Gillick, Montgomery, DNACPR rulings and the Mental Capacity Act — explained for UCAT and medical school interviews
Book a Free ConsultationMedical ethics case law is one of the most heavily tested topics at UK medical school interviews and it underpins several of the scenario-based questions in the UCAT Situational Judgement Test. Applicants for 2026-27 entry are expected to move beyond the "four pillars" (autonomy, beneficence, non-maleficence, justice) and name the actual cases that shaped English medical law: Gillick v West Norfolk and Wisbech Area Health Authority [1985] UKHL 7 on children's consent, Montgomery v Lanarkshire Health Board [2015] UKSC 11 on informed consent, R (Tracey) v Cambridge University Hospitals NHS Foundation Trust [2014] EWCA Civ 822 and Winspear v City Hospitals Sunderland NHS Foundation Trust [2015] EWHC 3250 (QB) on DNACPR decisions, and Bell v Tavistock and Portman NHS Foundation Trust [2021] EWCA Civ 1363 on consent and gender identity. This guide sets out each case, the legal test it created, and how it is examined at interview and in the UCAT — with year-stamped facts checked against official law reports, GMC guidance and NHS sources as of August 2026.
"Medical ethics case law" refers to the body of court judgments — mostly House of Lords, Supreme Court and Court of Appeal decisions — that define how English law treats consent, capacity, confidentiality, and end-of-life care in a clinical setting. Unlike the four pillars framework, which is a philosophical structure, case law gives interviewers a concrete standard against which to test a candidate's reasoning: can you identify which precedent applies, explain the ratio (the legal reasoning), and apply it to a new, unfamiliar scenario? Medical school admissions tutors consistently report that candidates who can name a relevant case (for example "this is a Gillick competence question" or "the Montgomery test would apply here") score more highly than those who rely only on abstract principle-spotting, because naming the case demonstrates that the applicant has engaged with the subject beyond generic interview-preparation books.
Case law also matters because it changes. Bell v Tavistock is a 2021 Court of Appeal judgment; Montgomery is from 2015; the Mental Capacity Act 2005 Code of Practice was last updated in 2024. A page written even three or four years ago may cite an overturned or superseded position. This guide is dated to reflect the case law and admissions-test facts current as of August 2026, ahead of the 2026-27 UK medical school application cycle.
International applicants to UK medical schools face a distinct challenge with medical ethics case law: many come from jurisdictions built on civil law or codified statute, where court judgments do not create binding precedent in the way English common law does. A student from a civil-law system may be used to looking up a specific article of a health code for an answer, whereas the entire English approach to consent and capacity is built from a handful of named judgments — Gillick, Montgomery, Bolam, Airedale NHS Trust v Bland — that build on and sometimes overrule one another over decades. Interviewers do not expect international candidates to have studied law, but they do expect an understanding that "the leading case" is how the UK system establishes a rule, and internationally educated applicants who arrive without this context often lose marks not on the ethics itself but on the unfamiliar reasoning style: reasoning from a precedent forward, rather than downward from a written code.
The UCAT itself is sat by a large international cohort. The test is delivered at more than 130 Pearson VUE centres worldwide, including dedicated centres across the Gulf, South and East Asia, North America and continental Europe, which means the majority of UCAT candidates outside the UK never study English law before their test date. The Situational Judgement Test (SJT) section — one of the UCAT's four sections since Abstract Reasoning was withdrawn from the exam — is scored on judgement bands 1 to 4 rather than a numerical scale, and it is built directly around GMC-defined standards of professional behaviour, not codified statute. An international candidate who has only prepared using a rules-based or code-based mental model for ethics can struggle with SJT scenarios precisely because they are testing judgement against an evolving professional and legal standard, not a fixed rule.
Consent and capacity awareness also differs by country of prior education. In several jurisdictions, parental or guardian consent for anyone under 18 is treated as close to absolute; the English position — that a sufficiently mature under-16 can consent to their own treatment under Gillick competence, and that a competent 16 or 17-year-old's decision cannot always be overridden even by a parent — is unfamiliar and sometimes counterintuitive to applicants from those backgrounds. Similarly, the Mental Capacity Act 2005's presumption of capacity (a patient is assumed capable unless proven otherwise) inverts the default assumption used in some overseas systems, where incapacity may be presumed for elderly or unwell patients until family or clinicians confirm otherwise. International candidates preparing for medicine interviews or UCAT SJT practice should specifically rehearse applying the English "presumption of capacity plus best-interests" framework, rather than translating from the equivalent concept in their home country's system, because MMI examiners and the SJT mark scheme are both calibrated to UK legal and professional standards, not international equivalents.
