15.—(1) Before determining an application, the tribunal must take all reasonable steps to ensure that each of the parties is supplied with—
(a)a copy of any document relevant to the proceedings (or sufficient extracts from or particulars of the document) which has been received from any other party or from an interested person (other than a document already in his possession or one of which he has previously been supplied with a copy); and
(b)a copy of any document which embodies the results of any relevant enquiries made by or for the tribunal for the purposes of the proceedings.
(2) At a hearing, if a party has not previously received a relevant document or a copy of, or sufficient extracts from or particulars of, a relevant document, then unless—
(a)that person consents to the continuation of the hearing; or
(b)the tribunal considers that that person has a sufficient opportunity to deal with the matters to which the document relates without an adjournment of the hearing,
the tribunal must adjourn the hearing for a period which it considers will give that person a sufficient opportunity to deal with those matters.