How does the UK choose its IBO team?

Students sit the British Biology Olympiad at school in January. The top scorers are invited to further training and assessment, 16 finalists go to a selection event at the University of Warwick around Easter, and four of them are chosen for the team. The sources we could read do not describe the scoring used to pick the four.

Who organises the British Biology Olympiad?

UK Biology Competitions (UKBC), a volunteer-run registered charity. The IBO lists the national organisation as British Biology Olympiad, hosted by UK Biology Competitions.

Students in Years 12 and 13 in England and Wales, Years 13 and 14 in Northern Ireland, S5 and S6 in Scotland, or the equivalent. Younger students may enter. Entry is through a teacher at a recognised school or college; individuals and tutoring companies cannot register.

Is this guide written by a UK participant?

No. It is an outline of the official picture from published sources, with tips from BiOGuide. We are looking for a UK olympiad participant or coach to write a firsthand guide and replace this one.

British Biology Olympiad (BBO): Official Outline of the UK Path to IBO

The United Kingdom sends four students to the International Biology Olympiad (IBO). At the 37th IBO in Vilnius, Lithuania (12 to 19 July 2026), the UK team won three silver medals and one bronze, according to the national organiser’s own report.¹ We could not check that against the IBO’s results file. This page outlines how the path to that team works according to the sources we could read. It is a map of the structure, not an insider’s account of what the papers and the final feel like.

Programme: British Biology Olympiad (BBO)
Organiser: UK Biology Competitions (UKBC), a volunteer-run registered charity^3,5
Who can enter: Sixth form students (Years 12 and 13 in England and Wales, or the equivalent), entered by a teacher³
Stages: BBO first round, online second round, team selection final, IBO team of four
Official website: ukbiologycompetitions.org
Language: Not stated in the sources we read; all official material is in English

The path at a glance

Stage	What happens	How sure we are
BBO first round	Two 45 minute online multiple choice papers sat in school in January	Good: official site and the IBO’s page agree
Online second round	Gold medallists may sit one 60 minute online paper in March	Low to medium: only the IBO’s undated page describes it; the official site speaks more loosely of further training and assessment
Team selection final	16 finalists spend about three days of practical and theory work at the University of Warwick around Easter	Good for the venue and the 16; the length comes from the IBO’s page
IBO team	Four students, with about five days of training before the IBO	Good for the four; the selection scoring is not published, and the training detail comes from the IBO’s page only

Stage 1: the British Biology Olympiad

The first round is the British Biology Olympiad itself: two multiple choice papers of 45 minutes each, taken online in school with a teacher invigilating.^2,3 Schools choose when to sit it inside a window. For the 2027 competition the window is 15 to 25 January 2027.³

Teachers register their students through the organiser’s website from 1 October. Only recognised schools and colleges can register; tutoring companies and individual students cannot. Entry is free for UK schools, and schools outside the UK pay 50 pounds per school.³ Most entrants are 17 or 18, in Years 12 and 13 in England and Wales, Years 13 and 14 in Northern Ireland or S5 and S6 in Scotland, and younger students are allowed to enter.³

The official site says the papers assume the common core of A level biology and reward problem solving more than recall, and that no special preparation is expected.³

Students receive Gold, Silver, Bronze, Highly Commended, Commended or Participation certificates. The boundaries are set using UK students only, and the organiser says about 80 percent of schools get at least one award, but it does not publish the percentage of students at each level.³ One school’s news page reports that in 2025 the bands were the top 5 percent for gold, then 10 percent silver, 15 percent bronze, 15 percent highly commended and 15 percent commended.⁷ That is a third-party report and we could not confirm it officially.

Stage 2: the second round

Here the sources do not line up neatly. The IBO’s page says gold medallists may sit a single 60 minute online paper in March.² The official BBO page does not mention that paper; it says only that the top scorers are invited, about two weeks after the BBO, to further practical and theory training and assessment.³ The IBO’s page is undated, so the second round may have changed. The sources we could read do not say how many students are invited or what score is needed.

A student must have sat the BBO to be considered for the team at all.⁴ For team selection the official site adds three conditions: the student must have studied in the UK for at least the past two years, must not have taken part in UK team selection before, and must not have attended an IBO.³ The organiser’s IBO page also gives the IBO’s own conditions of being under 20 and not yet at university, in wording labelled as the 2024 rules.⁴ No nationality rule is stated for the BBO itself.

