During the 2012 riots there were reports of detainees refusing to tell the police their names when arrested. As they had no identification on them they were held in custody until they could be brought before the magistrates the following day. In court they also refused to disclose their name and address. However, they were subsequently released on bail pending a trial date. How the summons was issued I have no idea.
Is it not contempt of court to refuse to give your name and address? If so, would the penalty be prison, given the fact you are unlikely to be located again to pay a fine?