21.6—(1) The court may make an order appointing a litigation friend.
(2) An application for an order appointing a litigation friend may be made by—
(a)a person who wishes to be the litigation friend; or
(b)a party.
(3) Where—
(a)a person makes a claim against a child or patient;
(b)the child or patient has no litigation friend;
(c)the court has not made an order under rule 21.2(3) (order that a child can act without a litigation friend); and
(d)either—
(i)someone who is not entitled to be a litigation friend files a defence; or
(ii)the claimant wishes to take some step in the proceedings,
the claimant must apply to the court for an order appointing a litigation friend for the child or patient.
(4) An application for an order appointing a litigation friend must be supported by evidence.
(5) The court may not appoint a litigation friend under this rule unless it is satisfied that the person to be appointed complies with the conditions specified in rule 21.4(3).