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1. Generally, documents and real evidence will need to be presented by witnesses in court. This means that every document or object which you wish to use in court must be produced by a witness as an exhibit.
2. Each exhibit must be identified by a label or other mark and sufficiently described in the statement to identify it. Identification should be made by the initials of the person who will produce the exhibit and a consecutive number. Thus, for example, the object would be marked with a label signed by AB reading:
and the statement would include the words:
3. For example:
4. You must ensure that all exhibits are kept safely and that there is a clear, identifiable audit trail from the moment that exhibits are seized to the moment they are presented in evidence. This is because the prosecution may have to prove that the exhibit before the court is the same exhibit that was referred to by the witness in his or her statement, or that the exhibit has not been tampered with illicitly while being retained for court proceedings. See See OG: Material and evidence management (collection, retention and disposal).
5. In establishing this chain of evidence, each person handling an exhibit must write a brief statement identifying the exhibit and its whereabouts, stating when they received it and who they received it from, and saying to whom they passed it and when.
6. So, for example, in respect of a sample which is seized and taken to a laboratory for testing, you need to obtain statements covering all the stages from the taking of the sample or the taking into possession of an article, through submission to the laboratory, testing etc, and to its production in court. You should obtain a statement from the officer carrying out the analysis to be able to say how the sealed sample came into the possession of that officer and how it was identified.
7. Where you find relevant documents in the defendant's possession, you should exhibit them in your statement detailing how they came to be in your possession, and, if applicable, include the fact that you have used your s20 powers to take possession of them. You should also obtain a statement from any person who gives you a document, describing the document and its context. If the person is called to prove an essential element in the case, they may refer to the documents when giving evidence.
8. The procedure for ensuring that documents that you do not have (or that you only have copies of) are brought to court is dealt with in "Pre-Trial Procedure".
9. If it is possible that the defendants may subsequently cast doubt on their own records, you should ask a director to confirm their validity either in a statement, if they are a witness, or in a PACE interview, if they are representing a corporate defendant.
10. You should obtain section 10 Criminal Justice Act 1967 admissions from the defence in respect of the documents from Companies House. (See the section on Formal Admissions). If they cannot be agreed, you will need to obtain certified copies from Companies House.
11. These should be adequately identified in the statement of the inspector (or other person) that made the video, took the photograph or made the drawing.
12. Computer-generated evidence may be either real or hearsay. Evidence which has been electronic in source, process and result, with no human intervention in the process may be considered real evidence, and presumed reliable. It may, however, still be necessary to call evidence to describe the function and operation of the computer before the judge can decide whether the document is real evidence or hearsay.
13. Information recorded and processed by a computer, but which has been inputted either directly, or indirectly, by a person is hearsay. To be admissible it must be brought within one of the exceptions to the hearsay rule. Exceptions to the hearsay rule.
14. There is now a rebuttable presumption that computers are working properly. The defence may adduce some evidence to the contrary, and in those circumstances the prosecution would have to prove the reliability of the computer. The section on Hearsay deals with the further requirements that may have to be complied with.
15. In most cases, documents being produced in evidence do not offend against the hearsay rule because you are not asserting that the facts stated within them are true. For example, while a letter from HSE may show that a defendant was told that his methods were unsafe, it does not prove that he actually used such methods. So, if the purpose of producing the document is to prove what it said, rather than the truth of what it said, there is no difficulty.
16. Similarly, an expert witness may rely on documents which form part of the literature which relates to a process or risk; there is no need to produce the originals or to call the person who wrote the document.
17. Occasionally, you will wish to prove the truth of statements contained in a document. In such cases, you will normally need to call the maker of the document to support the statements it contains. Sometimes this is not possible. If you need to prove the facts alleged in a document and cannot call the maker of the statement, there are provisions which allow the document to be admitted in evidence, and these are dealt with in the section on Exceptions to the hearsay rule.
18. Under s 20 HSWA, you have the power to take a copy of documents required to be kept under any of the relevant statutory provisions or that are necessary for you to see for the purposes of your investigation. You should be aware that, if such documents are relied upon in a prosecution, this infringes their right against self-incrimination. The basis of this argument is that, since the defendant was compelled to provide the copies, they have been compelled to incriminate themselves.
19. The Court of Appeal has stated that there is a distinction to be drawn between the compulsory production of documents or other material which had an existence independent of the will of the suspect or accused person and statements that they have had to make under compulsion.
20. In other words, it is important to determine whether the material in question is evidence that a defendant has been compelled to create (eg a compelled statement) or evidence that was already in existence, where the effect of the compulsory power is to bring such evidence to the attention of the court (eg a company's documents). Material in the first category may be protected from prosecution use by the right not to incriminate oneself. Material in the second category does not have this protection.
21. Evidence of the previous safety record of the defendant may be relevant to the offence and will be relevant to the penalty. You should therefore collect any relevant evidence of previous convictions and previous enforcement action, whether formal or informal, and ensure that steps have been taken before trial to allow its use, when admissible.
22. Evidence of previous convictions will not usually be admissible as part of the prosecution case but may be in certain limited circumstances, for example, as 'similar fact evidence', to rebut evidence of lack of awareness of danger or innocent mistake. In limited circumstances, previous convictions may be adduced in evidence as ‘bad character evidence’ if an application is made to the court, and the court feels that the evidence is relevant to the case, and one of the circumstances mentioned in section 101 Criminal Justice Act 2003applies.
23. Where there have been letters or notices to the defendant previously, the inspector who has first-hand knowledge of these should prepare a statement describing that action. Where this is not practical, then the investigating inspector should produce the documents in their statements stating "from HSE records I produce...
The letters or Notices may be admissible at trial in accordance with CJA 2003 if the requirements of section 117 of that Act are complied with.
24. Rule 8.3 (b)(iv) of the Criminal Procedure Rules requires the prosecutor to provide details of the defendant's previous convictions as part of the initial details of the prosecution case. If the defence dispute a previous conviction you should then write to the clerk of the convicting court for a signed certificate of conviction (Crown Court) or copy of the memorandum of conviction (magistrates' court) that you should produce in court. Some courts refer to this document as "a certified copy of the Court Extract". It can be used at trial to prove the conviction.
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