25. Where—
(a)the superseding decision is not advantageous to the claimant; and
(b)there has been a universal credit decision where the Secretary of State is satisfied that, in relation to a limited capability for work determination, the claimant—
(i)failed to notify an appropriate office of a change of circumstances which the claimant was required by regulations under the Administration Act to notify; and
(ii)could not reasonably have been expected to know that the change of circumstances should have been notified,
the superseding decision takes effect on the first day of the assessment period in which the Secretary of State makes that decision.