100.—(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 made within the period of 30 days beginning with the conclusion date; and
(c)if the Commissioners have notified P that a review will not be undertaken, an appeal may be made only if the tribunal gives permission to appeal.
(4) In a case where regulation 98(8) applies, an appeal may be made at any time from the end of the period specified in regulation 98(6) to the date 30 days after the conclusion date.
(5) An appeal may be made after the end of the period specified in paragraph (1), (2)(b), 3(b) or (4) if the tribunal gives permission to appeal.
(6) In this regulation, “conclusion date” means the date of the notice notifying the conclusions of the review.