Watch Hunting Britain's Most Wanted (2011) Online

The expansion of the EU and open borders in the UK has led to a surge in foreign criminals heading for Britain. The number of requests for wanted fugitives has risen ten-fold over the past five years and now totals more than 4,300 a year. Follow the New Scotland Yard's Extradition Unit as they go about their work - tracking down murderers, suspected rapists and armed robbers from abroad to send them back to face justice.