19.12.—(1) Where the court is considering whether to make a costs order in favour of or against a person who is not a party to proceedings, that person must be—
(a)added as a party to the proceedings for the purposes of costs only;
(b)served with such documents as the court may direct; and
(c)given a reasonable opportunity to attend any hearing at which the court will consider the matter further.
(2) This rule does not apply where the court is considering whether to make an order against the Lord Chancellor in proceedings in which the Lord Chancellor has provided legal aid to a party to the proceedings.