We have given information in section 4 about the length of time for which we will keep your personal data in connection with some categories of processing/data. BU is undertaking a review of its retention policies and future versions of this Notice may contain amended retention periods (these are unlikely to be longer than the periods specified in section 4). Section 7 of this Notice contains information about your “right to be forgotten” (rights to erasure of your personal data) and how you can exercise them.