20.—(1) A party who wishes to call a witness at a hearing must make a written application to the Board, a copy of which must be served on the other party, within 20 weeks of the case being referred to the Board.
(2) A written application to call a witness must—
(a)include the witness’s name, address and occupation, and
(b)explain why the party wishes to call the witness.
(3) The member appointed by the Board chair for this purpose, being a panel chair, or duty member may determine an application to call a witness and must communicate this decision to the parties.
(4) The member appointed under paragraph (3) must give reasons in writing for any refusal to call a witness.
(5) Where—
(a)a member of the oral panel intends to call a witness, or
(b)the single member appointed under rule 5(1) has made directions to call a witness under rule 14(5), the member appointed by the Board for this purpose must notify the parties in writing within 21 weeks of the case being referred to the Board.
(6) Written notification from the member that it intends to call a witness must—
(a)include the witness’s name, address and occupation, and
(b)explain why the witness is being called.
(7) Where a witness is called under these Rules, it is the duty of —
(a)the party calling the witness in respect of a witness called by virtue of an application under paragraph (1), and
(b)the member of the Board appointed for this purpose in respect of a witness called under paragraph (5),
to notify the witness at least 2 weeks before the hearing of the date, time and place of the hearing and the need to attend.