"For the purposes of this Act, a person lacks capacity in relation to a matter if at the material time he is unable to make a decision for himself in relation to the matter because of an impairment of, or a disturbance in the functioning of, the mind or brain."
"If a decision could have serious or grave consequences, it is even more important that a person understands the information relevant to that decision."
“(1) what the two options are, including information about what they are, what sort of property they are and what sort of facilities they have; (2) in broad terms, what sort of area the properties are in (and any specific known risks beyond the usual risks faced by people living in an area if any such specific risks exist); (3) the difference between living somewhere and visiting it; (4) what activities L would be able to do if he lived in each place; (5) whether and how he would be able to see his family and friends if he lived in each place; (6) in relation to the proposed placement, that he would need to pay money to live there, which would be dealt with by his appointee, that he would need to pay bills, which would be dealt with by his appointee, and that there is an agreement that he has to comply with the relevant lists of "do"s and "don't"s, otherwise he will not be able to remain living at the placement; (7) who he would be living with at each placement; (8) what sort of care he would receive in each placement in broad terms, in other words, that he would receive similar support in the proposed placement to the support he currently receives, and any differences if he were to live at home; and (9) the risk that his father might not want to see him if L chooses to live in the new placement.”
“[76] The test for capacity to marry is also a simple one: (a) Marriage is status specific not person specific. (b) The wisdom of the marriage is irrelevant. (c) P must understand the broad nature of the marriage contract. (d) P must understand the duties and responsibilities that normally attach to marriage, including that there may be financial consequences and that spouses have a particular status and connection with regard to each other. (e) The essence of marriage is for two people to live together and to love one another. (f) P must not lack capacity to enter into sexual relations. [77] The decision is about capacity and not welfare. Thus I do not take into account aspects of his decision making which affect the consequence of his decision making, so long as they do not affect the decision making process in itself.”
“Munby J was careful not to formulate this proposition in absolute terms. I respectfully agree that he was right not to do so. The authorities have set the standard for capacity to choose to engage in sexual relations at an equivalently low level to that for capacity to marry: see for example D Borough Council v AB[2011] EWHC 101 [COP];[2011] 2 FLR 72 , at [21]. If someone has the capacity to consent to marry then, as a matter of empirical experience, he or she is likely to have the capacity to choose to engage in sexual relations. However, because capacity is always issue-specific, capacity to marry, and capacity to choose to engage in sexual relations, are legally distinct. They may not necessarily produce the same answer, although typically they will.”
“Needless to say, these are all perfectly valid marriages.”
‘All that being said, I agree with the Official Solicitor's submissions on this. I do not accept that a sixth factor or limb ought to be introduced into the JB test, namely, to have insight into and the ability to control one's urges. I also agree the conclusion I have reached, namely that Peter has capacity in this area, fits in with Cobb J's statement in Re Z[2016] EWCOP 4 , namely that ordinary risk taking, which may be unwise does not render the decision incapacitous. I would go further. A person can have the capacity to engage in sexual relations, understanding that his partner may withdraw her consent at any moment, and that with that he must stop the sexual act. If, however, when that withdrawal of consent happens the person is unable to overcome his urges, that is nothing to do with capacity to consent to sexual relations.’