28.3—(1) The matters to be dealt with by directions under rule 28.2(1) include—
(a)disclosure of documents;
(b)service of witness statements; and
(c)expert evidence.
(2) If the court decides not to direct standard disclosure, it may—
(a)direct that no disclosure take place; or
(b)specify the documents or the classes of documents which the parties must disclose.
(Rule 31.6 explains what is meant by standard disclosure)
(Rule 26.6(5) deals with limitations in relation to expert evidence and the likely length of trial in fast track cases)