(1) Subject to paragraphs (2) to (4), an appeal under regulation 99 is to be made to the tribunal before -
(a) the end of the period of 30 days beginning with the date of the notice notifying the decision to which the appeal relates; or
(b) if later, the end of the relevant period (within the meaning of regulation 96).
(2) In a case where the Commissioners are required to undertake a review under regulation 95 -
(a) an appeal may not be made until the conclusion date; and
(b) any appeal is to be made within the period of 30 days beginning with the conclusion date.
(3) In a case where the Commissioners are requested to undertake a review in accordance with regulation 97 -
(a) an appeal may not be made -
(i) unless the Commissioners have notified the person concerned ("P") as to whether or not a review will be undertaken; and
(ii) if the Commissioners have notified P that a review will be undertaken, until the conclusion date;
(b) any appeal where sub-paragraph (a)(ii) applies is to be m
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