manchester was just the first place that katya was exploited. later sold to other criminals and taken to wales -- the price just 2,000 pounds. some of those trafficked can make 10's of thousands of pounds and a crime fighting agency believes it's happening in towns throughout the u.k. >> each victim generates an income for their abuser in the region of 93,000 pounds a year, so if you have an asset that's worth to you 93,000 pounds, you're not going to easily let it go, and they use physical violence. >> the home office believes that there are around 4,000 victims of sex trafficking in the u.k. but that's a rough estimate. the actual figure is simply unknown. many are reluctant to go to court, but earlier this summer, katya did give evidence and saw the people who trafficked her jailed for the crime. victims often feel isolated and alone. traffickers rely on that confusion and fear to keep them hidden in the shadows. chris buckler, bbc news, manchester. ♪ >> hello and welcome. >> see the news unfold. go to bbc.com/news. it's easy. click here to w

manchester was just the first place th katya was exploited.ater sold to other iminals and taken to wales -- e pri just 2,000 pounds. so ofhose trafficked can ma 10's of thousands of punds d a crime fhting agency believes it'sappening in towns throughout the u.k >> eachictim generates an incomeor their abuser in the region of 93,000 pounds a year, so if you have an asset that's worth toou 93,000 pounds you' not going toasily let it go, and they use physica violen. >> thehome officebelieves that there are around 4,000 victims of sex traicking in the u.k. but that's a rough estimate. the actu fige isimply unknown. many are reluctant to goo court, but earer this summer, katya did give evidence and saw the peoe who tfficked her jailed for ecrime. victimoften feel isolated ad alon traffickers ry on that confusion and fearo keep them hien inthe shadows. chrisbuckler, bbc new manchester. ♪ >> hel and welcome. >> see the news unfold. to bbc.com/news. it's easy. click here to watch the one-minute wor news video summy. you can re the latest headnes. get