8(1)Rules may make provision—
(a)for the carrying-out by the tribunal of a preliminary consideration of proceedings (a “pre-hearing review”); and
(b)for enabling such powers to be exercised in connection with a pre-hearing review as may be specified.
(2)If rules make provision of the kind mentioned in sub-paragraph (1), they may also include—
(a)provision for security; and
(b)supplemental provision.
(3)In sub-paragraph (2) “provision for security” means provision authorising a tribunal carrying out a pre-hearing review under the rules, in specified circumstances, to make an order requiring a party to the proceedings, if he wishes to continue to participate in them, to pay a deposit of an amount not exceeding such sum—
(a)as may be specified; or
(b)as may be calculated in accordance with specified provisions.
(4)In sub-paragraph (2) “supplemental provision” means any provision as to—
(a)the manner in which the amount of such a deposit is to be determined;
(b)the consequences of non-payment of such a deposit; and
(c)the circumstances in which any such deposit, or any part of it, may be—
(i)refunded to the person who paid it; or
(ii)paid to another party to the proceedings.