3.12.—(1) This rule applies to a party’s preparation for trial or appeal, and in this rule and rule 3.13 ‘trial’ includes any hearing at which evidence will be introduced.
(2) In fulfilling the duty under rule 3.3, each party must―
(a)comply with directions given by the court;
(b)take every reasonable step to make sure that party’s witnesses will attend when they are needed;
(c)make appropriate arrangements to present any written or other material; and
(d)promptly inform the court and the other parties of anything that may―
(i)affect the date or duration of the trial or appeal, or
(ii)significantly affect the progress of the case in any other way.
(3) The court may require a party to give a certificate of readiness.