4.—(1) Where a billing authority makes a decision relating to the application or operation of these Regulations in relation to an individual, the authority shall, if requested in writing by the person so affected, provide him with a written statement of its decision and the reason for it; and any such statement shall be sent within 14 days from the date on which it is requested or as soon as is reasonably practicable thereafter.
(2) No appeal may be made to a valuation tribunal in respect of any decision of a billing authority relating solely to the application or operation of these Regulations; but a person aggrieved by such a decision may appeal to a review board appointed by the billing authority and constituted as mentioned in regulation 70(3) of the Benefit Regulations.