“4.04 One of the outstanding characteristics of wood is its infinite variety. Some woods are very uniform both in texture and colour and there is little or no visible difference between one species and another. Many timbers show variation in texture and colour over a relatively small area (as illustrated by the extracts of texts in Appendix 3). 4.05 The fingerprint lift has three distinct features, as well as the imprint of the grain of the veneer and the fingerprints. 4.06 An examination of the door, in the area from where the fingerprints have been taken, could find no evidence of the marks corresponding to the fingerprint lift. 4.07 The only mark that was similar to Mark A could not be the mark by virtue of the fact that the grain pattern is incorrect and the fingerprint lift tape protrudes over the edge of the door and the mark appears to be a scuff and not a scratch. 4.08 I conclude that the fingerprint could not have come from that door in the area from where the fingerprint was said to have been lifted.”
“5. My original appraisal of the fingerprint lift was based on a photocopied document, a photocopy of the fingerprint lift and advices from a fingerprint expert that the marks within the area of the fingerprint lift were not background noise but could only have been picked up at the time of the original lift. Having viewed the original fingerprint lift in the presence of Miss Newman and Mr J Kelly, Greater Manchester Police, I am happy to accept that those marks that I had interpreted as marks being lifted from the door are indeed air bubbles and creases within the tape used. However, removing these factors from the equation, one can still clearly see an imprint of the grain from the wood area.”
“6. I asked Ms Newman to take a fingerprint lift from the door. An area of the door above where it is said that the original lift was taken from was coated in powder. Low tack adhesive tape, was placed over the powder, rubbed and then removed and mounted on a piece of acetate film. The sample showed the fingerprints form someone who had been handling the door and the grain of the wood veneer beneath. A copy of the lift can be found at Annex 1 to this report. 7. I was able to place the lift over the area from where it had been taken from and matched it exactly with the features of the wood grain that were evident on the tape. It is quite clear that the powder enhances the features of the grain beneath the fingerprint allowing it to be picked up by the adhesive in the tape. The powder enhances the various features, the late wood and the early wood, that have been laid down whilst that timber was growing. When overlaid, the numerous feature of pits and lines of early wood and late wood were evident. When laid over the area from where the lift was taken from it could be seen that there was an exact match. This contrasts sharply when comparing it with other areas of the door. Even though there are similar features there was no exact match, because the growth of the timber and the effect of machining the veneer has produced different pattern in the timber therefore, even when a similar growth pattern was found, when the lift was aligned with it, the rest of the lift did not match. 8. When I compared the original fingerprint lift with the one that Ms Newman took for me I noticed striking similarities. The same features that I had noticed on the original fingerprint lift were clearly evident on the one that Ms Newman took – the grain of the wood from the door. As with the sample that Ms Newman took, I overlaid the original lift with various features that appeared both on the door and the lift. Despite finding a number of similar growth patterns in both the lift and the door veneer, when the original fingerprint lift is laid over the door, the match is incomplete. I examined the whole of the door in the area where I was told in a previous examination of the door the fingerprint lift was taken from. The lift was examined in different orientations and in reverse.”
“Methodology 12. Through detailed examination of wood structures it is possible by the naked eye, or in exceptional cases with a microscope, to differentiate between the grains of different woods. Each species forms distinct patterns of cell deposition within the annual growth rings, and the growth rings themselves are subject to variation through a number of different factors. The patterns of growth are unique to each tree from where the sample was taken and through analysis of the pattern of growth and the relationship of the alignment of cells, it is possible to determine if the sample was from the same tree, the same timeframe or the same area. Through using these techniques it has still not been possible to match the wood grain of the veneer seen on the door with that seen on the original fingerprint lift. Based on my investigation I have come to the following conclusions: 13. Wood is not a solid homogenous substance but a porous one composed of large numbers of very small elements or cells. 14. Different timbers have widely different properties. The texture of a wood depends on the size of its cells and the distribution of the different kinds of cells which it contains. 15. The absolute width of rings varies by species, age of the tree and growing conditions. In any one tree the rings can be bigger on a side that gets more light or due to the presence of reaction wood. 16. One of the outstanding characteristics of wood is its infinite variety. Some woods are very uniform both in texture and colour and there is little or no visible difference between one species and another. Many timbers show variation in texture and colour over a relatively small area. The fingerprint lift has three distinct features, as well as the imprint of the grain of the veneer and the fingerprints. An examination of the door, in the area from where the fingerprints have been taken, could find no evidence of the wood grain pattern marks corresponding to the wood grain pattern in fingerprint lift. 17. The door has not been changed as suggested by Ms Newman. It is quite apparent that the wood grain is enhanced by the application of the fingerprint powder and that this is the imprint on the tape. This was proved by the fingerprint lift taken by Ms Newman at my meeting on11th August 2003 . 18. I conclude that the fingerprint could not have come from that door in the area from where the fingerprint was said to have been lifted.”
“However Mr Murat goes on to say that he failed to match the original lift with any area on the door. He states he examined the whole of the door and used various orientations and in reverse. As I witnessed his examination I would state that his approach was haphazard where he randomly placed the lift on various areas of the door. He did not cover the whole area and it tool less that 1 hour. To do this examination it would require a millimetric scan covering a full 360° rotation of the acetate lift. I would expect this type of examination to take several days.”
