In Williams v Hull [2009] EWHC 2844 (Ch) Arnold J upheld the 'without prejudice' status of a letter, deciding also that the 'unambiguous impropriety' exception did not apply notwithstanding a serious risk of perjury. The 'without prejudice' rule blocks evidence of negotiations forming a genuine attempt to settle a dispute from being admissible in proceedings, subject to certain 'exceptions', including where exclusion of the evidence would act as a cloak for perjury, blackmail or other 'unambiguous impropriety'. For information on this case and guidance in relation to without prejudice privilege, click here. For other recent developments on the without prejudice rule, please see our e-bulletins dated 22 September 2009 and 25 June 2009.