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The Ultimate Medicine Ethics Guide

Everything below is on this page — the four pillars, a five-step answer structure, six worked dilemmas and the frameworks UK interview circuits expect. No email needed to read it.

The four pillars defined, with what each one requires and where it conflicts

A five-step structure for answering any ethics station

Six worked dilemmas with the points a strong answer covers

The frameworks worth memorising — four pillars, SPIES, SPIKES, ICE, STAR

The mistakes that most reliably cost marks in ethics stations

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Ultimate Medicine Ethics Guide cover

What are the four pillars of medical ethics?

The four pillars of medical ethics are autonomy, beneficence, non-maleficence and justice. Autonomy is the patient’s right to make decisions about their own care, including refusing treatment. Beneficence is the duty to act in the patient’s best interests. Non-maleficence is the duty to avoid causing harm, including harm caused by doing nothing. Justice is fairness — treating like cases alike and distributing finite resources equitably. No pillar automatically outranks another, which is precisely why interviewers build scenarios where two of them collide.

The four pillars in practice

For each pillar: the definition, what it actually requires of a clinician, a worked application, and the pillar it most often collides with.

1. Autonomy

Autonomy is a patient’s right to make decisions about their own body and care — including the right to refuse treatment that would clearly benefit them.

What it requires
Consent has to be informed, voluntary, and given by someone with capacity. In England and Wales the Mental Capacity Act 2005 says capacity is assumed unless shown otherwise, is decision-specific rather than global, and that an unwise decision is not on its own evidence of incapacity. For under-16s the question is Gillick competence: does this particular child understand this particular decision?
Worked example
A Jehovah’s Witness refuses a life-saving blood transfusion. Autonomy means her refusal stands if she has capacity. The clinician’s job is to check that she understands the consequences, explore alternatives, and document the conversation — not to find a way around her.
Where it conflicts
Autonomy versus beneficence is the collision interviewers set up most often. Say out loud that respecting a refusal can feel like failing to do good, and that the resolution is almost always more conversation rather than overriding the patient.

2. Beneficence

Beneficence is the duty to act in the patient’s best interests — to do positive good, not merely to avoid causing harm.

What it requires
It requires you to know what the evidence supports, to weigh benefit against burden for this patient rather than for patients in general, and to advocate for the treatment you believe is right even when it is inconvenient to arrange.
Worked example
You recommend a treatment with substantial benefit but a real complication rate. Beneficence says: explain the benefit clearly, quantify the risk honestly, recommend a course of action rather than hiding behind neutrality — and then respect whatever the patient decides.
Where it conflicts
Beneficence collides with autonomy when a patient declines the thing that would help, and with justice when the best thing for your patient consumes a resource another patient also needs.

3. Non-maleficence

Non-maleficence is the duty to avoid causing harm — "first, do no harm" — including harm done by inaction.

What it requires
It covers avoiding treatment whose burden outweighs its benefit, working within the limits of your competence, and escalating unsafe practice. Staying quiet about a safety concern is a way of causing harm, not a way of avoiding it.
Worked example
You see a colleague make a clinical error. Non-maleficence requires you to act — first by making the patient safe, then by raising the concern. Professional courtesy is not a reason to leave a patient at risk.
Where it conflicts
Non-maleficence and beneficence are two sides of the same weighing exercise: almost every treatment does some harm, so the real question is whether the expected good outweighs it for this patient.

4. Justice

Justice is fairness — treating like cases alike, distributing finite resources equitably, and not letting a patient’s characteristics change the standard of care they receive.

What it requires
It has three strands worth separating in an answer: distributive justice (who gets the scarce resource), procedural justice (was the decision made by a fair and transparent process), and non-discrimination (would you have made the same call for a different patient?).
Worked example
Allocating a transplant organ. Justice requires the decision to rest on clinical need and expected benefit, not on wealth, social status, or how sympathetic the patient seems.
Where it conflicts
Justice is the pillar candidates forget. Any scenario involving cost, waiting lists, staffing, or a treatment the health service does not fund is a justice scenario — name it explicitly and you immediately sound more complete than the candidate who only discusses the patient in front of them.

How do you structure an answer to an ethics station?

Five steps. In a six-minute MMI station that is roughly a minute each, with time left for the follow-up question the assessor will almost certainly ask.

