Right to make representations
5.—(1) The adjudicator may require the attendance of any person (including a party to the proceedings) as a witness, at a time and place specified by him, at the hearing of an appeal and require him to answer any questions or produce any documents in his custody or control which relate to any matter in the proceedings.
(2) A person in respect of whom a requirement has been made under sub-paragraph (1) may apply to the adjudicator to vary or set aside the requirement.
(3) A person shall not be bound to comply with a requirement under sub-paragraph (1) unless he has been given at least 7 days' notice of the hearing or, if less than 7 days, he has informed the adjudicator that he accepts such notice as he has been given.
(4) A person shall not be bound to comply with a requirement under sub-paragraph (1) unless the necessary expenses of his attendance are paid or tendered to him.
(5) No person shall be required to give any evidence or produce any documents under sub-paragraph (1) which he could not be required to give or produce in the trial of an action in a court of law.