This section has no associated Explanatory Memorandum
21. Except in a case to which paragraph 22 or 31 applies, where the superseding decision is advantageous to the claimant and the change of circumstances was notified to an appropriate office after the end of the assessment period in which the change occurred or after the expiry of such longer period as may be allowed under regulation 36 (effective dates for superseding decisions where changes notified late), the superseding decision takes effect from the first day of the assessment period in which the notification was given.