  1. 01

    Restate the dilemma in one sentence

    Open by naming the conflict, not by narrating the scenario back. "The tension here is between respecting her confidentiality and protecting a child who may be at risk." This buys you thinking time and tells the assessor immediately that you have found the actual problem.

  2. 02

    Name the stakeholders

    Patient, family, the clinical team, other patients competing for the same resource, and the wider public. Candidates who only consider the patient in front of them cap their own score, because half the scoring rubric is about breadth of perspective.

  3. 03

    Name only the pillars genuinely in tension

    Two pillars usually collide; listing all four to prove you memorised them reads as box-ticking. Say which two are pulling against each other and why. Add the relevant professional or legal frame if you know it — capacity, confidentiality and its limits, safeguarding — but do not bluff law you are unsure of.

  4. 04

    Argue both sides before you lean either way

    Give the strongest version of the position you will not take. Assessors score the quality of the reasoning, not which conclusion you reach, and a candidate who can steelman the other side is demonstrating exactly the skill the station exists to test.

  5. 05

    Land somewhere, and say what you would actually do next

    Finish with a position and a concrete first action — who you would talk to, what you would check, when you would escalate. "It depends" without a landing is the single most common way strong reasoning still scores badly. Fence-sitting is not balance.

The frameworks worth memorising

Five acronyms cover most of what an interview circuit asks. Learn what each is for — using the wrong framework is as obvious to an assessor as using none.

Four Pillars

Autonomy, Beneficence, Non-maleficence, Justice

Any ethical dilemma. Name only the pillars actually in tension.

SPIES

Seek information, Patient safety, Initiative, Escalate, Support

A colleague who is struggling, unsafe, or behaving unprofessionally. It stops you jumping straight to reporting someone.

SPIKES

Setting, Perception, Invitation, Knowledge, Emotions, Strategy

Breaking bad news in a role-play station.

ICE

Ideas, Concerns, Expectations

Any patient conversation. Explore all three before you start explaining anything.

STAR

Situation, Task, Action, Result

"Tell me about a time" questions only — not ethical dilemmas. Make the Action yours, not the team’s.

Worked ethical scenarios

Six dilemmas of the kind UK MMI and panel circuits use, each with the pillars in tension, the points a strong answer covers, and the answer that loses marks.

Scenario 01

A 15-year-old asks for contraception and does not want her parents told

The question

“A 15-year-old comes to a GP surgery asking for contraception. She is clear that she does not want her parents to know. What do you weigh up?”

Pillars in tension: Autonomy vs non-maleficence, with confidentiality and safeguarding running underneath

What a strong answer covers

  • Start with capacity, not with age: the question is whether she is Gillick competent for this specific decision — does she understand the advice, the risks and the alternatives?
  • Confidentiality is the default even for a minor, and telling her that up front is what makes her willing to disclose anything at all.
  • Explore, without leading: who is the partner, how old are they, is the relationship consensual, is anyone pressuring her. Age gaps and coercion are the safeguarding red flags that change the answer.
  • Encourage — but do not require — her to involve a parent or another trusted adult.
  • State the limit clearly: if there is a real risk of significant harm, confidentiality gives way to safeguarding, and you would tell her that you were going to share the concern and with whom.

What loses marks

Announcing that she is under 16 so her parents must be told. That both misstates the position and guarantees the next teenager tells the clinician nothing.

Scenario 02

A competent adult refuses a life-saving transfusion

The question

“A Jehovah’s Witness is bleeding after surgery and refuses a blood transfusion. She is fully conscious and understands what you have told her. What do you do?”

Pillars in tension: Autonomy vs beneficence

What a strong answer covers

  • A capacitous adult may refuse any treatment, for any reason or none, even where the refusal is likely to be fatal. That is the settled position, not a grey area.
  • Check capacity properly rather than assuming it is absent because the decision is one you would not make: can she understand, retain, weigh and communicate the decision?
  • Explore alternatives seriously — cell salvage, tranexamic acid, iron, non-blood volume expanders — because taking the refusal seriously means working within it, not around it.
  • Establish what she has already documented (an advance decision), and involve senior colleagues and, where time allows, the trust’s ethics or legal team.
  • Acknowledge the emotional weight on the team. Recognising that clinicians find this hard is a maturity marker, not a weakness.

