8.—(1) Where either party to the appeal intends to submit written evidence or a written statement at an interview held under paragraph 4, the party shall, subject to sub-paragraph (2), submit it to the independent medical referee and to the other party not less than 7 days before the date appointed for the interview.
(2) Where any written evidence or statement has been submitted under sub-paragraph (1) less than 7 days before the date appointed for the interview, any written evidence or statement in response may be submitted by the other party to the independent medical referee and the party submitting the first-mentioned evidence or statement at any time up to, and including, that date.
(3) Where any written evidence or statement is submitted in contravention of sub-paragraph (1), the independent medical referee may postpone the date appointed for the interview and require the party who submitted the evidence or statement to pay such reasonable costs of the independent medical referee and of the other party as arise from the postponement.