“It is essential to the exercise of such a power that a testator shall understand the extent of the property of which he is disposing; shall be able to comprehend and appreciate the claims to which he ought to give effect; and, with a view to the latter object, that no disorder of the mind shall poison his affections, pervert his sense of right, or prevent the exercise of his natural faculties—that no insane delusion shall influence his will in disposing of his property and bring about a disposal of it which, if the mind had been sound, would not have been made.”
“the testator must: (a) Understand that he is giving his property to one or more objects of his regard; (b) Understand and recollect the extent of his property; (c) Understand the nature and extent of the claims upon him, both of those whom he is including in his will and those whom he is excluding from his will; (d) Ensure that no insane delusion shall influence his will in disposing of his property and bring about a disposal of it, which, if the mind had been sound, would not have been made.”
“(i) while the burden starts with the propounder of a will to establish capacity, where the will is duly executed and appears rational on its face, then the court will presume capacity; ” (ii) in such a case the evidential burden shifts to the objector to raise a real doubt about capacity; (iii) if a real doubt is raised, the evidential burden shifts back to the propounder to establish capacity nonetheless.”
“i) “As with testamentary capacity, due execution of an apparently rational and fair will, will ordinarily satisfy the burden of proof on the propounder, unless there are circumstances which excite the suspicion of the court.” ii) In such a case, the propounder may be required affirmatively to prove knowledge and approval. This is an evidential rather than legal burden. iii) The standard of proof is, as is in all civil proceedings, that of the balance of probabilities. Nonetheless the task of satisfying that standard will generally vary in proportion to the degree of suspicion engendered by the circumstances.”
"21. The judge approached the issue of knowledge and approval on a two stage basis. He first asked whether Dr Gill had established sufficient facts "to excite the suspicion of the court", which really amounts to establishing a prima facie case that Mrs Gill did not in fact know of and approve the contents of the will. Secondly, having held that Dr Gill had excited the suspicion of the court, he then turned to consider whether or not those suspicions were allayed by the RSPCA, who were of course supporting the will. This approach accords with Parke B's analysis in Barry v Butlin 2 Moo PC 480, quoted by Lindley LJ in Terry v Painton[1894] P 151 , 156–157, referred to above, and it is reflected in the approach in a number of other cases."
"Where a judge has heard evidence of fact and expert opinion over a period of many days relating to the character and state of mind and likely desires of the testatrix and the circumstances in which the will was drafted and executed, and other relevant matters, the value of such a two-stage approach to deciding the issue of the testatrix's knowledge and approval appears to me to be questionable. In my view, the approach which it would, at least generally, be better to adopt is that summarised by Sachs J in Re Crerar (unreported) but see (1956) 106 LJ 684, 695, cited and followed by Latey J. in In re Morris, decd[1971] P 62 , 78 namely that the court should "consider all the relevant evidence available and then, drawing such inferences as it can from the totality of that material, it has to come to a conclusion whether or not those propounding the will have discharged the burden of establishing that the testatrix knew and approved the contents of the document which is put forward as a valid testamentary disposition. The fact that the testatrix read the document, and the fact that she executed it, must be given the full weight apposite in the circumstances, but in law those facts are not conclusive, nor do they raise a presumption."" "consider all the relevant evidence available and then, drawing such inferences as it can from the totality of that material, it has to come to a conclusion whether or not those propounding the will have discharged the burden of establishing that the testatrix knew and approved the contents of the document which is put forward as a valid testamentary disposition. The fact that the testatrix read the document, and the fact that she executed it, must be given the full weight apposite in the circumstances, but in law those facts are not conclusive, nor do they raise a presumption.""
“There is no serious dispute about the law. The approach that I should adopt may be summarised as follows: i) In a case of a testamentary disposition of assets, unlike a lifetime disposition, there is no presumption of undue influence; ii) Whether undue influence has procured the execution of a will is therefore a question of fact; iii) The burden of proving it lies on the person who asserts it. It is not enough to prove that the facts are consistent with the hypothesis of undue influence. What must be shown is that the facts are inconsistent with any other hypothesis. In the modern law this is, perhaps no more than a reminder of the high burden, even on the civil standard, that a claimant bears in proving undue influence as vitiating a testamentary disposition; iv) In this context undue influence means influence exercised either by coercion, in the sense that the testator's will must be overborne, or by fraud. v) Coercion is pressure that overpowers the volition without convincing the testator's judgment. It is to be distinguished from mere persuasion, appeals to ties of affection or pity for future destitution, all of which are legitimate. Pressure which causes a testator to succumb for the sake of a quiet life, if carried to an extent that overbears the testator's free judgment discretion or wishes, is enough to amount to coercion in this sense; vi) The physical and mental strength of the testator are relevant factors in determining how much pressure is necessary in order to overbear the will. The will of a weak and ill person may be more easily overborne than that of a hale and hearty one. As was said in one case simply to talk to a weak and feeble testator may so fatigue the brain that a sick person may be induced for quietness' sake to do anything. A ‘drip drip’ approach may be highly effective in sapping the will; vii) There is a separate ground for avoiding a testamentary disposition on the ground of fraud. The shorthand used to refer to this species of fraud is ‘fraudulent calumny’. The basic idea is that if A poisons the testator's mind against B, who would otherwise be a natural beneficiary of the testator's bounty, by casting dishonest aspersions on his character, then the will is liable to be set aside; viii) The essence of fraudulent calumny is that the person alleged to have been poisoning the testator's mind must either know that the aspersions are false or not care whether they are true or false. In my judgment if a person believes that he is telling the truth about a potential beneficiary then even if what he tells the testator is objectively untrue, the will is not liable to be set aside on that ground alone; ix) The question is not whether the court considers that the testator's testamentary disposition is fair because, subject to statutory powers of intervention, a testator may dispose of his estate as he wishes. The question, in the end, is whether in making his dispositions, the testator has acted as a free agent.”
“32. … I would accept that undue influence can be proved without demonstrating that the circumstances are necessarily inconsistent with any alternative hypothesis. On the other hand, the circumstances must be such that undue influence is more probable than any other hypothesis. If another possibility is just as likely, undue influence will not have been established. When making that assessment, moreover, it may well be appropriate to proceed on the basis that undue influence is inherently improbable.”
“The law has adopted a sternly protective attitude towards certain types of relationship in which one party acquires influence over another who is vulnerable and dependent and where, moreover, substantial gifts by the influenced or vulnerable person are not normally to be expected. Examples of relationships within this special class are parent and child, guardian and ward, trustee and beneficiary, solicitor and client, and medical adviser and patient. In these cases the law presumes, irrebuttably, that one party had influence over the other. The complainant need not prove he actually reposed trust and confidence in the other party. It is sufficient for him to prove the existence of the type of relationship.”