"What are you doing?"
"(1) In criminal proceedings evidence of the defendant’s bad character is admissible if, but only if— ... (d) it is relevant to an important matter in issue between the defendant and the prosecution."
"(3) The court must not admit evidence under subsection (1)(d) or (g) if, on an application by the defendant to exclude it, it appears to the court that the admission of the evidence would have such an adverse effect on the fairness of the proceedings that the court ought not to admit it. (4) On an application to exclude evidence under subsection (3) the court must have regard, in particular, to the length of time between the matters to which that evidence relates and the matters which form the subject of the offence charged."
"As Mr Saunders' has stressed, it is the combination of only one previous conviction being relied to show propensity and the passage of time since that conviction which must cause concern. There may be cases where the factual circumstances of just one conviction, even as long ago as 20 years earlier, might be relevant to showing propensity, but we would expect such cases to be rare and to be ones where the earlier conviction showed some very special and distinctive feature, such as a predilection on the part of the defendant for a highly unusual form of sexual activity, or some arcane or highly specialised knowledge relevant to the present offence. In cases with less distinctive features in common, one would require some evidence of the propensity manifesting itself during the intervening period in order to render the earlier evidence admissible as evidence of a continuing propensity."