22.—(1) The information listed in paragraphs 6, 8 and 9 of Schedule 7 must be given to a person in accordance with paragraph (2) where—
(a)the amount of benefit payable to the person alters, and
(b)that alteration is not made in accordance with the provisions referred to in paragraph 7(b) of Schedule 7.
(2) The information must be given before the date on which the decision to alter the benefit takes effect, where practicable and in any event within one month of that date.