File on 4 Investigates

New NHS research has revealed the shocking toll of preventable deaths caused by just one medical condition. Diabetes - in which the body fails to control blood sugar levels safely - is causing 24,000 needless deaths a year in England alone.

It's not just the old and middle-aged who are at risk. Young women with diabetes are 6 to 9 times more likely to die than their age group overall. And many more young people who don't die will develop life threatening diseases later due to failure to manage their blood sugar.

Badly controlled diabetes can lead to kidney disease, heart conditions, or blindness. It's also the cause of 5,000 amputations a year, mainly of legs or feet. With around 3 million diagnosed sufferers known to the health service, diabetes is said to be costing the NHS £9 billion a year, about a tenth of the total health budget.

Julian O'Halloran reveals why, despite Government pledges, it's so difficult to get to grips with the disease. And, with the incidence of diabetes rocketing, he asks whether the NHS can cope.

Producer - Gail Champion.

With the EU poised to ban oil imports from Iran, Allan Urry assesses the impact of international sanctions on Britain and Europe.

Designed to curb Iran's nuclear programme, the oil embargo could further push up the cost of fuel.

Iranian companies are involved in a number of joint ventures that bring energy into European homes and factories: File on 4 examines what will happen to these vital projects as the new round of trade restrictions begins to bite.

And British companies that trade legitimately with Iran are already finding it harder to do business. They warn that it could lead to job losses.

How will the sanctions affect Europe at a time when many economies are in recession or are just stagnating?

Dutch and American scientists have succeeded in mutating a deadly bird-flu virus to make it easily transmissible to humans. If it got out, it could start a fatal epidemic. They keep it securely locked away in their laboratories, but want to publish the biological recipe for making it. In an unprecedented move, the U.S. government is pressing them to keep the details of their experiments secret for fear that bio-terrorists could use the organism to kill hundreds of millions of people.

Inquests in England are increasingly hearing a new term to explain deaths in police custody: Excited Delirium. It's a diagnosis with origins in the United States, where it has been associated with consumption of massive doses of cocaine. People with ED are said to possess super-human strength and to be largely impervious to pain. They behave bizarrely, sometimes destructively.They often seem paranoid and frequently resist arrest. As police struggle to restrain them they overheat and die.

But critics -- including some British Pathologists -- point out that Excited Delirium is not recognised by the World Health Organisation and that there is a lack of valid research. Civil liberties organisations fear that the diagnosis might be employed to excuse improper use of restraint techniques by police.

For 'File on 4' Angus Stickler has travelled to the cocaine capital of the United States, Miami, where police and scientists are attempting to define and deal with the controversial condition.

And in England he speaks to families whose loved ones have died after being restrained by the police. Is Excited Delirium well-enough understood to be used by courts? And just how many people are dying while being restrained -- either in custody or while being arrested? Are the official figures reliable?

Jenny Cuffe talks to foster parents who find themselves battling with local authorities over the children in their care. They describe a Kafkaesque nightmare where doors are shut, telephone calls and emails unanswered, even court orders are ignored. Meanwhile, vulnerable children are treated as pawns as social workers move them from one place to another.

In one case investigated by File on 4, foster parents who offered to care for four siblings were denied the financial and practical support they needed from the council. Their official complaints were upheld yet key recommendations continued to be ignored and, as a consequence, the children have now been split up. After giving up their jobs to care for the children, the couple are now in debt and have to sell their home. The local MP describes the council's treatment of the family as outrageous. He says the case is extreme but not unusual and he's called for an enquiry.

A recent report identified a shortage of foster carers in the UK but are some councils driving away the people who should be their best resource?

Producer: Sally Chesworth.

Are families getting justice in the coroner's court?

With plans for future use of London's Olympic stadium in disarray, Allan Urry asks whether taxpayers' billions will leave a lasting legacy from 2012.

London's successful bid to stage the 2012 Olympics placed great emphasis on the benefits it could create for Britain and its capital city. Not only should the Games bequeath impressive new sporting facilities to the people of London, but the event and its aftermath was expected to kick-start economic development in the East End -- still one of the least prosperous parts of the country.

Has the forward planning paid off? Controversy and confusion still shrouds the future ownership and operation of London's Olympic stadium. Despite bids from rival football clubs, the stadium remains in public ownership. The Olympic village meanwhile has been sold to developers at a loss to taxpayers, and some critics claim a major opportunity to embed a new science and technology research centre on the Olympic park has been squandered.

With mounting pressure on Games organisers and Government to recoup the taxpayers' investment in the Olympics, many Londoners fear that the early promises of economic regeneration for the East End will fail to materialise.

Reporter: Allan Urry

The Justice Secretary Ken Clarke wants more jobs for convicts. He told his party conference: "If we want prison to work, then our prisoners have got to be working". He encourages private companies to open workshops inside prisons, where inmates would be 'properly paid' for hard work, would pay their due of taxes and help fund victims' support.

World leaders preparing for the G20 conference are facing a threat to the global economy from the on-going Eurozone sovereign debt crisis. But as they try to avert further economic catastrophe some investors see opportunities to profit from the mayhem.

Michael Robinson reveals how on-going economic volatility and uncertainty can also present golden investment opportunities - and how, through complex trades, bets and investments, some find cash in the current crisis.

Producer: Gail Champion

Earlier this year, an imam working in Stoke-on-Trent was jailed for raping a 12 year old boy at his mosque. In the wake of the case, File on 4 investigates whether the thousands of children who visit mosques and madrassas each week to study the Quran are being properly protected.

The leader of the Muslim Parliament of Great Britain has warned that without urgent action, his religion could face an "avalanche" of historic cases similar to the ones which have swamped the Roman Catholic church. Already, several other abusers whose crimes remained undetected for decades have been brought to court.

How can parents be sure their children are safe in unregulated madrassas where no-one ensures proper criminal record checks are made on staff and volunteers? And should the ban on corporal punishment in schools be extended to cover madrassas when some children still face physical punishment?