Medical ethics is the single highest-yield topic in this module. Ethical scenario questions appear in virtually every NHS interview, and the four pillars provide the universal framework for reasoning through any ethical dilemma the panel can throw at you. If you only study one topic from this module, make it this one.
Pillar 1: Autonomy
Autonomy is the principle that competent adult patients have the right to make their own decisions about their healthcare, including the right to refuse treatment, even if that decision seems unwise to the medical team. Respecting autonomy means providing patients with all the information they need to make an informed decision (risks, benefits, alternatives, and the option of doing nothing), confirming they understand, and then respecting their choice.
Key legal cases: Montgomery v Lanarkshire Health Board (2015) — the landmark Supreme Court ruling that established doctors have a duty to inform patients about all “material risks” of a proposed treatment. This replaced the older “Bolam test” standard for consent. Know this case by name — it comes up in interviews.
Consent: Informed consent is a process, not a signature on a form. It requires that the patient has capacity to make the decision, has been given adequate information, and is not acting under duress. Consent can be written, verbal, or implied.
Capacity: Assessed under the Mental Capacity Act 2005. A person lacks capacity if they cannot understand the information relevant to the decision, retain that information, weigh it up, or communicate their decision. Capacity is decision-specific and time-specific — a patient may have capacity for some decisions but not others.
Limits of autonomy: Autonomy is not absolute. It may be overridden in specific circumstances, such as when a patient’s decision poses a serious risk to others (e.g., notifiable infectious diseases), in cases involving the Mental Health Act, or in public health emergencies. Gillick competence applies to children under 16 who demonstrate sufficient understanding.
Interview application: When the panel presents a scenario where a patient refuses treatment, your answer should demonstrate respect for their autonomy while ensuring they have full information, capacity, and are not under pressure. Use the phrase “I would respect the patient’s autonomous decision” naturally in your answer.
Pillar 2: Beneficence
Beneficence is the duty to act in the patient’s best interest — to actively promote their wellbeing and provide treatments that offer genuine benefit. It goes beyond simply avoiding harm; it requires doctors to proactively seek the best outcome for each patient.
In practice: Prescribing evidence-based treatments, referring to specialists when appropriate, advocating for the patient within the MDT, ensuring follow-up arrangements are in place, and considering the patient’s holistic needs (physical, psychological, social).
Tension with autonomy: Beneficence can conflict with autonomy when a patient refuses a treatment that the medical team believes would benefit them. In these situations, autonomy generally takes precedence for competent adults. The role of the doctor is to ensure the patient is fully informed, not to override their decision.
Legal reference: Bolam v Friern Hospital Management Committee (1957) — established the “Bolam test” for determining whether a doctor acted in accordance with a responsible body of medical opinion. While partially superseded by Montgomery for consent, the Bolam test remains relevant for assessing standard of care.
Pillar 3: Non-Maleficence
Non-maleficence means “do no harm.” Every medical intervention carries some risk, so non-maleficence requires doctors to carefully weigh the potential benefits against the risks and avoid interventions where the harm outweighs the benefit. This includes over-investigation, unnecessary procedures, and treatments with disproportionate side effects.
In practice: Avoiding unnecessary investigations, considering drug interactions and side effects, not performing procedures outside your competence, recognising when further treatment may cause more suffering than benefit (e.g., in end-of-life care).
Interview application: Non-maleficence comes up frequently in scenarios involving over-treatment, futile interventions, and end-of-life discussions. If the panel presents a scenario where a family is demanding further active treatment for a patient who is clearly dying, your answer should demonstrate understanding of non-maleficence alongside compassionate communication.
Pillar 4: Justice
Justice in medical ethics refers to the fair and equitable distribution of healthcare resources. The NHS operates with limited resources and unlimited demand, so doctors must make decisions that are fair to all patients, not just the individual in front of them. Justice also means treating all patients equally regardless of age, gender, ethnicity, social status, or personal beliefs.
In practice: Allocating hospital beds and ITU capacity fairly, not prioritising “likeable” patients over others, ensuring equal access to services for disadvantaged populations, making cost-effective treatment choices, and being transparent about resource limitations.
Interview application: Justice questions often appear as resource allocation dilemmas (“there is one ITU bed and two patients who need it”) or questions about health inequalities. Demonstrate that you understand the tension between individual patient needs and population-level fairness.
Using the Four Pillars in Interview Answers
When presented with an ethical scenario, explicitly reference the relevant pillars in your reasoning. A high-scoring structure looks like this: (1) identify the ethical tension (which pillars are in conflict?), (2) apply each relevant pillar to the scenario, (3) consider the legal and professional framework (GMC guidance, Mental Capacity Act, Duty of Candour), (4) describe what you would actually do, and (5) reflect on the outcome or what you would learn.
- Exercise: Work through 5 ethical scenarios identifying which pillars are in play and which should take priority.
- Resource: Four Pillars Summary Card + Ethics Decision Tree Flowchart (printable).