IB vs A-Levels for Medicine: Which Do UK Medical Schools Prefer?

Medicine is the most competitive undergraduate course in the UK. Roughly 20,000 students apply for approximately 8,000 places each year, and the October UCAS deadline means personal statement, UCAT score, and academic grades all need to be in place by the same moment.

If you are studying the IB and planning to apply to medicine, you need to know exactly what UK medical schools require — and whether your qualification puts you at any advantage or disadvantage versus A-level students.

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Do UK medical schools prefer the IB or A-levels?

Neither. No UK medical school has a stated preference for either qualification. All major medical schools accept the IB, publish specific IB requirements, and evaluate IB applicants on the same criteria as everyone else.

The caveat is that the absolute majority of UK medicine applicants hold A-levels. IB medicine applicants are a small minority. This does not disadvantage them — admissions teams are well-versed in the IB — but it does mean that virtually all the guidance you will find on medicine applications is written with A-level students in mind. You need to do the translation work yourself.

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The non-negotiable requirement: Chemistry and Biology at HL

This is the single most important structural fact for any IB student considering medicine.

Almost every UK medical school requires Chemistry HL and Biology HL, both at grade 6 minimum. There is no workaround. A student who has Chemistry at HL and Biology at SL is not eligible at the vast majority of institutions, regardless of total score.

At A-level, the equivalent is Chemistry A-level plus Biology A-level, both typically at grade A minimum (with some schools accepting Physics or Maths instead of Biology).

If you are currently in Year 11 planning your IB subject choices and you want to keep medicine open, Chemistry HL and Biology HL are effectively mandatory. If you have already started the IB with Chemistry at HL but Biology at SL, your options are limited to a small number of medical schools — check each institution's page individually.

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IB requirements for every major UK medical school (2026 entry)

Medical School	IB Points Required	HL Requirements
Cambridge	40–42 (in practice 41–42)	7,7,6 at HL; Chemistry + one of Biology/Physics/Maths; in practice 7,7,7 for admitted students
Oxford	39	7,6,6 HL; Chemistry + one of Biology, Physics, or Maths
UCL	39	19 points from three HL subjects; Biology and Chemistry both at HL, one grade 7 and one grade 6
Imperial	38 (typical offer 39)	Chemistry and Biology both HL, both grade 6 minimum; English SL grade 5 required
King's College London	37–38	19 points at HL; Chemistry and Biology HL, minimum grade 6 in both
Edinburgh	37	7,6,6 HL including Chemistry + one further science
Manchester	37	7,6,6 HL including Chemistry or Biology + one further science
Bristol	36–37	Chemistry HL grade 6; Biology HL required
Sheffield	37	Chemistry and Biology HL
Leeds	36	Chemistry HL grade 6; Biology or Psychology HL
Liverpool	36	Chemistry HL; Biology HL or SL grade 5 (check current requirements)
Nottingham	36	Chemistry HL; Biology HL
Southampton	36	Chemistry and Biology HL
Birmingham	36	Chemistry HL; one further science HL
Newcastle	38	Chemistry HL grade 6; Biology HL grade 6
St Andrews	38	Chemistry + Biology or Maths HL
Glasgow	37–38	Chemistry HL; Biology HL
Dundee	36	Chemistry HL; Biology HL
Aberdeen	35	Chemistry HL; one science HL
Leicester	36	Chemistry HL; Biology HL
Exeter	36	Chemistry HL; Biology HL

Always verify directly with each institution — requirements change year to year and the specific HL conditions vary. The total score is only half the condition; the HL breakdown is equally binding.

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Which HL science to prioritise: Chemistry or Biology?

If for any reason you can only take one of the two at HL (which is strongly inadvisable for medicine), Chemistry takes priority at most UK medical schools. Chemistry is the more commonly "required" subject.

That said, an increasing number of schools specifically require Biology HL rather than just treating it as interchangeable. Bristol, for instance, specifically asks for Biology HL. Check each school's page individually.

In an ideal world — and this is the scenario that keeps all doors open — you take both Chemistry HL and Biology HL, leaving your third HL as a subject of your choice.

