"The principal facts (undisputed at the hearing) were as follows: i. in March 2008, Ms Unsworth lived at 32B Crowley Lane, Oldham; ii. Paul and Nicola Parsons lived next door at 40 Crowley Lane; iii. conifer trees, approximately 10-12 feet in height, stood on the Parsons' side of the boundary between the gardens of the two houses; iv. these trees were the property of the Parsons; v. in December 2007, Ms Unsworth wrote to the Parsons on two occasions requesting that the trees be reduced in height … In the letter dated 14/12/07, Ms Unsworth made reference to her depression; vi. on the 2 nd March 2008, the Parsons discovered Ms Unsworth cutting the conifer trees with a saw. This cutting was substantially on the Parsons' side of the boundary and caused significant damage to the trees (as depicted in the photographic exhibits) vii. Mrs Parsons called the police who attended. Ms Unsworth was arrested on suspicion of criminal damage."
" A person charged with an offence to which this section applies shall, whether or not he would be treated for the purposes of this Act as having a lawful excuse apart from this subsection, be treated for those purposes as having a lawful excuse … (b) if he destroyed or damaged or threatened to destroy or damage the property in question … in order to protect property belonging to himself or another or a right or interest in property which was or which he believed to be vested in himself or another, and at the time of the act or acts alleged to constitute the offence he believed -- (i) that the property, right or interest was in immediate need of protection ; and (ii) that the means of protection adopted or proposed to be adopted were or would be reasonable having regard to all the circumstances."
" For the purposes of this section it is immaterial whether a belief is justified or not if it is honestly held."
"But in our view the question whether he was entitled to the benefit of the defence turns upon the meaning of the words 'in order to protect property belonging to another.' It was argued that those words were subjective in concept, just like the words in the latter part of section 5(2)(b) which are subjective. We do not think that is right. The question whether or not a particular act of destruction or damage or threat of destruction or damage was done or made in order to protect property belonging to another must be, on the true construction of the statute, an objective test."
"But we add that we think that Hunt was correctly decided, for this reason. There are two aspects to this type of question. The first aspect is to decide what it was that the applicant, in this case Valerie Hill, in her own mind thought. The learned judge assumed, and so do we, for the purposes of this decision, that everything she said about her reasoning was true. I have already perhaps given a sufficient outline of what it was she believed to demonstrate what is meant by that. Up to that point the test was subjective. In other words one is examining what is going on in the applicant's mind. Having done that, the judges in the present cases – and the judge particularly in the case of Valerie Hill – turned to the second aspect of the case, and that is this. He had to decide as a matter of law, which means objectively, whether it could be said that on those facts as believed by the applicant, snipping the strand of the wire, which she intended to do, could amount to something done to protect either the applicant's own home or the homes of her adjacent friends in Pembrokeshire. He decided, again quite rightly in our view, that that proposed act on her part was far too remote from the eventual aim at which she was targeting her actions to satisfy the test."
"[Counsel for the prosecutor] concedes that demolishing the wall was capable of protecting property, but he says it was done for an additional purpose, (to avoid litigation), and if there is a dual purpose then the objective test is not met. I agree with [counsel for the defendant] that it is plain on the facts as found by the justices that what the defendant did, namely demolishing the wall, could on the facts, as believed by him (namely that he was entitled to exercise a right of way which was being obstructed by the wall) amount to something which was done to protect his right of way: … No doubt he hoped to avoid litigation. He could have sought to protect his right of was either by recourse to litigation or by way of abatement. The fact that he chose the latter does not mean that his act of destroying the wall was not done to protect his right of way on the facts as he saw them. His purpose was to protect the right of way. He chose the means of abatement because he hoped to avoid litigation. That does not convert the avoidance of litigation into his purpose."
"It is unnecessary to reach a conclusion as to whether the defendant's self-help was justified as a matter of civil law on the facts of this case, because the prosecutor chose to take proceedings in the criminal courts."
"In the criminal context the question is not whether the means of protection adopted by the defendant were objectively reasonable, having regard to all the circumstances, but whether the defendant believed them to be so. By virtue of section 5(3) it is immaterial whether his belief was justified, provided it was honestly held."
"13. The Court accepted the appellant's evidence that, at the time she committed the relevant acts she honestly believed she was doing those acts in order to protect a right to light in the kitchen. The Court accepted that at the relevant time she felt 'depressed' at least in part because of the lack of light to her kitchen and that she felt she needed to take immediate action in order to remedy that situation. The Court did not find it necessary to determine whether, as a matter of civil law, such a right to light in fact existed. 14. The Court concluded, however, that if the appellant's advocate was correct in his submission that Chamberlain should be broadly applied, this might permit damage to be caused to property in situations beyond which the High Court had envisaged. 15.On the basis that Chamberlain could not be so applied, and following the decision in R v Hill and Hall[1989] 89 Cr App R p74 , as explained by the High Court at paragraph 34 of the Judgment in Chamberlain , the Court found that, in the circumstances, there was no evidence on which it could be said that the appellant believed there was a need of protection from immediate danger. In coming to this conclusion, the Court took into account that the appellant had practical and legal steps she could have taken in order to resolve the dispute, for example, procedures which could have been invoked by the local authority and, if necessary, civil proceedings in the County Court. The Court also considered that protecting a right to light in these circumstances was distinguishable from protecting a right of way, the dark kitchen being a relatively minor interference with the appellants' enjoyment of her property (despite her evidence about her 'depression'), whereas the obstruction of the right of way in Chamberlain was a major interference to the respondent's ability to use his property in that case."
"In the light of our findings of fact, were we justified in finding that the statutory defence had not been established by the appellant?"
"This provision [that is, I interpolate, section 5(2)(b)] is in line with general principles of defences in so far as it relates to beliefs in facts or circumstances; however, it goes well beyond that in so far as it provides D's belief that the means employed were reasonable will excuse. This must be contrasted with the position in self-defence and the prevention of crime where D may use such force as is found by a jury to be reasonable in the circumstances which D believed to exist. Under the common law defence, the defendant's belief in the trigger for the defence is assessed on a subjective basis but the response to it is assessed objectively."