(1) This rule applies--(a) to a defence of absolute privilege under Division 3 of Part 3 of the Defamation Act 1974 or under section 27 of the Defamation Act 2005 , and(b) to the defence of absolute privilege at common law.
(2) A defence to which this rule applies is sufficiently pleaded if it alleges that the matter complained of was published under absolute privilege.