How a worldwide shortage of organs is fuelling a dangerous trade in transplant tourism.
An expose of firms offering to produce fake papers to enable migrants to get into the UK.
The plight of unaccompanied child migrants arriving in Greece. Is the EU doing enough?
Is the UK doing enough to tackle corruption and prevent money laundering in the capital?
Are local councils doing enough to provide accommodation for the homeless?
Are foreign domestic workers the forgotten victims of modern slavery in Britain?
Holding back the tide: will the UK keep its renewable energy promises?
As the scandal over the collapse of BHS rumbles on, how safe is your pension?
Have major changes to the probation system put the public at risk?
Is the UK's alternative investment market, known as 'little brother', open to fraud?
Are allegations of sex crimes made by elderly victims being ignored?
Has care for people with learning disabilities improved since Winterbourne View?
'High way' to hell: File on 4 investigates the lethal highs coming to the UK from China.
Why were children injected with a so-called truth serum at Aston Hall Hospital?
Is the UK putting trade above concerns about human rights in the United Arab Emirates?
New revelations about structural problems in schools and hospitals built under PFI schemes
Is the scheme that allows council tenants to buy their own homes open to fraud and abuse?
What will it take to improve failing children's services - and is change fast enough?
How will the new Cancer Drugs Fund cope with the challenges of rising cost and demand?
Should English football clubs take a closer look at who they turn to for investment?
Thomas Bourke has served more than 20 years for murder, but is his conviction safe?
Do the plans to recruit more armed police go far enough? Danny Shaw investigates.
Did UK firms win multi-million pound oil contracts through bribes to corrupt officials?
Simon Cox reveals more allegations about match-fixing in tennis.
With applications rising, is the UK's asylum process reaching crisis point?
Placing children with relatives is an alternative to adoption. But does it always work?