What loses marks

Looking for a technicality that lets you transfuse anyway, or waiting until she loses consciousness and then treating. Both convert a difficult decision into an assault.

Scenario 03

You think a colleague is drinking before shifts

The question

“You are a medical student on placement. You smell alcohol on a junior doctor twice in one week and notice they seem distracted on the ward round. What do you do?”

Pillars in tension: Non-maleficence and patient safety vs loyalty to a colleague

What a strong answer covers

  • Seek information first: you have two observations, not a diagnosis. Is there another explanation? Has anyone else noticed?
  • Patient safety comes before everything else — if you believe a patient is at immediate risk, that risk is addressed now, not after you have gathered more evidence.
  • Take initiative appropriate to your position: as a student, that means speaking to your clinical supervisor, not confronting the doctor alone in a corridor.
  • Escalate through the right channel — supervisor, then educational lead — and be honest that you may be wrong.
  • Support the colleague. A doctor with a drinking problem is unwell; the aim is to get them help as well as to protect patients. Say this explicitly, because it is the half most candidates omit.

What loses marks

Either "I would report them to the GMC immediately" or "it is not my place to say anything". The first skips four steps; the second is a failure of the duty you are being tested on.

Scenario 04

A family asks you not to tell the patient their diagnosis

The question

“The family of an elderly man with a new cancer diagnosis asks you not to tell him, saying the news will destroy him. He has capacity and has not said he does not want to know.”

Pillars in tension: Autonomy vs beneficence, with an undercurrent of cultural humility

What a strong answer covers

  • The duty of confidentiality and of honesty runs to the patient. Information about his diagnosis is his, and the family cannot consent or refuse on his behalf while he has capacity.
  • Take the family’s fear seriously rather than dismissing it — they usually know something real about how he receives bad news, and they are frightened too.
  • Find out what he wants: patients may choose not to be told, and asking "how much would you like to know?" respects autonomy in both directions.
  • Use a structured approach to the conversation (SPIKES) and offer to have the family present when he is told.
  • Recognise that in some cultures diagnosis is disclosed collectively; respect that without letting it override an individual patient’s expressed wish.

What loses marks

Agreeing to the family’s request to keep the peace, or telling the patient immediately to prove a point about autonomy. Both skip the step of asking him what he wants.

Scenario 05

A treatment that would help your patient is not funded

The question

“A drug would probably extend your patient’s life by several months, but it is not routinely funded. The patient has read about it and is asking why they cannot have it.”

Pillars in tension: Justice vs beneficence

What a strong answer covers

  • Name the justice problem out loud: funding one patient’s treatment is a decision about other patients too, because the budget is finite and shared.
  • Distinguish "not proven" from "not affordable" — they are different arguments and candidates routinely blur them.
  • Describe the fair process as well as the outcome: published appraisal criteria, individual funding requests, appeal routes, clinical-trial eligibility.
  • Be honest with the patient about why, rather than hiding behind the system. Honesty is a professional obligation even when the answer is unwelcome.
  • Advocate: writing an individual funding request, or referring for a trial, is what beneficence looks like once you have accepted the justice constraint.

What loses marks

Saying rationing is unfair and the doctor should fight for their patient regardless. It ignores the patients the money would otherwise have treated, and misses the whole pillar under test.

Scenario 06

Capacity and an unwise discharge decision

The question

“An 84-year-old woman living alone wants to go home after a fall. The physiotherapist thinks she is unsafe at home. Her daughter wants her to move into residential care.”

Pillars in tension: Autonomy vs non-maleficence, with capacity as the hinge

What a strong answer covers

  • Everything turns on capacity for this specific decision. If she has it, an unwise choice is still hers to make — the law protects the right to make bad decisions.
  • Capacity is not all-or-nothing and can fluctuate; assess it properly and at her best moment, with hearing aids, glasses and no acute delirium.
  • Reduce the harm instead of removing the choice: home assessment, rails and equipment, care package, falls alarm, follow-up.
  • Handle the daughter honestly and kindly. She is not the decision-maker while her mother has capacity, but her fear is legitimate and she will be doing the caring.
  • If capacity is absent, the decision moves to best interests — which still asks what this woman would have wanted, not what is most convenient for the ward.