For applicants sitting the UCAT overseas, Leading Tuition's international UCAT preparation programmes build this case-law and legal-reasoning literacy alongside standard section practice — see our UCAT guide for international students for test-centre and registration detail, and our UCAT tutoring service for structured SJT and case-law coaching.
Gillick competence takes its name from Gillick v West Norfolk and Wisbech Area Health Authority [1985] UKHL 7, a House of Lords ruling delivered in October 1985. Victoria Gillick, a mother of five, challenged a Department of Health circular advising doctors that they could, in certain circumstances, prescribe contraception to under-16s without informing parents. Gillick argued this was unlawful and undermined parental authority. She won at the Court of Appeal but lost, by a 3-2 majority, in the House of Lords.
Lord Scarman's leading judgment established the test still used today: "the parental right to determine whether or not their minor child below the age of sixteen will have medical treatment terminates if and when the child achieves sufficient understanding and intelligence to understand fully what is proposed." In other words, a child under 16 who demonstrates sufficient maturity, intelligence and understanding of the treatment (including its risks, benefits and implications) can consent to their own medical treatment, and a parent cannot veto that decision. Assessment of competence is case-specific: a child might be Gillick competent to consent to one treatment but not another, and competence can vary over time as understanding develops. This is precisely why interviewers favour Gillick-competence scenarios — they require the candidate to interrogate the facts of a specific case rather than apply a blanket age rule.
R (Axon) v Secretary of State for Health [2006] EWHC 37 (Admin) later reaffirmed and extended the Gillick principle, confirming that a Gillick-competent young person's right to confidential contraceptive and sexual health advice — without parental notification — survives even where a parent explicitly objects, provided the clinician judges the young person to be competent and it is in their best interests. Together, Gillick and Axon remain the two most commonly cited authorities for any medicine-interview question involving a minor requesting confidential treatment.
The Fraser Guidelines are frequently confused with Gillick competence, and interviewers specifically test whether candidates understand the distinction. Both originate from the same 1985 House of Lords judgment, but Lord Fraser's concurring opinion set out a narrower, five-part test that applies specifically to contraceptive and sexual health treatment for under-16s. A doctor can lawfully provide contraceptive advice or treatment to a person under 16 without parental consent only if satisfied that:
(1) the young person understands the advice being given; (2) the clinician cannot persuade the young person to inform their parents, or allow the clinician to do so; (3) the young person is likely to begin, or continue, having sexual intercourse with or without contraceptive treatment; (4) without contraceptive advice or treatment, the young person's physical or mental health is likely to suffer; and (5) the young person's best interests require the clinician to give contraceptive advice, treatment or both without parental consent.
The key distinction for interview purposes: Gillick competence is the general legal test for whether a minor can consent to any medical treatment; the Fraser Guidelines are a specific five-point checklist that applies only to contraception and sexual health. A candidate who can articulate this distinction — rather than treating the two terms as interchangeable, as many general online guides do — signals a genuinely precise understanding of the case law rather than a memorised soundbite.
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Book a Free Consultation Message us on WhatsAppMontgomery v Lanarkshire Health Board [2015] UKSC 11, decided by the Supreme Court on 11 March 2015, is the single most important consent case for current medicine applicants because it overturned decades of prior practice. The claimant, Nadine Montgomery, was a diabetic patient of small stature. Her obstetrician did not warn her of a 9-10% risk of shoulder dystocia (the baby's shoulders becoming stuck during vaginal delivery) because the doctor judged that disclosing the risk might lead the patient to request a caesarean section, which the doctor considered not clinically necessary. The baby suffered severe disability as a result of shoulder dystocia during birth.
Before Montgomery, consent cases were judged under the Bolam test (see below) — a doctor was not negligent for withholding information if a responsible body of medical opinion supported that decision. The Supreme Court in Montgomery rejected this approach for risk disclosure, ruling that a doctor "is under a duty to take reasonable care to ensure that the patient is aware of any material risks involved in any recommended treatment, and of any reasonable alternative or variant treatments." A risk is material if a reasonable person in the patient's position would likely attach significance to it, or if the doctor knows or should reasonably know that the particular patient would attach significance to it. This is often called the "material risk" or patient-centred test, and it is now the standard cited by the GMC in its 2020 "Decision making and consent" guidance (most recently updated 13 December 2024). Any interview question that begins "should the doctor have told the patient about the risk of..." is, in substance, a Montgomery question, and naming the case and the material-risk test is the strongest possible answer opener.
