MRCEM Primary pass rate UK candidates

TL;DR. The MRCEM Primary pass rate for the 2024 calendar year was 57.4% (2,770 passes out of 4,824 sittings), almost identical to 58.0% in 2023. There is no separate “UK-only” Primary pass rate published, but the wider RCEM data is unambiguous: UK trainees pass College exams at 79.6% overall, UK medical graduates at 81.2%, and first-time sitters at 66.6%. The widely-quoted Reddit figure of “~25%” is a myth; the real risk is doing it as an international resit, not as a UK first-attempt candidate.

What is the MRCEM Primary pass rate for UK candidates right now?

The cleanest answer comes from RCEM’s Publication of Exam Pass Rate Data 2024, released in October 2025. Across all 4,824 MRCEM Primary SBA sittings in 2024, 57.4% passed. In 2023 it was 58.0% from 3,987 sittings. Statistically the two years are indistinguishable, which means the headline number you should plan against today is roughly 57-58%.

RCEM does not break the Primary down by UK vs international in the published report. But it does break all College exams combined down by trainee status and by primary medical qualification (PMQ), and both signals point the same way:

• UK trainees pass College exams at 79.6%.
• UK medical graduates (PMQ UK) pass at 81.2%.
• International medical graduates (PMQ IMG) pass at 46.6%.
• Candidates working inside the UK on exam day: 68.0%; outside the UK: 46.1%.

If you’re a UK trainee sitting your first Primary, your realistic personal pass probability sits comfortably north of 70% with honest preparation. If you’re an IMG sitting in India, Pakistan, Egypt, or the Gulf with no UK ED exposure, the same exam paper behaves more like a 45-50% paper. Same questions, different baseline. The numbers are not telling you the exam is harder for some people — they are telling you the same exam is being taken under very different conditions.

How does the 2024 figure compare with previous diets?

RCEM publishes the headline number annually. The diet-level scores (May, October, etc.) are not published in a tidy public table, but the annual rollups are. Here is the recent picture:

Source: RCEM Exam Pass Rate Data 2023 and 2024; RCEM Examinations Transformation update July 2023 for raw sitting volumes.

The signal you need from this table is stability. The Primary has hovered at 57-58% for two consecutive published reports. RCEM uses an Angoff standard-setting process specifically to keep the pass mark moving with paper difficulty, so a sudden “hard diet” rarely produces a 30% pass rate the way Reddit folklore implies. Sitting numbers are also climbing year on year as IMG demand for UK Emergency Medicine continues to grow — 4,824 sittings in 2024 is a 50% increase on the 2019 volume.

Is the “25% pass rate” claim on Reddit actually true?

No. We checked. The 25% number circulates in r/MRCEM, r/doctorsUK, and various WhatsApp groups, usually attached to phrases like “only 1 in 4 passes” or “the College fails most candidates.” Against the published data this is wrong in two ways.

First, the actual all-comers pass rate is 57.4%, not 25%. That includes every IMG sitting from a non-UK centre on their fifth attempt, not just well-prepared first-timers.

Second, the only number in the RCEM data that comes close to 25-30% is the resit rate: candidates on their second attempt pass at 31.4%, third attempt 31.3%, fourth-plus attempt 31.2%. So if you fail once, the conditional probability of passing your next sit drops sharply. That is the kernel of truth being garbled into “25% pass rate.”

The practical takeaway: treat your first attempt as the one that matters. The data swings from a 66.6% first-attempt pass rate to 31.4% on the second. Resits are not free retries — they are statistically the hardest version of this exam.

Why do UK candidates pass at a higher rate than international candidates?

The differential is real and statistically significant. RCEM names it explicitly in the 2024 report as “differential attainment” and links it to four overlapping factors:

• Language. Native English speakers pass at 64.4%, non-native at 47.5%. The Primary is heavily worded SBA reasoning, not pattern matching, so reading speed matters under a 60-second-per-question clock.
• Clinical context. Working inside a UK ED gives you the framing the questions are written in — what “refer to surgeons,” “discuss with HSO,” or “NICE CKS” actually means in workflow. Candidates working in UK EDs pass at 68.0% vs 46.1% outside.
• Curriculum familiarity. UK graduates have sat anatomy/physiology SBAs in this exact format at finals. IMGs from MBBS programmes built on essay or oral exams are learning the format and the content at the same time.
• Resources. UK trainees typically get study leave, hospital library access, and senior colleagues who have recently passed. IMGs are more likely to self-fund question banks and study around clinical work in a different time zone.

None of this is a comment on knowledge or ability — it’s about test-taking conditions. RCEM has accepted the gap and committed to its “Fairer Training Cultures” programme, but for an individual candidate booking a sitting in the next 12 months, the gap is what it is. Plan around your actual conditions, not the headline rate.

What does the Primary actually test?

One paper, 180 single-best-answer questions, 3 hours. No negative marking. Mapped to the RCEM Basic Sciences Curriculum (June 2010) and delivered by Pearson VUE / Surpass at test centres worldwide.

