In England and Wales, the custody officer must make a decision to authorise or refuse the detention of any detainee presented before him. This also applies to detainees presented before them by other public servants with power of arrest who may use the suite from time to time, for example Revenue & Customs officers and Immigration officers. The officer presents the arrested person to the custody officer and explains the circumstances of the arrest, with further detention of the person being authorised if the custody officer deems it necessary to do so. It is not the custody officer's duty to determine whether the arrest was lawful or not, Code G of PACE states that this duty rests on the arresting officer.