13. Rules 10 to 44 (except rule 33) of the principal Rules shall apply to all subsequent proceedings on the application as they apply to proceedings instituted by a notice of reference under the principal Rules, with the necessary modifications, and in particular as if—
(a)references to an agreement were references to the class of goods to which the application relates; and
(b)references to section 10(1) or 19(1) of the Restrictive Trade Practices Act 1976 were references to section 14 of the Act.
14. An application for the making of a representation order (where no such order was made on the hearing of the preliminary application for directions) or for the revocation or modification of a representation order (whenever made) may be made at any time before the final hearing—
(a)by the applicant under section 16(1) of the Act; or
(b)by the Director; or
(c)by any respondent or any member of a class represented by a representative respondent,
and on the hearing of the application the Court may make any order which it could have made under rule 9(b) or, as the case may require, may revoke or modify the representation order, and shall give all such consequential directions as it considers necessary.
15.—(1) Where the applicant or a respondent is a trade association consisting of or including suppliers or retailers, as the case may be, the Director may apply for an order for discovery under rule 28(1) of the principal Rules or for an order for an investigation under rule 29 of those Rules against any member of the association who supplies or retails any goods to which the application relates under arrangements for maintaining minimum prices on resale; and on the hearing of the application for directions mentioned in rule 22 of the principal Rules the Court may give directions for discovery of documents by any such member or for an investigation of the cost incurred by him in producing, supplying or retailing any goods or in applying any process of manufacture to goods.
(2) In the application of this rule to proceedings in Scotland, for the reference to rule 28(1) of the principal Rules there shall be substituted a reference to rule 28(2) of those Rules, and for any reference to discovery of documents there shall be substituted a reference to recovery of documents under a commission and diligence.