UKMLA Ethics & Law: The 12 Most-Tested SBA Scenarios
Ethics and law is the most predictable domain on the AKT. The 12 recurring scenarios — consent, capacity, Gillick, confidentiality, DVLA, candour, DNACPR, MHA vs MCA — with the rule and the trap for each.
Ethics and law is the domain medical students most often leave to chance — and the one where the AKT is most predictable. Clinical questions can come from anywhere across 430 conditions; ethics and law questions recur around a small set of principles and statutes, with answers anchored to GMC guidance and UK case law. Learn the rules and the traps, and these become some of the most reliable marks on the paper.
We go deep on consent and capacity in the dedicated Consent, Capacity & MCA guide; this piece maps the twelve scenarios that recur across the whole ethics-and-law domain.
The four principles
Most ethical SBAs are a contest between autonomy (the patient's right to decide), beneficence (acting in their interest), non-maleficence (avoiding harm) and justice (fairness, including resource allocation). When two options seem reasonable, the one that best respects a competent patient's autonomy — within the law — is usually intended.
The 12 most-tested scenarios
1. Consent and material risk (Montgomery). Since Montgomery v Lanarkshire (2015), consent is patient-centred: you must disclose the risks a reasonable patient in their position would want to know, not just what a body of doctors would disclose.
2. Capacity (Mental Capacity Act 2005). Capacity is decision- and time-specific, presumed present, and a person making an unwise decision still has capacity. Apply the two-stage test (is there an impairment of mind/brain, and can they understand, retain, weigh and communicate the decision?). Act in best interests only when capacity is genuinely lacking.
3. Children — Gillick competence and Fraser guidelines. A child under 16 who fully understands can consent (Gillick competent); Fraser guidelines specifically cover contraceptive/sexual-health advice. The trap: a competent child can consent to treatment, but a refusal of life-saving treatment can be overridden by someone with parental responsibility or the court.
4. Confidentiality and its limits. Confidentiality is the default. Disclose without consent only when required by law, or justified in the public interest (risk of serious harm). The exam loves the unlawful breach as a wrong answer.
5. Driving and the DVLA. It is the patient's legal duty to inform the DVLA of a relevant condition. Advise them to stop driving and notify; if they lack insight or continue against advice and won't inform the DVLA themselves, the doctor should inform the DVLA — having told the patient first.
6. Notifiable diseases and public health. Certain infections carry a statutory duty to notify the relevant authority — this overrides individual confidentiality.
7. Safeguarding (children and vulnerable adults). Suspected abuse triggers a duty to share information and escalate to the safeguarding lead; safeguarding overrides confidentiality.
8. Good Medical Practice and probity. GMC duties — honesty, integrity, declaring conflicts of interest, appropriate handling of gifts, and acting within your competence. Probity questions usually reward transparency and declaration.
9. Duty of candour. When something goes wrong, be open and honest, explain, and apologise. The related communication skills are in breaking bad news and difficult conversations.
10. End of life — DNACPR and best interests. A DNACPR is a clinical decision — it doesn't require the patient's consent, but you must consult and inform the patient (or, if they lack capacity, those close to them), per the Tracey judgment. The ReSPECT process frames this in practice.
11. Raising concerns and escalation. Patient safety comes first: if you witness unsafe practice, you have a duty to raise the concern through the appropriate route. The intended answer escalates appropriately rather than ignoring or confronting unilaterally.
12. Mental Health Act vs Mental Capacity Act. The MHA governs treatment of a mental disorder (Sections 2, 3, 5(2), 136); the MCA covers people lacking capacity for other decisions, including physical treatment. Choosing the wrong legal framework is a classic distractor — see the psychiatry and Mental Health Act guide.
How these are tested
Ethics SBAs usually ask for the "most appropriate next action." The right answer almost always: respects a competent patient's autonomy, stays within the law and GMC guidance, and favours talking to the patient, seeking consent, or escalating appropriately over acting unilaterally or breaching confidentiality without a lawful basis. When in doubt, the safe, transparent, patient-centred option wins.
Where MLA Prep fits
The reliable way to lock these in is applied practice — scenario after scenario until the rule is reflexive. MLA Prep's SBAs cover the ethics-and-law domain with worked, referenced explanations, free on two full topics — start free. Reasoning through the grey-zone options is exactly the skill in clinical reasoning for the UKMLA.
Frequently asked questions
Is there a lot of ethics and law on the UKMLA? It's a defined domain and reliably tested. Because it recurs around a small, predictable set of principles, it's high-yield for the time invested.
What law do I actually need to know? The Mental Capacity Act 2005, Mental Health Act basics, Gillick/Fraser, Montgomery consent, the limits of confidentiality, DVLA duties, notifiable diseases, and GMC Good Medical Practice.
What's the most common trap? Breaching confidentiality without a lawful basis, or overriding a competent adult's refusal. Both are popular wrong answers.
What's the best resource for UKMLA ethics? GMC Good Medical Practice for the rules, plus targeted SBA practice to apply them under exam conditions.