(1) If a volunteer, or parent or guardian of a volunteer, expressly withdraws consent to the carrying out of a forensic procedure under this Part (or if the withdrawal of such consent can reasonably be inferred from the volunteer's, parent's or guardian's conduct) before or during the carrying out of the forensic procedure--(a) the forensic procedure is to be treated from the time of the withdrawal as a forensic procedure for which consent has been refused, and(b) the forensic procedure is not to proceed except (in the case of a child or incapable person) by order of a Magistrate under section 80.
(2) If, after the carrying out of a forensic procedure under this Part on a volunteer, the volunteer, or the parent or guardian of the volunteer, expressly withdraws consent to retention of the forensic material taken or of information obtained from the analysis of that material, the forensic material and any information obtained from analysis of the material is, subject to any order made under section 81, to be destroyed as soon as practicable after the consent is withdrawn.
(3) A police officer may request, but cannot require, a volunteer, or a parent or guardian of a volunteer, who withdraws consent to the carrying out of a forensic procedure under this Part to confirm the withdrawal of consent in writing.