(4) Subject to section 25, if an individual withdraws consent to the collection, use or disclosure of personal data about the individual by an organisation for any purpose, the organisation shall cease (and cause its data intermediaries and agents to cease) collecting, using or disclosing the personal data, as the case may be, unless such collection, use or disclosure, as the case may be, without the consent of the individual is required or authorised under this Act or other written law.