(1) This section applies to a watch-house officer only if the commissioner is satisfied the watch-house officer—(a) has the necessary experience or expertise to be able to take DNA samples; or(b) has satisfactorily completed a course of training approved by the commissioner for the purpose.
(2) The commissioner may authorise the watch-house officer to take DNA samples from—(a) a person in custody at a watch-house; or(b) a person who reports to the watch-house to enable a police officer to take the person’s identifying particulars under an identifying particulars notice or an order of a court.
(3) Also, sections 516 and 517 apply to the watch-house officer while performing the functions of a qualified person for taking a DNA sample.