The law says you must tell the police your name and current contact details. However, if you are arrested you should immediately ask for a solicitor or lawyer.
Refusing to answer questions or saying the wrong thing may cause problems later in court so you should have a solicitor present to give you advice before you speak. The duty solicitor is free while you are in the police station.
You also have the right to have one phone call made on your behalf. Use the phone call to contact a friend or relative to let them know what has happened.
If you are summoned to appear at court - it is very important you attend.