The question split is fixed:

• Anatomy — 60 questions
• Physiology — 60 questions
• Pharmacology — 24 questions
• Microbiology — 17 questions
• Evidence-based medicine / statistics — 10 questions
• Pathology — 9 questions

Two-thirds of your marks therefore live in anatomy and physiology. Candidates who fail almost always fail on these two papers, not on the pharmacology and microbiology long tail. If you only have time to do one thing well, do anatomy and physiology with clinical scenarios. The questions are written to test applied reasoning — “a patient sustains this injury to this nerve, what will you see on examination?” — not isolated factual recall.

What is the pass mark, and how is it set?

There is no fixed pass mark out of 180. RCEM uses the Angoff method: a panel of consultant emergency physicians judges, question by question, what proportion of “minimally competent” candidates should get each item right. The sum becomes the cut score for that diet.

In practice, recent Primary pass marks have sat in a narrow band — most diets between 2021 and 2025 have landed between 103 and 110 out of 180. The May 2025 diet was 108. Don’t anchor on “60%” — that’s roughly the right ballpark but not the actual standard. Different diets have different papers, and the Angoff process means a slightly harder paper carries a slightly lower pass mark, and vice versa.

Because there’s no negative marking, you should answer every question. A blind guess across five options is worth 20% — better than zero. Mark anything you’re unsure of for review and come back to it; the system allows free navigation within the 3-hour window.

How long should I revise for?

Honest peer-to-peer answer: it depends entirely on how recent your basic sciences are.

• UK F2/CT1 still close to medical school finals: 10-12 weeks of focused work alongside clinical commitments is usually enough.
• UK F3+ or returning to academic content after a few years on the floor: 4-6 months realistic.
• IMG with several years between MBBS and now: 6 months is standard advice from established prep providers (Bromley, Pastest, MRCEM Success), and we agree with it.

The dominant resource for almost every passing candidate we hear from is a question bank with at least 2,000 SBAs — most use Pastest or MRCEM Success — run twice. First pass to learn, second pass to drill timing and exposure. Anatomy benefits from a focused textbook (Last’s or a regional anatomy atlas) because question-bank explanations alone are too thin for the surface anatomy and brachial-plexus level of detail RCEM examines. A face-to-face or live-online crash course in the final 4-6 weeks is optional but consistently mentioned by passing candidates as the thing that closed the gap on EBM and pathology.

What are the most common reasons candidates fail?

Pulling together the RCEM feedback letters that go to failed candidates, the Reddit and Facebook post-mortems, and the patterns prep providers report:

• Underestimating anatomy. 60 questions is a third of the paper and the highest-yield section. Candidates who scrape a pass in physiology and crash in anatomy fail.
• Memorising obscure facts instead of reasoning. The exam tests applied knowledge — “injury to this nerve causes which deficit” — not rare syndromes. Time spent on zebras is time stolen from horses.
• Skimping on EBM and pathology. These sections are small (19 questions combined) but the content is bounded and predictable. Most candidates can pick up 14-16 of those marks for two weekends of work.
• Sitting too early. Booking the next available diet to “force yourself to revise” works for some people and ruins others. Honest gap analysis four weeks out is more useful than a deadline.
• Resit fatigue. Candidates who fail and immediately re-book often regress because they revise the same way at the same depth. If you failed, change the method, not just the date — a different question bank, a structured course, or a study partner.
• Question-bank percentage chasing. A 75% average on Pastest is not the same as a 75% on the real paper. Candidates over-fit to their bank and underprepare for unfamiliar question stems. Mock papers under timed conditions are the more reliable predictor.

Does failing the Primary affect my training progression?

For UK ACCS-EM trainees: you need to pass the Primary before progressing into Higher Specialty Training (ST4). It is not formally tied to ARCP for ACCS years in the way the Royal College of Physicians ties MRCP Part 1, but most TPDs expect Primary done by end of CT2/ST3 and will flag delays at ARCP. Six attempts are allowed in total.

For IMGs aiming at ACCS-EM via the CESR/portfolio route: a Primary pass strengthens your application materially and is often a soft prerequisite at interview, even when not formally required.

For everyone: the Primary pass remains valid for seven years to complete the rest of MRCEM (SBA + OSCE). If you pass in November 2026, you have until November 2033 to complete the Membership.

How should I interpret these numbers for my own decision?

Three calibration points worth saying plainly:

• If you are a UK trainee sitting first time with three months of structured preparation and a question-bank average above 65%, your personal pass probability is closer to 80% than the headline 57%.
• If you are an IMG sitting from outside the UK on your second attempt, your conditional probability is closer to the published resit rate (31%) than to anything more comforting. The honest move is to push the date back and rebuild, not to re-sit on the same prep.
• The pass mark moves with the paper. A “hard diet” rumour after sitting day is almost always just nerves; the Angoff process is designed to neutralise that.

Once you have your Primary, your next decision is when to attempt the MRCEM SBA — which currently sits at a much sterner 30.9% pass rate and is the actual choke point of Membership. Treat the Primary as your warm-up for the longer game, not the hardest exam you will sit.

Where do I go next?

If you want a structured plan calibrated to UK pass-rate realities — anatomy and physiology question packs, EBM crash content, and timed mock papers built around the Angoff standard — start at EM Final Exams. Everything is written by UK consultants and senior trainees who have sat these papers in the last few years.

Facts last verified 30 May 2026. Primary source: RCEM Publication of Exam Pass Rate Data 2024 and RCEM MRCEM Exams.

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