If you believe you are being wrongfully arrested, try to remain calm throughout the procedure. It can be emotionally distressing; however, it is best to stay calm and level-headed.
Anyone who is arrested must be told by the police why they have been detained. If you are arrested, the police can only detain you for a maximum of 24 hours. The Court does have the power to extend this to 96 hours for a more serious arrestable offence.
When you are taken to a police station, you have a legal right to contact a solicitor and speak to them in private. You should communicate with your solicitor about what has happened. From here, you can later decide whether to file a complaint or pursue a claim for compensation.