Do Not Attempt Cardiopulmonary Resuscitation (DNACPR) decisions are one of the most emotionally charged areas of medical ethics case law, and two Court of Appeal and High Court rulings now govern how doctors must involve patients and families.
R (Tracey) v Cambridge University Hospitals NHS Foundation Trust [2014] EWCA Civ 822 concerned Janet Tracey, a terminally ill cancer patient with an estimated nine months to live who was admitted to hospital after a car accident. Medical staff placed a DNACPR notice on her file without consulting her or her family. The Court of Appeal, led by Lord Dyson MR, ruled that "there should be a presumption in favour of patient involvement [and] there needs to be convincing reasons not to involve the patient" in a DNACPR decision. The Trust's failure to consult Mrs Tracey before the first DNACPR notice breached her Article 8 right to respect for private life under the European Convention on Human Rights. Distress at discussing resuscitation is not, by itself, a convincing reason to exclude the patient from the conversation.
Winspear v City Hospitals Sunderland NHS Foundation Trust [2015] EWHC 3250 (QB) extended the Tracey principle to patients who lack capacity to be consulted directly. Carl Winspear, a young man with severe cerebral palsy who lacked capacity, had a DNACPR notice placed on his file by a doctor who tried but failed to reach his mother by phone before a ward round ended. The High Court held that the Trust breached Mr Winspear's Article 8 rights by failing to consult his mother, as the person able to represent his views and best interests, before imposing the notice — the duty to consult where a patient lacks capacity is to their family, carer or welfare attorney, not merely a box to attempt and abandon. Together, Tracey and Winspear are the standard authorities interviewers expect for any DNACPR or "breaking bad news about resuscitation" scenario.
The Mental Capacity Act 2005 is the statutory framework (as distinct from case law) that governs decision-making for patients aged 16 and over who may lack capacity, and it sits alongside the case law above rather than replacing it. The Act sets out five statutory principles: (1) a person must be assumed to have capacity unless it is established that they lack it; (2) a person is not to be treated as unable to make a decision unless all practicable steps to help them do so have been taken without success; (3) a person is not to be treated as unable to make a decision merely because they make an unwise decision; (4) an act done, or decision made, for or on behalf of a person who lacks capacity must be done in their best interests; and (5) before the act is done or the decision made, regard must be had to whether the purpose can be achieved in a way that is less restrictive of the person's rights and freedom of action.
Capacity is assessed on a decision-specific and time-specific basis using a two-stage test: does the person have an impairment of, or disturbance in the functioning of, the mind or brain, and, if so, does that impairment mean they cannot understand, retain, use or weigh the relevant information, or communicate their decision? A patient can lack capacity for one decision (for example, managing complex finances) while retaining capacity for another (consenting to a straightforward procedure). Medicine interview panels frequently present a scenario — an elderly patient refusing treatment, a patient with a fluctuating mental illness, a patient under the influence of medication — and expect the candidate to work through this two-stage test explicitly rather than simply asserting "they have capacity" or "they don't."
Bell v Tavistock and Portman NHS Foundation Trust is a genuinely contemporary test of Gillick competence and is increasingly appearing in 2026-27 interview preparation because it shows the 1985 test being applied — and reaffirmed — nearly forty years later. In December 2020, the Divisional Court ruled that it was doubtful that a child under 16 could ever give valid consent to puberty-blocking treatment for gender dysphoria, and that court authorisation should usually be sought for 16 and 17-year-olds too, effectively creating a stricter standard than ordinary Gillick competence for this specific treatment.
The Court of Appeal overturned this ruling in September 2021 ([2021] EWCA Civ 1363), holding that the ordinary Gillick competence test remained the correct legal standard and that it was for clinicians, not the courts, to assess a young person's capacity to consent to puberty blockers on a case-by-case basis, exactly as with any other treatment decision. The Court of Appeal was critical of the Divisional Court's approach of setting out generalised guidance on capacity for this treatment area rather than being limited to Keira Bell's individual case. For interview purposes, Bell v Tavistock is a strong example to cite because it demonstrates that Gillick competence is not a fixed historical rule but a living legal test still being tested, litigated and reaffirmed by the highest courts in a genuinely current and sometimes controversial clinical area — precisely the kind of nuance interviewers reward over a memorised definition.
