A report by an Assembly Member in London stated that there were 389 cases of human trafficking identified by London’s Metropolitan Police between January to October 2013. Out of those cases, 36, or 9 percent, were picked up by the police.
In total, 39 percent of all human trafficking cases identified in Britain was located in the city of London.
The Metropolitan Police has carried out 146 investigations into human trafficking and has charged 282 people between April 2010 and October 2013.
Source: “Met picked up 9% of human trafficking victims, report says,” BBC News, October 13, 2013.