I had a terrible incident with an agency. I gave them a copy of my ID in good faith, and then when I left, they refused to take my pictures down and sent me threatening messages, where they threatened to contact my family, my university, etc and tell them what I was doing for a living. In the end, i had to contact the guys who made the website, and I also contacted the police (who were actually very understanding about it all). I also worked for another agency in London, where the owner demanded he 'test out' the goods. I shan't repeat what I said to him here, but it wasn't pretty. In my experiences, agencies are greedy, and very rarely give a damn about the girls.