Whether evidence amounts to corroboration is governed by the fundamental principle that it must be evidence - independent of the witness to be corroborated - which tends to confirm the evidence of that witness that the crime was committed and that the accused committed the crime. This principle has from time to time been misconceived as requiring the corroboration evidence itself to be probative of the fact that the accused committed the crime. Vincent JA in R v Taylor noted that there has been a 'remarkable persistence of the misconception' that evidence relied upon as corroboration 'must itself be probative of guilt.' The present argument rests upon this very fallacy.
In Doney v R ('Doney'), the corroborative evidence did not itself directly link the accused to the crime charged. The High Court rejected a submission that the evidence could not be corroborative because it did not implicate the accused in the offence charged. The joint judgment adopted the classic statement from R v Baskerville ('Baskerville') that corroborative evidence must [tend] to show that the story of the accomplice that the accused committed the crime is true, not merely that the crime has been committed, but that it was committed by the accused.
The highlighted words are not always included when Baskerville is cited, which may explain why the essence of corroboration is sometimes misunderstood. The passage from the judgment of Callaway JA in R v McLachlan, upon which the applicant placed heavy reliance, does refer to the relevant part of the judgment in Doney, which was in these terms:
The essence of corroborative evidence is the presence of some confirmation, support or strengthening of other evidence such that that other evidence is rendered more probable. ...
...
In the case of an accomplice's evidence, it is sufficient if it strengthens that evidence by confirming or tending to confirm the accused's involvement in the events as related by the accomplice: see Baskerville; Reg v Hester.
This Court has repeatedly rejected the notion that corroborating evidence must itself prove that the crime was committed and that the accused was involved in its commission. Thus, in R v Rayner, Winneke P observed:
In truth, the essence of corroboration is that it is evidence coming from a source independent of the person to be corroborated which renders that person's evidence in a material particular more probable, in the sense that it tends to show not only that the crime charged was committed but that the accused was involved in its commission: R v Baskerville's [1916] 2 KB 658 at 667 per Lord Reading CJ; R v Kendrick [1997] 2 VR 699 at 708.
Similar observations were made in R v Taylor. In R v Trong Duy Ngo, the Court said:
The locus classicus of what amounts to corroborative material is the decision in Baskerville. The decision in that case is not authority for the proposition that potentially corroborative material must itself prove the crime was committed and that the accused was involved in its commission.
In none of these cases did the corroborative evidence, viewed in isolation from the evidence to be corroborated, prove the commission of the offence or that the accused was implicated in it.
In BRS v R, Brennan CJ observed that: '[I]t is sufficient to constitute corroboration that the evidence should strengthen the evidence to be corroborated as to a fact on which proof of guilt depends. The essential quality of corroborative evidence is that it must independently 'confirm', 'support' or 'strengthen' the evidence to be corroborated, by rendering that 'other evidence more probable.' It does so by providing support, from a separate and more trustworthy source, for the truth and reliability of the evidence to be corroborated. Hence there is no distinction for the purposes of corroboration between evidence which itself tends to implicate the accused in the commission of the offence charged and evidence which is capable of supporting the evidence of the witness to be corroborated. Evidence may be corroborative even though it may itself be regarded either as consistent with innocence or as equivocal. It is for the jury to determine whether it is corroborative.[22]