165.—(1) Subject to paragraph (2), written notice of appeal against a determination on an issue of a medical nature stating—
(a)the appellant (P)’s name and address; and
(b)the grounds of the appeal,
must be given to the scheme manager within 28 days of the date on which P receives the documents referred to in regulation 164(4) (appeals against determinations based on medical evidence); and where P receives those documents on different dates, they are to be treated for this purpose as received on the later or latest of those dates.
(2) Where—
(a)notice of appeal is not given within the period specified in paragraph (1); but
(b)the scheme manager is of the opinion that P’s failure to give it within that period was not due to P’s own default,
the scheme manager may extend the period for giving notice for such length, not exceeding six months from the date mentioned in paragraph (1), as the scheme manager considers appropriate.