Defamation Act 1992

(1) The Act provides protection from defamation liability for innocent disseminators that have no actual knowledge of the defamatory content complained of (Section 21).  Any person who has published the matter that is the subject of defamation proceedings solely in the capacity of, or as the employee or agent of, a processor or a distributor, it is a defence if that person alleges and proves that:  (a) that person did not know that the matter contained the material that is alleged to be defamatory; and  (b) that person did not know that the matter was of a character likely to contain material of a defamatory nature; and  (c) that person's lack of knowledge was not due to any negligence on that person's part.

(2) Online content hosts may be protected from liability in defamation if they comply with the complaints provisions under the Harmful Digital Communications Act 2015 (see above).