File on 4 reveals how hundreds of vulnerable women and children are being trafficked to the UK by organised crime gangs to work as shoplifters. The victims are forced to live in squalor in overcrowded houses in England, Scotland and Northern Ireland. Investigators have discovered there are 154 known members of one gang which is making millions for the gangmasters from Eastern Europe. High street stores have reported a 25 per cent increase in the number of shoplifting incidents over the last year. Reporter: Datshiane Navanayagam Producers: Holly Clemens and Kate West Editor: Carl Johnston