This chapter discusses exceptions to the general rule that there is no requirement for evidence to be corroborated. There are three categories of exception (i) where corroboration is required as a matter of law (speeding, perjury, treason, and attempts to commit these offences) and therefore a conviction cannot be based on uncorroborated evidence; (ii) where neither corroboration in a technical sense nor supportive evidence is required as a matter of law, but the tribunal of fact may need to be warned to exercise caution before acting on the evidence of certain types of witness, if unsupported; (iii) five cases in which corroboration is not required as a matter of law, and there is no obligation to warn the tribunal of fact of the danger of acting on the unsupported or uncorroborated evidence, but there is a special need for caution. The five cases are confessions by mentally handicapped persons, identification evidence, lip-reading evidence, cases of Sudden Infant Death Syndrome, and unconvincing hearsay. Identification evidence is dealt with separately in Chapter 10.
Chapter
9. Corroboration and care warnings
Chapter
20. Experts and opinion evidence
This chapter discusses the law on experts and opinion evidence. As a general rule, opinion evidence is inadmissible: a witness may only speak of facts that he personally perceived, not of inferences drawn from those facts. However, there are two exceptions to this general rule: (i) an appropriately qualified expert may state his opinion on a matter calling for the expertise that he possesses; and (ii) a non-expert witness may state his opinion on a matter not calling for any particular expertise as a way of conveying the facts that he personally perceived. Experts may also give evidence of fact based on their expertise. The chapter covers the duties of experts and the rules which apply where parties propose to call expert evidence.
Chapter
9. Corroboration and care warnings
This chapter discusses exceptions to the general rule that there is no requirement for evidence to be corroborated. There are three categories of exception: (i) where corroboration is required as a matter of law (speeding, perjury, treason, and attempts to commit these offences) and therefore a conviction cannot be based on uncorroborated evidence; (ii) where neither corroboration in a technical sense nor supportive evidence is required as a matter of law, but the tribunal of fact may need to be warned to exercise caution before acting on the evidence of certain types of witness, if unsupported; (iii) five cases in which corroboration is not required as a matter of law and there is no obligation to warn the tribunal of fact of the danger of acting on the unsupported or uncorroborated evidence, but there is a special need for caution. The five cases are: confessions by mentally handicapped persons, identification evidence, lip-reading evidence, cases of Sudden Infant Death Syndrome, and unconvincing hearsay. Identification evidence is dealt with separately in Chapter 10.
