“The "without prejudice" rule is a rule governing the admissibility of evidence and is founded upon the public policy of encouraging litigants to settle their differences rather than litigate them to a finish. It is nowhere more clearly expressed than in the judgment of Oliver L.J. in Cutts v. Head[1984] Ch. 290 , 306: "That the rule rests, at least in part, upon public policy is clear from many authorities, and the convenient starting point of the inquiry is the nature of the underlying policy. It is that parties should be encouraged so far as possible to settle their disputes without resort to litigation and should not be discouraged by the knowledge that anything that is said in the course of such negotiations (and that includes, of course, as much the failure to reply to an offer as an actual reply) may be used to their prejudice in the course of the proceedings. They should, as it was expressed by Clauson J. in Scott Paper Co. v. Drayton Paper Works Ltd. (1927) 44 R.P.C. 151 , 156, be encouraged fully and frankly to put their cards on the table.... The public policy justification, in truth, essentially rests on the desirability of preventing statements or offers made in the course of negotiations for settlement being brought before the court of trial as admissions on the question of liability." The rule applies to exclude all negotiations genuinely aimed at settlement whether oral or in writing from being given in evidence. A competent solicitor will always head any negotiating correspondence "without prejudice" to make clear beyond doubt that in the event of the negotiations being unsuccessful they are not to be referred to at the subsequent trial. However, the application of the rule is not dependent upon the use of the phrase "without prejudice" and if it is clear from the surrounding circumstances that the parties were seeking to compromise the action, evidence of the content of those negotiations will, as a general rule, not be admissible at the trial and cannot be used to establish an admission or partial admission. I cannot therefore agree with the Court of Appeal that the problem in the present case should be resolved by a linguistic approach to the meaning of the phrase "without prejudice." I believe that the question has to be looked at more broadly and resolved by balancing two different public interests namely the public interest in promoting settlements and the public interest in full discovery between parties to litigation.” (Emphasis added).
‘(1) The justification for the privilege attaching to without prejudice communications is not only the public policy of encouraging the negotiated settlement of disputes but also the express or implied agreement of the parties that such communications should be treated as confidential. (2) The fact that a document is marked "without prejudice" is not conclusive as to its status, although it is often a strong pointer. As a general rule a document marked "without prejudice" is privileged unless it was not written as part of a process of negotiation or with the intention of promoting compromise. The test for determining whether the privilege applies is an objective one. As Laddie J held in Schering v CIPLA: "The court has to determine whether or not a communication is bona fide intended to be part of or to promote negotiations. To determine that, the court has to work out what, on a reasonable basis, the intention of the author was and how it would be understood by a reasonable recipient". (3) Once a communication is covered by without prejudice privilege, the court is slow to lift the cloak of that privilege unless the case for doing so is absolutely plain. There are certain exceptional circumstances where it may be permissible to admit into evidence without prejudice communications which are privileged.’
“…Many of the alleged exceptions to the rule will be found on analysis to be cases in which the relevance of the communication lies not in the truth of any fact which it asserts or admits, but simply in the fact that it was made. Thus, when the issue is whether without prejudice letters have resulted in an agreed settlement, the correspondence is admissible because the relevance of the letters has nothing to do with the truth of any facts which the writers may have expressly or impliedly admitted. They are relevant because they contain the offer and acceptance forming a contract which has replaced the cause of action previously in dispute.”
‘Nevertheless, there are numerous occasions on which, despite the existence of without prejudice negotiations, the without prejudice rule does not prevent the admission into evidence of what one or both of the parties said or wrote. The following are among the most important instances. (1) As Hoffmann L.J. noted in Muller's case, when the issue is whether without prejudice communications have resulted in a concluded compromise agreement, those communications are admissible…. … (2) Even if there is no concluded compromise, a clear statement which is made by one Party to negotiations, and on which the other Party is intended to act and does in fact act, may be admissible as giving rise to an estoppel. That was the view of Neuberger J in Hodgkinson & Corby v Wards Mobility Services[1997] FSR 178 , 191, and his view on that point was not disapproved by this court on appeal.’
“In my judgment, however, where negotiations begin without prejudice, as indeed these began on 1 August, and, what is more, where they are expressly made without prejudice to begin with, which again is this case, it is incumbent on the Party who changes the basis of such negotiations to spell out the change with clarity. It may not be enough merely to say the word ‘open’.”
“The issue is whether the adjudicator's knowledge of the fact that a 'without prejudice' offer had been made by Holystone to Volker meant that, however unconsciously, he was biased towards them. The relevant test is set out by the Court of Appeal in In Re Medicaments and Related Classes of Goods (No. 2)[2001] 1 WLR 700 . Lord Phillips put it in this way: “The Court must first ascertain all the circumstances which have a bearing on the suggestion that the Judge was biased. It must then ask whether those circumstances would lead a fair-minded and informed observer to conclude that there was a real possibility, or a real danger, the two being the same, that the tribunal was biased.”” “The Court must first ascertain all the circumstances which have a bearing on the suggestion that the Judge was biased. It must then ask whether those circumstances would lead a fair-minded and informed observer to conclude that there was a real possibility, or a real danger, the two being the same, that the tribunal was biased.””
“25. The improper deployment of “without prejudice” material in adjudication is something which happens in adjudication as in court although this Court has at least anecdotally seen an increase in this behaviour in adjudication. This often arises because parties represent themselves or are represented by consultants who are not legally qualified and, perhaps, they do not fully understand that truly “without prejudice” communications are privileged and should not be referred to in any legal or quasi-legal proceedings, including adjudication. Whilst if “without prejudice” communications surface in a court, the judge being legally qualified and experienced can usually put it out of his or her mind, it is a more pernicious practice in adjudication because most adjudicators are not legally qualified and there will often be a greater feeling of unease that the “without prejudice” material may have really influenced the adjudicator. This Court can only strongly discourage parties from deploying “without prejudice” communications in adjudication.”
“(a) Obviously, such material should not be put before an adjudicator. Lawyers who do so may face professional disciplinary action. (b) Where an adjudicator decides a case primarily upon the basis of wrongly received “without prejudice” material, his or her decision may well not be enforced. (c) The test as to whether there is apparent bias present is whether, on an objective appraisal, the material facts give rise to a legitimate fear that the adjudicator might not have been impartial. The Court on any enforcement proceedings should look at all the facts which may support or undermine a charge of bias, whether such facts were known to the adjudicator or not.”
‘The current case is far removed from the scenario deplored by Akenhead J. The current case was not a situation where the adjudicator was improperly made aware of an irrelevant and collateral “without prejudice” offer to settle which he ought to put out of his mind. In the current case the question of the admissibility of the “without prejudice” letters was one which the adjudicator had to decide as one of the central issues in the adjudication. The adjudicator was legally qualified. It was the adjudicator himself who identified admissibility as being a central issue. The adjudicator gave both parties an opportunity to make submissions on the question. He considered their submissions and the case law to which he was referred and came to a reasoned decision on the question. It cannot be said that the submission of the letters to the adjudicator, or the way in which he dealt with them, was in any way improper or involved any breach of natural justice or apparent bias.’
‘the Negotiations [REDACTED] were without prejudice.’