11.—(1) Where the valuation officer is of the opinion that a proposal has not been validly made, he may within six weeks of its service on him serve notice on the person making the proposal that he is of that opinion, and stating
(a)his reasons for that opinion, and
(b)the effect of paragraph (2).
(2) Within four weeks of the service on him of a notice under paragraph (1), the person making a proposal may if he disagrees with the valuation officer about the validity of the proposal appeal to a valuation and community charge tribunal.
(3) An appeal under this regulation shall be initiated by serving notice of disagreement on the valuation officer.
(4) Unless the valuation officer withdraws his notice under paragraph (1) within four weeks of its issue, on the expiry of that period he shall transmit to the clerk of the relevant valuation and community charge tribunal notification of the contents of the proposal, together with the reasons for his opinion that it has not been validly made.
(5) Until in pursuance of an appeal under this regulation it is finally decided that the proposal was validly made, regulations 12 to 16 shall not apply in relation to such a proposal; and where it is so decided, those regulations shall have effect as if the proposal had been served on the valuation officer on the date of that final decision.
(6) An appeal is finally decided for the purposes of paragraph (5) on the day on which
(a)the valuation and community charge tribunal has determined the appeal, and the period within which an appeal may be made to the Lands Tribunal under regulation 45 has expired without such an appeal being made, or
(b)the Lands Tribunal has determined the appeal.
(7) Anything done under this regulation shall not be construed as preventing any party to an appeal under regulation 16 from contending for the purposes of that appeal that the proposal to which the appeal relates was not validly made.