(1)An appeal under section 101 must be made by giving notice of appeal to the registrar.
(2)The notice must be given before the end of the period of 28 days beginning with the relevant day.
(3)But the registrar may allow an appeal to be made after the end of the period mentioned in subsection (2) if satisfied that there are good reasons for a failure to give notice before the end of that period (and for any delay in giving notice out of time).
(4)In subsection (2) “relevant day” means—
(a)in the case of a decision mentioned in section 101(1)(a) or (b), the day on which notice of the decision is given under section 89,
(b)in the case of a decision mentioned in section 101(1)(c), the day on which notice of the decision is given under section 94, and
(c)in the case of a decision mentioned in section 101(1)(d), the day on which notice of the decision is given under section 96.