It is accepted as a rule of professional practice in this State that there is a general requirement, subject to various qualifications, that a cross-examiner put to an opponent's witness the matters in respect of which, or by reason of which, it is intended to contradict the witness' evidence. (The rule is discussed, for example, by Hunt J in Allied Pastoral Holdings Pty Ltd v Commissioner of Taxation [1983] 1 NSWLR 1 at 16.) The very subject matter of the rule, however, indicates a need for a degree of caution in its formulation; caution which is to be found in the speeches in Browne v Dunn itself. Cross-examination is an art, and the means that may be legitimately employed to cut down the effect of the evidence of a witness or to put a witness or a party upon fair notice of a point are multifarious.
(After quoting from Browne v Dunn his Honour continued)
It is plain that their Lordships, whilst recognising and affirming a rule of practice in the terms in which they expressed themselves, also recognised the need for flexibility in its application. That need arises from the very nature of the subject matter which it concerns. The central purpose of the rule is to secure fairness in the conduct of adversary proceedings. That consideration provides the best guide, both to the practical requirements of the rule in a given case, and to the consequences which may properly flow from its non-observance, including the remedies that are available to deal with a problem so created.
Browne v Dunn was a civil case. There are some obvious difficulties concerning the operation of the rule in criminal trials. The notion of fairness, whilst it has relevance to criminal as well as to civil proceedings, may have a somewhat different practical content in a criminal trial. ... It is quite common for an accused person at a criminal trial, whether represented or unrepresented, and whether in evidence or an unsworn statement, to come out with a version of the facts that has not been put to the Crown witnesses. This might well provide an appropriate subject for comment, but, for reasons that will be expanded below, there may be need for some care in the formulation of the appropriate comment.
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(His Honour referred to what was said by Lord Lane CJ in R v Fenlon (1980) 71 Cr App R 307 as to how a witness should be cross-examined so as to satisfy the rule, and who said that 'It need not be done in minute detail, but it is the duty of counsel to make it plain to the witness ... that his evidence is not accepted and in what respects it is not accepted'.)
However, whilst the rule does apply in this State in criminal as well as civil proceedings, its practical content needs to be related to the circumstances of the particular case, and one important circumstances may be that what is involved is a criminal trial.
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The consequences of a failure to observe the rule in Browne v Dunn will vary depending upon the circumstances of the case, but they will usually be related to the central object of the rule, which is to secure fairness. In a judgment of Mahoney JA in Seymour v Australian Broadcasting Commission (1977) 19 NSWLR 219, his Honour said (at 236-237):
'This kind of problem may arise at different times in the litigation. It may arise during the trial. Thus, where a party fails to cross-examine a witness at all or on a particular matter, it may be prudent for the trial judge at the time to draw the attention of counsel in an appropriate way to the effect this may have on the later conduct of the trial. It may be that the question arises at a later stage in the trial when counsel seeks to call evidence contradicting the witness or discrediting his evidence, or seeks to address upon the basis that the witness's evidence is untrue. The trial judge may then have to determine what course should be followed. Sometimes the interests of justice may be served by having the witness recalled for cross-examination. Sometimes the circumstances may be such that the only way in which justice can be achieved is by directing that, for example, it is not open to counsel, in address, to make such suggestion. What is to be done will depend, as I have said, upon the circumstances of the case. ...'
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