Section 5(1) of the Libel and Slander Act provides the notice requirement for an action in libel in a newspaper:
No action for libel in a newspaper or in a broadcast lies unless the plaintiff has, within six weeks after the alleged libel has come to the plaintiff’s knowledge, given to the defendant notice in writing, specifying the matter complained of, which shall be served in the same manner as a statement of claim or by delivering it to a grown-up person at the chief office of the defendant.
In John v. Ballingall, the Court reiterated that the day on which a plaintiff must give notice under s. 5(1) and bring an action under s. 6 begins to run when the libel comes to the knowledge of the person defamed.