“When we consider whether the defendant had good reason to have the knives and we reflect on whether she feared an attack should we consider (A) or (B) - (A) whether in assessing the facts available to the defendant at the time she was actually likely to be attacked or (B) whether in a confused and possibly irrational state she might have believed she might be attacked even if that was logically unlikely?”
“You should consider all the facts alleged [by] the prosecution and the defence that are alleged to amount to good reason for having the knife in a public place. You should decide which of those have been proved to the standard I directed you about yesterday that is that the fact has been proved by the defendant as being more likely. When you have identified those facts that you find proved, if any, you need to consider whether they amount to a good reason, this is a matter you need to consider objectively, that is, would an outside, independent observer consider that those facts amounted to a good reason for possession of the knife in a public place. You should not approach that question subjectively by taking the defendant’s state of mind, whatever you may think it was. The reason why the law does not permit that is perhaps obvious, for example, say a person allowed himself to get drunk and in that state formed some distorted view of a situation and behaviour in response to that imaginary situation he could not say afterwards “I believed I had a good reason for doing what I did although I accept that there was in fact no good reason for doing so and I would not have done what I did if I had been sober”
“Once the facts are known the tribunal of fact can safely be left to decide for itself whether the statutory defence, which is formulated in simple words, has been made out.”