The nature of crime is changing, with much of it now happening online, sparking growing concern that official figures fail to account for potentially millions of fraud offences. Experts say frauds involving plastic debit and credit cards are among the crimes left out of the data. So just how reliable - and useful - are the statistics? At the same time, police economic crime units, which investigate fraud, have become increasingly stretched, partly as a result of government budget cuts. BBC Home Affairs correspondent, Danny Shaw, asks whether law enforcement has kept pace with the changing face of fraud and if there are enough resources to tackle financial crime and bring fraudsters to justice. Reporter: Danny Shaw Producer: Ian Muir-Cochrane.