“(1) For the purposes of section 101(1)(d) the matters in issue between the defendant and the prosecution include- (a) the question whether the defendant has a propensity to commit offences of the kind with which he is charged, except where his having such a propensity makes it no more likely that he is guilty of the offence;(b) the question whether the defendant has a propensity to be untruthful, except where it is not suggested that the defendant's case is untruthful in any respect. (2) Where subsection (1)(a) applies, a defendant's propensity to commit offences of the kind with which he is charged may (without prejudice to any other way of doing so) be established by evidence that he has been convicted of- (a) an offence of the same description as the one with which he is charged, or (b) an offence of the same category as the one with which he is charged. (3) Subsection (2) does not apply in the case of a particular defendant if the court is satisfied, by reason of the length of time since the conviction or for any other reason that it would be unjust for it to apply in his case. (a) the question whether the defendant has a propensity to commit offences of the kind with which he is charged, except where his having such a propensity makes it no more likely that he is guilty of the offence;(b) the question whether the defendant has a propensity to be untruthful, except where it is not suggested that the defendant's case is untruthful in any respect. (2) Where subsection (1)(a) applies, a defendant's propensity to commit offences of the kind with which he is charged may (without prejudice to any other way of doing so) be established by evidence that he has been convicted of- (a) an offence of the same description as the one with which he is charged, or (b) an offence of the same category as the one with which he is charged. (3) Subsection (2) does not apply in the case of a particular defendant if the court is satisfied, by reason of the length of time since the conviction or for any other reason that it would be unjust for it to apply in his case. (a). two offences are of the same description as each other if the statement of the offence in a written charge or indictment would, in each case, be in the same terms; (b). two offences are of the same category as each other if they belong to the same category of offences prescribed for the purposes of this section by an order made by the Secretary of State. (5) A category prescribed by an order under subsection (4)(b) must consist of offences of the same type.
“Well, plainly that is a substantial attack on the prosecution witnesses’ character, and in those circumstances, the law says that it is only right that you should hear what character those who are making such an attack bear. But you also heard about their characters because it may help you to resolve an issue in the case, which is this: the prosecution argue that the defendants have a propensity to commit offences of the sort that you are considering. You may therefore use the evidence of the defendant’s bad character in relation to those two matters which explains why you have heard about it, but only if you find it helpful to do so.”
“You also heard that the defendant has previous convictions for a number of offences of violence. Last being April 1993. A number of offences of dishonesty, last of those also being in 1993 and two drink related offences, which took place during the time of the defendant’s relationship with Miss Byron. This has been given in evidence because the defendant has attacked the character of Miss Byron and it is right in those circumstances that you should know the character of the person making the attack as well. You may use the evidence of the defendant’s bad character, his previous convictions in the following ways. First, if you think it is right you may take it in to account when deciding whether or not the defendant's evidence is truthful. A person with previous convictions for dishonesty may be less likely to tell the truth but of course it doesn’t follow that he is incapable of doing so. You must decide to what extent if at all his character helps you when judging his evidence. If you think it is right you can also take into account when deciding whether or not the defendant committed the offences – with which he is now being charged – his previous convictions. These allegations are of violence and Miss Byron has also said that she had been drinking when he had allegedly committed these offences. You have got to decide to what extent if at all his convictions help you when you are considering whether or not he is guilty, but bearing in mind that his bad character itself cannot prove anything, it cannot prove anything. It cannot prove his guilt on its own. It would therefore be wrong to jump to the conclusion that he is guilty just because of his bad character. ”