What loses marks

Treating the daughter as the decision-maker, or treating "unsafe at home" as proof that the patient lacks capacity.

Key ethical topics, and what to say about them

The recurring themes across UK interview circuits — stated as positions rather than listed as headings.

Consent, capacity and confidentiality

  • Valid consent needs three things: capacity, sufficient information, and freedom from coercion. Missing any one of them makes the consent invalid however many forms were signed.
  • Capacity is decision-specific and time-specific. A patient can lack capacity to decide about surgery and retain it for deciding what to eat.
  • Confidentiality is a strong default, not an absolute. It gives way where the law requires disclosure, where there is a serious risk of harm to the patient or someone else, or where the patient consents.
  • Where a patient lacks capacity and has no valid advance decision, decisions are made in their best interests — which includes their past wishes, values and beliefs, not just the clinical optimum.

Professionalism and raising concerns

  • Patient safety outranks hierarchy. Seniority is not a reason to leave an unsafe situation alone, and "I was the most junior person there" is not a defence.
  • Honesty is not optional after a mistake. The professional expectation is prompt, open disclosure to the patient and the team — concealment is treated far more seriously than the original error.
  • Address personal-conduct concerns informally first; escalate patient-safety concerns immediately. Getting these the wrong way round is the classic error in both interviews and the UCAT SJT.
  • Professional obligations extend outside work: social media, identifiable patient details, and personal conduct can all affect registration.

Resource allocation and public health

  • Any scenario mentioning cost, waiting lists, staffing or funding is a justice scenario. Say so — most candidates never name the pillar.
  • A fair allocation decision needs a fair process as well as a defensible outcome: transparent criteria, consistency between similar patients, and a route to appeal.
  • Public-health measures trade individual liberty against population benefit. The strongest answers ask whether the measure is proportionate and the least restrictive option available, rather than declaring for one side.
  • Health inequality is an ethics topic, not a politics topic. Two patients with the same condition and different postcodes having different outcomes is a justice failure worth naming.

Beginning and end of life

  • End-of-life scenarios usually turn on the difference between withdrawing treatment that is no longer benefiting a patient and acting to end life — these are legally and ethically distinct, and conflating them costs marks.
  • A valid advance decision refusing a specific treatment is binding; a general statement of wishes guides a best-interests decision but does not bind it.
  • Assisted dying is a live question the panel may ask about. There is no expected verdict, but there is an expected structure: define what is being proposed, give the strongest argument on both sides, and be clear which safeguards would change your view.
  • Do not claim certainty about your own moral position and then refuse to engage with the counter-argument. That reads as inflexibility, which is exactly what the station screens for.

Mistakes that cost marks in ethics stations

  • Listing all four pillars to prove you know them, instead of naming only the two actually in tension.
  • Reaching no conclusion at all. Balance means arguing both sides then landing; it does not mean refusing to decide.
  • Answering the emotional scenario clinically — acknowledging distress before problem-solving is part of the mark scheme, not an optional courtesy.
  • Quoting law you are not sure of. "I believe there is a legal framework here and I would check it" scores better than a confidently wrong statute.
  • Forgetting justice. Cost, capacity of services and the other patients on the list are usually the missing half of the answer.
  • Treating a colleague scenario as a reporting decision. Seek information, secure patient safety, and support the colleague as well.
  • Rehearsing scripts. Assessors interview all day and can hear a memorised answer immediately; learn the structure, not the words.

Frequently asked questions

Autonomy, beneficence, non-maleficence and justice. Autonomy is the patient’s right to decide about their own care, including refusing treatment. Beneficence is the duty to act in their best interests. Non-maleficence is the duty to avoid causing harm, including harm caused by inaction. Justice is fairness — treating like cases alike and distributing finite resources equitably. The framework comes from Beauchamp and Childress and is the standard structure for ethical reasoning in UK medical and dental school interviews and in the UCAT Situational Judgement Test.

Keep reading

Practise these out loud, not on paper

Ethical reasoning is a performance skill under time pressure. Book a mock interview with a tutor who sat these stations, or take the PDF version of this guide with you.

Reviewed by Isaac Butler-King, medical student at the University of Glasgow. Last reviewed: 15 August 2026

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