"It is important explanatory evidence that will help the jury understand the background relationship and of course the events leading up to the end of the relationship will help the jury understand the true nature of the events on17 March 2017 ." (b) under section 101(1)(d): “It is relevant to an important matter in issue, i.e.
"The defendant has made an attack on the complainant in his interview, saying in particular that she was aggressive and assaulted him on the night, that she had been secretive and unfaithful with a person called Mark."
"So bare skeletons so far as Tenerife is concerned; verbally abusive words, she is entitled to give; the details of the harassment event leading to the notice, and the emails as they are, but no mention of any unkind remarks made concerning the children."
"In the course of JH's evidence you heard about other incidents involving the defendant. The alleged outbursts at a Spanish airport following a holiday, incidents of name calling and the behaviour outside JH's home in early February resulting in the harassment order. You have also seen emails between both the complainant and the defendant before the alleged incident on 17 March. You have heard about the events and emails for two reasons. Firstly, the prosecution contend that it is background material concerning their relationship and secondly because Mr [Hackett] in his interview and in his evidence has accused JH of using violent behaviour when she visited his address on 17 March. The prosecution submits that as a result you should also know about allegations of his earlier alleged violent behaviour towards her. It is, they say, evidence which may help you in deciding the issues in this case. But remember that he is a man with no previous criminal convictions as I have already directed you."
"important explanatory evidence"
"(a) without it, the court or jury would find it impossible or difficult properly to understand other evidence in the case, and (b) its value for understanding the case as a whole is substantial."
"Who was the aggressor on 17 March? If the defendant had been aggressive and abusive in the past he is more likely to have behaved as alleged on the 17th."
"... it is only fair that the jury should have before them material on which they can form their judgment whether the accused person is any more worthy to be believed than those he has attacked ..."
"The fact that a question put to the accused is irrelevant is in itself no reason for quashing his conviction, though it should have been disallowed by the Judge. If the question is not only irrelevant but is unfair to the accused as being likely to distract the jury from considering the real issues and so lead to 'a miscarriage of justice' ... it should be disallowed, and, if not disallowed, is a ground on which an appeal against conviction may be based."
"In every case the judge, when identifying the purpose for which evidence may be used, should also identify any potential misuse of such evidence arising e.g. from prejudice, and warn against such use."
"Where the apparent weight of the evidence admitted under these provisions comes to be diminished in the light of other evidence, careful directions must be given to the jury to assist them in assessing weight and deciding whether or not there is real significance to the evidence."
"(a) The judge failed to direct the jury that they had to be sure of any particular aspect of the bad character evidence before they could consider placing reliance upon it; (b) The judge did not identify for what particular purpose [this] evidence might be used by them, even if they were sure that the contested event or events occurred as JH recounted; (c) The judge did not point out to the jury that, even if they were sure of one or more of the contentious background matters, on their own they proved nothing – that at the best the evidence was but a small part of the case and the jury's consideration should be principally focused on the events of17 March 2017 ."