23.—(1) The Secretary of State may supersede a decision in respect of which—
(a)there has been a relevant change of circumstances since the decision to be superseded had effect or, in the case of an advance award under regulation 32, 33 or 34 of the Claims and Payments Regulations 2013, since it was made; or
(b)it is expected that a relevant change of circumstances will occur.
(2) The fact that a person has become terminally ill is not a relevant change of circumstances for the purposes of paragraph (1) unless an application for supersession is made which contains an express statement that the person is terminally ill.