(1) This section applies to an oral hearing before an adjudicator.

(2) An adjudicator may, by notice, in writing -

(a) summon a witness to appear to give evidence, or to produce before the adjudicator any books, documents or records in such person's power or control, or to do both, and

(b) require the witness to attend an oral hearing from day to day unless excused, or released from further attendance, by the adjudicator.

(3) An adjudicator may require evidence to be given on oath or affirmation, and may for that purpose -

(a) require a witness to take an oath or affirmation, and

(b) administer an oath to the witness orally or permit the witness to affirm.

(4) The oath or affirmation to be taken by a witness for the purposes of this section is an oath that the evidence the witness will give shall be true.

(5) The adjudicator may allow a witness at the oral hearing to give evidence by tendering a written statement, provided such statement is verified on oath or affirmation.