Under English law, police have the right to arrest under a warrant issued by a magistrate, and following conditions set out in PACE Code G. Or without a warrant, police may make an arrest pursuant to the Police and Criminal Evidence Act 1984:Police and Criminal Evidence Act 1984 'anyone who is about to commit, is committing or has committed an offence or is so suspected on reasonable grounds may be arrested.' Also, arrest may be lawful if the police have reason to believe that the person arrested poses an imminent risk of harm to themselves or others. Private citizens can also make an arrest for crimes being committed/that have been committed but only in relation to indictable offences ('citizen's arrest'). When a prisoner is lawfully held, it is not false imprisonment just because the conditions are unsanitary such as in the case of R v Deputy Governor of Parkhurst Prison,R v Deputy Governor of Parkhurst Prison ex p Hague [1992] 1 AC 58 (HL) 'although this may instead be found to be negligence or the tort of misfeasance in a public office.'
