19. For rule 4.11 substitute—
4.11.—(1) In carrying out his duty under section 7(1)(a) or section 41(2), the officer of the service shall have regard to the principle set out in section 1(2) and the matters set out in section 1(3)(a) to (f) as if for the word “court” in that section there were substituted the words “officer of the service”.
(2) The officer of the service shall make such investigations as may be necessary for him to carry out his duties and shall, in particular—
(a)contact or seek to interview such persons as he thinks appropriate or as the court directs;
(b)obtain such professional assistance as is available to him which he thinks appropriate or which the court directs him to obtain.
(3) In addition to his duties, under other paragraphs of this rule, or rules 4.11A and 4.11B, the officer of the service shall provide to the court such other assistance as it may require.
(4) A party may question the officer of the service about oral or written advice tendered by him to the court.”.