The original decision in this case, that LS had capacity to consent to sexual relations and marriage, was revisited in light of the House of Lords decision in R v C. (1) The MCA statutory scheme should be applied in preference to the previous civil case law; the approach in R v C clearly applied to both the civil and criminal arenas, and was consistent with s3 MCA, so would be followed. (2) Capacity requires not only an understanding of the relevant information but also the ability to retain and weigh it in the balance: therefore capacity to consent to sexual relations is person- and situation-specific, and there may be factors (such as irrational fear) impeding or undermining a person's capacity to make a choice. (3) This approach applies equally to marriage. (4) On the facts, the conclusion about capacity was the same. [Caution.]

Related judgments

The following is an automatically-generated list of the pages in Category:Capacity to consent to sexual relations:

• London Borough of Ealing v KS (2008) EWHC 636 (Fam) — Applications by local authority seeking declarations that a vulnerable adult lacked capacity, among other things, to marry; consent to medical treatment; have sexual relations or decide her place of residence.
• R v C (2009) UKHL 42 — For the purposes of s30 Sexual Offences Act 2003: (1) lack of capacity to choose can be person or situation specific; (2) an irrational fear arising from mental disorder that prevents the exercise of choice could amount to a lack of capacity to choose; (3) inability to communicate could be as a result of a mental or physical disorder.
• Re AB; D Borough Council v AB (2011) EWHC 101 (COP) — (1) The test for capacity to consent to sex is set at a relatively low level: 'does she have sufficient rudimentary knowledge of that the act comprises and of its sexual character to enable her to decide whether to give or withhold consent?' (2) Capacity to consent to sexual activity is act-specific, not partner-specific; decisions to the contrary were based on a conflation of capacity to consent to sex and the exercise of that capacity. (3) The test requires an understanding and awareness of (a) the mechanics of the act, (b) that there are health risks involved, particularly the acquisition of sexually transmitted and sexually transmissible infections, and (c) that sex between a man and a woman may result in the woman becoming pregnant; however, not all criteria will apply to every type of sexual activity. (4) The test does not require an understanding (a) that sex is part of having relationships with people and may have emotional consequences, (b) that only adults over the age of ..→
• Re H; A Local Authority v H (2012) EWHC 49 (COP), (2012) MHLO 3 — "On 15 December 2011 I made an order declaring H’s incapacity in many respects and making best interests declarations as to her future care. In particular I made an order declaring that H lacked capacity to consent to sexual relations and a consequential order to protect her best interests which was very restrictive and undoubtedly amounts to the deprivation of liberty. In those circumstances I reserved my reasons for making these orders with a view to handing them down without the need for attendance of any party. This I now do." [Summary to follow.]
• Re MAB; X City Council v MB (2006) EWHC 168 (Fam) — MAB's parents had wanted to arrange a marriage for him in Pakistan. It was declared that MAB did not have capacity to marry; therefore any marriage, even if valid in Pakistan, would not be recognised as valid in English law. His parent's undertakings not to take him to a wedding or out of Britain were accepted and his passport was returned. Any assessment of capacity to marry must take into account the question of capacity to consent to sexual relations. This involved a low level of understanding, which must be same in its essentials as required by the criminal law under the Sexual Offences Act 2003.
• Re MM (An Adult); Local Authority X v MM (2007) EWHC 2689 (Fam) — Inherent jurisdiction case re vulnerable adult
• Re MM (An Adult) (2007) EWHC 2003 (Fam) — Inherent jurisdiction case re vulnerable adult. [Summary required.]
• Sheffield City Council v E (2004) EWHC 2808 (Fam) — HUSBAND AND WIFE — Marriage — Capacity to marry — Alleged patient wanting to marry — Local authority wishing to prevent marriage — Whether jurisdiction to apply best interests test. Since to establish capacity to marry required only the ability to understand the nature of the marriage contract and the duties and responsibilities that normally attached to marriage, there was no jurisdiction to consider whether any particular marriage was in an alleged patient's best interests. [ICLR summary.]

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