If you feel that you have been treated unfairly by the police, then you should be careful what you say when you are arrested or questioned. Ask to talk to a lawyer, and explain to the lawyer that you are unsure about the legal position regarding warrants. The law is complicated, and you should not attempt to resolve these issues yourself. This is one area where expert legal advice is essential to avoid misunderstandings and complications. Find some expert search warrant solicitor firms, like this one: http://search-warrants.com
If you cannot afford to pay for your own lawyer, you may be able to get one appointed for you or get legal aid, and they will still work to represent you as well as possible to ensure justice is done.