A research team, led by Dr Judith Aldridge at the University of Manchester, has found evidence which directly contradicts the core assumptions of government policy on gang and knife crime. Based on two years’ work with members of six gangs in an English city, the research finds that in reality, gangs are loose, messy, changing friendship networks – less organised and criminally active than widely believed – with shifting and unstable leadership. The guardian has published podcast interview online with the researcher. here