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?
Has a drive to increase the diagnosis of dementia and find a cure been effective?
Are relations between Sunni and Shia Muslims in the UK being strained by tensions abroad?
Could York learn from its Dutch counterpart about flood protection?
Are people damaged by vaccines being short-changed by the government?
File on 4 investigates the collapse of one of the NHS's biggest healthcare contracts.
Have the tennis authorities done enough to investigate allegations of match-fixing?
Allan Urry investigates claims of dirty tricks in one of Britain's biggest police forces.
British people smugglers: inside the trade in bringing illegal immigrants into the UK.
How safe are we in the hands of the growing number of agency staff at NHS hospitals?
The UK is giving a billion pounds of aid to Syrian refugees. But is it being well spent?
A lasting legacy? Have the sexual abuse revelations blighted Rotherham in the longer-term?
With millions of new apprenticeships promised, how will cash-strapped FE colleges deliver?
The role of British companies in a billion-dollar Moldovan bank scam.
Allan Urry investigates why the NHS is running short of some life-saving medicines.
Simon Cox meets migrants working in Britain illegally.
Under fire over controversial decisions, is the Crown Prosecution Service up to the job?
Jane Deith investigates conditions for tea workers in Assam.