Beyond consent, capacity and DNACPR, three further cases recur across interview banks and UCAT SJT-style scenarios and are worth knowing by name and date.
Bolam v Friern Hospital Management Committee [1957] 1 WLR 582 established the original test for clinical negligence: a doctor is not negligent if their conduct is in accordance with a practice accepted as proper by a responsible body of medical opinion, even if other doctors would have acted differently. Bolam still governs diagnosis and treatment negligence generally, but — as explained above — Montgomery specifically removed risk-disclosure and consent decisions from Bolam's reach in 2015. Confusing the two is one of the most common interview errors: Bolam still applies to "did the doctor treat competently," while Montgomery applies to "did the doctor disclose the right information."
Airedale NHS Trust v Bland [1993] AC 789 is the House of Lords ruling that established it can be lawful to withdraw clinically assisted nutrition and hydration from a patient in a permanent vegetative state (PVS), even though this would result in death, because continuing treatment is not in the patient's best interests once there is no prospect of recovery. Tony Bland was injured in the 1989 Hillsborough disaster and remained in PVS for over three years before the ruling. The case is the foundational authority for "withdrawal of treatment" and "acts versus omissions" ethics questions, and it distinguishes lawful withdrawal of futile treatment from unlawful euthanasia.
Re A (Children) (Conjoined Twins: Surgical Separation) [2000] 4 All ER 961 concerned conjoined twins, referred to as Jodie and Mary, where separation surgery would save Jodie but cause Mary's death, while non-separation would likely result in both twins dying within months. The parents, for religious reasons, opposed the surgery. The Court of Appeal authorised the separation, reasoning that it was lawful on the basis of necessity and that the operation could be characterised as not primarily intended to kill Mary even though her death was a certain consequence. The case remains one of the most frequently cited in the UK for exploring the doctrine of necessity, the acts/omissions distinction, and conflicts between parental religious belief and clinical best-interests judgments — and it regularly appears in MMI ethics stations precisely because it has no comfortable answer.
| Case | Year & Court | Legal Principle Established |
|---|---|---|
| Bolam v Friern Hospital Management Committee | 1957 – House of Lords | Doctor not negligent if a responsible body of medical opinion supports the decision (still applies to treatment, not consent) |
| Gillick v West Norfolk & Wisbech AHA | 1985 – House of Lords | Under-16s can consent to treatment if sufficiently mature and understanding (Gillick competence) |
| Airedale NHS Trust v Bland | 1993 – House of Lords | Lawful to withdraw life-sustaining treatment from a PVS patient when not in their best interests |
| Re A (Conjoined Twins) | 2000 – Court of Appeal | Separation surgery lawful under necessity despite parental religious objection |
| R (Axon) v Secretary of State for Health | 2006 – High Court | Confidentiality for Gillick-competent under-16s upheld even against parental objection |
| Montgomery v Lanarkshire Health Board | 2015 – Supreme Court | Material-risk test for informed consent replaces Bolam for risk disclosure |
| R (Tracey) v Cambridge University Hospitals NHS FT | 2014 – Court of Appeal | Presumption in favour of involving patients in DNACPR decisions (Article 8) |
| Winspear v City Hospitals Sunderland NHS FT | 2015 – High Court | Family/carer must be consulted on DNACPR where the patient lacks capacity |
| Bell v Tavistock and Portman NHS FT | 2021 – Court of Appeal | Gillick competence reaffirmed as the correct test for consent to puberty blockers |
The UCAT — the University Clinical Aptitude Test used for 2027-entry applications by every UK medical school as well as several dental schools — is made up of four sections: Verbal Reasoning, Decision Making, Quantitative Reasoning, and the Situational Judgement Test (SJT). Abstract Reasoning was permanently withdrawn from the test, and the three cognitive subtests are each scored on a scale of 300-900, giving a combined maximum score of 2,700. The SJT is scored differently: candidates are placed into judgement bands 1 (best) to 4 (weakest), based on 69 scenario questions answered in 26 minutes, and it is delivered at more than 130 Pearson VUE test centres worldwide, making it directly relevant to the international applicants discussed above.
