Any appeal under paragraph 10 must be made within the period of 21 days beginning with the date on which the improvement notice was served in accordance with Part 1 of this Schedule.

Any appeal under paragraph 13 must be made within the period of 28 days beginning with the date specified in the notice under paragraph 6 or 8 as the date on which the decision concerned was made.

F1the appropriate tribunal may allow an appeal to be made to it after the end of the period mentioned in sub-paragraph (1) or (2) if it is satisfied that there is a good reason for the failure to appeal before the end of that period (and for any delay since then in applying for permission to appeal out of time).