"12. Protection is also provided for the defendant at the stage of admissibility by the terms of s.101(3) if the admission of the evidence could cause unfairness, and by the reference in s.103(3) to convictions which it would be unjust to admit as evidence of a propensity to commit offences of the kind with which he is charged because the Court is satisfied, 'by the reason of the length of time since the conviction or for any other reason' that it would be unjust for sub-section 103(2) to apply. In this context, there is a very close relationship between the requirements of fairness and the general requirement of the rules of evidence that, unless evidence is relevant, it should not be admitted. 13. Those provisions protect against unfairness arising out of the admission of bad character evidence under s.101(1)(d) or (g). The question also arises as to whether reliance can be placed ons.78 of Police and Criminal Evidence Act 1984 ("