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Mathematics: which IB Maths course for medicine?

Most medical schools do not require Mathematics HL for the IB. However, if you take Mathematics, note that Mathematics: Analysis and Approaches is the appropriate course for a science background. Mathematics: Applications and Interpretations is considered less rigorous by top universities and may not satisfy requirements where Maths is listed as a permitted alternative to Biology (e.g. at Oxford, where it can substitute for Biology HL in the medicine offer).

For Medicine specifically, Maths is not mandatory — Chemistry and Biology are the focus. But for strong applicants keeping Oxford and Cambridge options open, Analysis and Approaches HL is the right choice.

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Does the IB affect your UCAT score?

No. The UCAT (University Clinical Aptitude Test) is a standardised aptitude test covering Verbal Reasoning, Decision Making, Quantitative Reasoning, Abstract Reasoning, and Situational Judgement. None of these components test A-level or IB subject content directly — they test cognitive and situational skills.

There is no data showing IB students systematically outperform or underperform A-level students on the UCAT. Your UCAT score is a function of preparation and aptitude, not qualification type.

The BMAT — which did include a knowledge-based section more aligned with A-level science content — was discontinued from 2024. The old concern that its knowledge paper might disadvantage IB students (who have fewer teaching hours per HL subject than A-level students) is now irrelevant.

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IB advantages for medicine applications

Breadth for the personal statement. The new UCAS three-question format requires you to write about extracurricular activities and what they taught you (Section 3). IB students who have completed the CAS (Creativity, Activity, Service) requirement and the Extended Essay have genuine material to draw on — and, crucially, practice at reflecting on experience meaningfully rather than just listing it.

Theory of Knowledge and medicine ethics. Medical school interviews frequently probe ethical reasoning, the basis of medical knowledge, and the limits of what doctors can know. TOK trains students to think about exactly these questions. It is not a direct advantage — but IB students who engaged genuinely with TOK are often comfortable in the kind of open-ended reasoning questions that medical interviews require.

Extended Essay. A 4,000-word independent research essay demonstrates research capability and academic writing. For students aiming for research-oriented medical schools or intercalated degrees, the EE is genuinely meaningful preparation.

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IB disadvantages for medicine applications

Fewer teaching hours per science subject. IB HL Chemistry covers approximately 240 teaching hours; A-level Chemistry covers approximately 360 hours. The content overlap is high but not identical. Some A-level topics — particularly in organic chemistry mechanisms and physical chemistry depth — are covered more extensively at A-level. This gap is manageable with self-study but is real.

No flexibility to triple-science. A-level students can take Chemistry, Biology, and a third science (Physics, Further Maths). IB students must include a language and a humanities subject in their six subjects. A student who would thrive with three sciences and a maths cannot access that configuration through IB.

Subject constraint at SL. IB students studying Chemistry HL, Biology HL, and a third HL subject must fill their three SL slots with subjects outside sciences. This means your language and humanities grades also appear on your UCAS application — weak SL grades are visible, even if medical schools don't require specific SL scores.

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What IB medicine applicants often get wrong

Thinking total score alone is enough. An offer of "37 points with 766 HL" is not satisfied by scoring 39 points with HL 655. The HL conditions are equally binding. Many IB students lose offers because their total score is fine but one HL grade falls short.

Not checking Biology HL specifically. If you have Chemistry HL but Biology at SL, you are ineligible at the majority of medical schools before they even look at your personal statement or UCAT score. This is a structural disqualification.

Underestimating the personal statement. IB students sometimes assume that a predicted score of 39–40 with Chemistry and Biology HL does the work of getting them interviews. It doesn't — not at competitive medical schools. The personal statement and UCAT are evaluated separately. A high predicted score gets your application read; the statement is what gets you shortlisted.

If you want to know exactly how your medicine personal statement reads to an admissions tutor — whether it demonstrates genuine clinical insight, appropriate reflection, and the qualities medical schools are actually looking for — Statementory reviews and annotates it line by line. Try the free preview to see how yours scores.