If you are arrested you have the right to know why. If you are not being arrested you don’t have to go to the police station. If you do go to a police station voluntarily you are entitled to make a phone call to a relative or friend telling them where you are. You are also entitled to free legal advice from a solicitor and to leave at any time you wish.
You can be arrested and taken into custody with or without a warrant. When you are taken to a police station you’ll be questioned although this will be postponed if you’re drunk or disorderly. You must give the police your name and address but you do not have to answer any further questions, although this may count against you in court if you go to trial.