306Third-party notice—filing

306 Third-party notice—filing (1) Unless the court gives leave, a third-party notice— (a) must not be filed by a defendant until the defendant has filed a defence; and (b) must be filed not later than 28 days after the end of whichever of the following periods ends last: (i) the time limited for filing the defence of the defendant who is filing the third-party notice (the prescribed period); (ii) if the plaintiff agrees to an extension of the prescribed period—the agreed period. (2) The defendant must serve a stamped copy of an application for leave under subrule (1) to file a third-party notice on— (a) the plaintiff; and Rule 307 (b) each other active party who has filed a notice of intention to (3) If the court gives leave under subrule (1) to the defendant to file a third-party notice, it may give directions about filing and serving the