“In paragraph 12 Mr Murat states that different grains can be differentiated using the naked eye or a microscope. He states that using these techniques it has not been possible to match the wood grain. Mr Murat did not use a microscope, and previously in his statement he comments the pattern between the example lift I took and that on the original lift is “strikingly similar”
“Mr Murat does not appreciate the factors which determine what does or does not appear in a fingerprint lift. I have never suggested that there could have been an anatomical change to the wood veneer. What I have stated however, is that the lift under review has been produced under the unique conditions prevailing at that time and with all (or some) of the above factors influencing what was eventually captured by Mr Smith. I feel that Mr Murat has misunderstood my report. I have not suggested at any point that contaminants could be confused with wood grain. I have merely stated the factors which must be considered when evaluating the provenance of a fingerprint lift including any contaminants upon the surface of the door at that time. I am quite aware of the unique qualities of wood grain and can appreciate that Mr Murat has the ability to determine the origin of a wood sample when comparing sample with sample or sample with the same tree, however Mr Murat is conducting an evaluation comparing a fingerprint lift with the grained surface of a door and has no expertise in this area. The fact that he has made some elementary errors in his original evaluation suggests that he is unqualified to pass an opinion on the provenance of this fingerprint lift. I would also question the methodology he has applied to this evaluation. I feel that it is inappropriate to apply a technique for establishing the origin of a wood sample to compare a fingerprint lift with all its imperfections, creases and air bubbles with the surface of a door. I would also add that it is unclear from Mr Murat’s report if he was able to compare the lift against the whole surface of the door, millimetre by millimetre, rotating the lift through 360 degrees at each stage of the process, and at the same time interpreting all the features apparent, as this is the only way that it may be possible to locate the exact point of contact where Mr Smith placed the adhesive tape upon the surface of the door. In conclusion, I feel that there is again no substance to Mr Murat’s additional report. I am satisfied that he has acknowledged his failings in respect of his abilities to evaluate a fingerprint lift, but unfortunately he is still unaware of either the factors which influence what is ultimately revealed in a fingerprint lift and the application of an appropriate methodology to consider the provenance of a fingerprint lift.”
“(a) whether the evidence appears to the Court to be capable of belief; (b) whether it appears to the Court that the evidence may afford any ground for allowing the appeal; (c) whether the evidence would have been admissible in the proceedings from which the appeal lies on an issue which is the subject of the appeal; and (d) whether there is a reasonable explanation for the failure to adduce the evidence in those proceedings.”
“18. Where the Court of Appeal has heard oral evidence under section 23(1)(c) (whether pursuant to its own decision, or by agreement, or de bene esse), the evidence will almost always have appeared, on paper, to be capable of belief and to afford a possible ground for allowing the appeal. By the time the court comes to decide whether the appeal should be allowed or dismissed, it will have heard the evidence, including cross-examination, and any submissions made on its effect. It may then conclude, without doubt, that the evidence cannot be accepted or cannot afford a ground for allowing the appeal. Such was the case, for example, in R v Jones (Steven)[1997] 1 CrAppR 86 , where the court, having decided to receive and having heard opinion evidence from an expert, found conclusive objections to the acceptability of that opinion (see p 94). The court may, on the other hand, judge the fresh evidence to be clearly conclusive in favour of allowing the appeal. Such might be the case, for example, if a witness who could not be in any way impeached testified, on oath and after all appropriate warnings, that he alone had committed the crime for which the appellant had been convicted. The more difficult cases are of course those which fall between these extreme ends of the spectrum. 19. It is undesirable that exercise of the important judgment entrusted to the Court of Appeal by section 2(1) of the 1968 Act should be constrained by words not to be found in the statute and that adherence to a particular thought process should be required by judicial decision. Thus the House in Stafford were right to reject the submission of counsel that the Court of Appeal had asked the wrong question by taking as the test the effect of the fresh evidence on their minds and not the effect that that evidence would have had on the mind of the jury ([1974] AC 878 at 880). It would, as the House pointed out, be anomalous for the court to say that the evidence raised no doubt whatever in their minds but might have raised a reasonable doubt in the minds of the jury. I am not persuaded that the House laid down any incorrect principle in Stafford, so long as the Court of Appeal bears very clearly in mind that the question for its consideration is whether the conviction is safe and not whether the accused is guilty. But the test advocated by counsel in Stafford and by Mr Mansfield in this appeal does have a dual virtue to which the speeches I have quoted perhaps gave somewhat inadequate recognition. First, it reminds the Court of Appeal that it is not and should never become the primary decision-maker. Secondly, it reminds the Court of Appeal that it has an imperfect and incomplete understanding of the full processes which led the jury to convict. The Court of Appeal can make its assessment of the fresh evidence it has heard, but save in a clear case it is at a disadvantage in seeking to relate that evidence to the rest of the evidence which the jury heard. For these reasons it will usually be wise for the Court of Appeal, in a case of any difficulty, to test their own provisional view by asking whether the evidence, if given at the trial, might reasonably have affected the decision of the trial jury to convict. If it might, the conviction must be thought to be unsafe.”
“the two relevant questions are whether study and experience will give a witness’s opinion an authority which the opinion of one not so qualified will lack, and (if so) whether the witness in question is skilled and has adequate knowledge. If these conditions are met the evidence of the witness is in law admissible, although the weight to be attached to his opinion must of course be assessed by the tribunal of fact.”