The SJT does not test knowledge of named cases directly — you will not be asked to identify Gillick v West Norfolk on the test itself — but the scenarios are built around exactly the professional and ethical judgement standards that this case law encodes: appropriateness of consulting patients and colleagues, escalating safety concerns, maintaining confidentiality, and respecting patient autonomy while safeguarding vulnerable individuals. According to the UCAT Consortium's own published guidance, several UK medical schools treat a Band 4 SJT result as a significant red flag in shortlisting, regardless of a candidate's cognitive subtest scores, because the SJT is intended to be a proxy for the professional judgement that GMC guidance and cases like Montgomery and Tracey require in practice. This is the reason Leading Tuition treats SJT preparation and ethics case-law knowledge as a single combined programme rather than two separate topics — understanding why Montgomery or Tracey were decided the way they were directly improves a candidate's instinct for the "best" and "worst" responses in an SJT scenario, because both are testing the same underlying judgement about patient involvement and disclosure.
For structured MMI-specific practice built on these same cases, see our guide to preparing for a medical school MMI interview and our bank of 50 real MMI scenarios and model answer frameworks. For UCAT score benchmarks by medical school, see our UCAT score requirements guide.
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Gillick competence comes from Gillick v West Norfolk and Wisbech Area Health Authority [1985] UKHL 7, in which the House of Lords ruled that a child under 16 can consent to their own medical treatment if they have sufficient understanding and intelligence to fully appreciate what is proposed. Lord Scarman's test means parental rights to veto treatment end once a child reaches that level of maturity. It is one of the most frequently asked ethics topics at UK medicine interviews because it forces candidates to balance autonomy, best interests and safeguarding in a single scenario, and interviewers expect applicants to name the case and explain the reasoning, not just the outcome.
Montgomery v Lanarkshire Health Board [2015] UKSC 11 replaced the old Bolam-based approach to risk disclosure with a patient-centred "material risk" test. The Supreme Court held that a doctor must take reasonable care to ensure a patient is aware of any risk a reasonable person in the patient's position would consider significant, or that the particular patient would attach significance to. The case involved a 9-10% risk of shoulder dystocia that was not disclosed to a diabetic mother of small stature. It is the leading authority interviewers expect for any consent-based ethics question.
R (Tracey) v Cambridge University Hospitals NHS Foundation Trust [2014] EWCA Civ 822 established a presumption in favour of involving patients in Do Not Attempt Cardiopulmonary Resuscitation (DNACPR) decisions, ruling that failing to consult Mrs Tracey breached her Article 8 right to respect for private life. Winspear v City Hospitals Sunderland NHS Foundation Trust [2015] EWHC 3250 (QB) extended this to patients lacking capacity, holding that clinicians must still consult a patient's family or carers before imposing a DNACPR notice unless there are convincing reasons not to. Together these cases are the standard reference for end-of-life consultation questions.
The Mental Capacity Act 2005 sets out five statutory principles: a person is assumed to have capacity unless proven otherwise, they must be helped to make their own decision before being treated as unable to, an unwise decision does not itself prove incapacity, decisions made for a person lacking capacity must be in their best interests, and any intervention should be the least restrictive option available. Medicine interview panels use MCA-based scenarios to test whether candidates can apply a structured legal framework rather than personal opinion when assessing whether a patient can refuse or consent to treatment.
Bell v Tavistock and Portman NHS Foundation Trust reached the Court of Appeal in 2021 ([2021] EWCA Civ 1363), overturning a 2020 High Court ruling that had cast doubt on whether under-16s could give valid consent to puberty-blocking treatment. The Court of Appeal held that Gillick competence remained the correct legal test, rejecting the idea that a separate, stricter standard should apply to this treatment. The case is a useful example for interviews because it shows Gillick competence being tested and reaffirmed nearly forty years after the original 1985 ruling, in a genuinely contemporary clinical context.
Leading Tuition provides specialist medicine interview and UCAT preparation built around exactly the case law and legal frameworks covered in this guide. Our tutors run structured ethics sessions covering Gillick competence, Montgomery, DNACPR case law, the Mental Capacity Act and the Four Pillars, using mock MMI stations and UCAT Situational Judgement practice so candidates can apply named cases confidently under pressure. We also support international applicants who are less familiar with English case-law reasoning. Rated 4.8/5 on Trustpilot. Book a free consultation at leadingtuition.co.uk/consultation or message us on WhatsApp.
Leading Tuition provides specialist medicine interview and UCAT coaching, including structured case-law and Situational Judgement Test preparation. Rated 4.8/5 on Trustpilot.
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