9.—(1) With the leave of the Tribunal, the appellant may amend his notice of appeal or deliver supplementary grounds of appeal.
(2) Rule 6(1) above and rule 11(1)(a) below apply to an amended notice of appeal and to supplementary grounds of appeal provided under paragraph (1) above as they do to a notice of appeal.
(3) Upon receipt of a copy of an amended notice of appeal or amended grounds of appeal under rule 6(1) above, the relevant Minister may amend his notice in reply and, in the case of an appeal under section 28(6) of the Act, the respondent data controller may amend his reply to the notice of appeal.
(4) An amended notice or reply under paragraph (3) above must be sent to the Tribunal within 28 days of the date on which the copy referred to in that paragraph is received.
(5) Without prejudice to paragraph (3) above, and with the leave of the Tribunal–
(a)the relevant Minister may amend a notice in reply, and
(b)the respondent data controller may amend a reply to the notice of appeal.
(6) Rule 7(3) above and rules 11(1)(b) and 12(1)(a) below apply to an amended notice in reply by the relevant Minister provided under paragraph (3) or (5) above as they do to a notice in reply.
(7) Rule 8(3) and (4) above and rules 11(1)(c) and 12(1)(b) below apply to an amended reply by the respondent data controller provided under paragraph (3) or (5) above as they do to a reply.