Stage 3: the team selection final

Sixteen finalists go to a selection event at the School of Life Sciences at the University of Warwick.^2,6 The IBO’s page describes about three days of training and testing with both practical and theory elements.² The organiser’s report on the 2024 final mentions micropipetting, dissection and bioinformatics among the tasks.⁶ The official site says the team is chosen in the Easter holiday.³ We did not find the dates of the 2026 or 2027 final.

Stage 4: the IBO team

Four students are chosen from the 16.^4,6 The sources we could read do not say how the practical and theory results are combined to pick them. The IBO’s page says the team has about five days of training before the IBO, often including time at Kew Gardens and the Natural History Museum; no other source we opened confirms that, so treat it as a description that may be dated.² The organiser says the UK has competed at every IBO since 1998 and hosted the event at Warwick in 2017.⁴

Points for an Author

If you went through this programme yourself, these are the points we most need you to settle. They are grouped here so that nothing uncertain is buried in the text above.

Where the sources disagree

How many students enter. The official BBO page gives 15,221 students from 906 schools for “last year” without naming the year,³ the organiser’s 2026 IBO report says more than 18,000,¹ the IBO’s page says about 15,000,² and one school’s page gives 18,533 students from 1,053 schools for 2025.⁷ These may be different years or different ways of counting, so we do not pick one.
Whether there is an online second round. The IBO’s page describes a 60 minute online paper in March for gold medallists;² the official BBO page mentions only further training and assessment for top scorers.³
The award percentages. The organiser publishes none;³ the figures quoted above come from one school’s news page.⁷
Who stands behind the organiser. Older pages seen only in search results describe UK Biology Competitions as a special interest group of the Royal Society of Biology; the organiser’s current pages describe an independent charity registered in 2020.⁵
The website address. The IBO lists the address with “www”, which gave a security certificate error when we tried it; the address without “www” works.

Gaps a firsthand author could fill

How many students reach the stage after the BBO, and what score is needed.
How the four are chosen from the 16 finalists, and the dates of the next final.
Who writes the papers.
What the final at Warwick is actually like, how finalists prepare between January and Easter, and what students wish they had known.

A firsthand author can settle every one of these points. If that could be you, email us or read how it works.

BiOGuide tips for students aiming at this path

These are general tips from BiOGuide, not advice from a UK participant, and they apply to any student aiming at an IBO team.

Sit the official past papers under time. The organiser publishes BBO papers for 2019 to 2024 on its site, without answers or mark schemes.³ Two papers of 45 minutes is a fast pace, so practise with a clock.
Train problem solving on unfamiliar material. The BBO is described as rewarding reasoning over recall. Past IBO papers in our practice papers give you data and experiments you have not seen before.
Go beyond the A level core if you are aiming at the final. The IBO covers more than any school course. Our notes on cell and molecular biology, animal physiology, plant physiology, genetics and bioinformatics are a place to start.
Build practical skills early. The 2024 final included pipetting, dissection and bioinformatics, and the IBO has practical exams. Our practical notes cover common techniques.
Know the international format. The IBO preparation guide explains how the international exams work.
Ask your teacher in the autumn. Only teachers can register, and registration opens on 1 October. Dates and rules change every year, and the organiser decides, not us.

Official links and sources

UK Biology Competitions, report on the UK team at IBO 2026 (official national site, undated, published after 19 July 2026, in English). ukbiologycompetitions.org
International Biology Olympiad, country page for the British Biology Olympiad (in English). ibo-info.org. The page is undated, so we use it for the structure and say where it stands alone.
UK Biology Competitions, British Biology Olympiad page, current for the 2027 competition (official national site, in English). ukbiologycompetitions.org/british-biology-olympiad
UK Biology Competitions, International Biology Olympiad page (official national site, undated, quotes 2024 rules, in English). ukbiologycompetitions.org/international-biology-olympiad
UK Biology Competitions, about page (official national site, undated, in English). ukbiologycompetitions.org/about
UK Biology Competitions, report on the 2024 team selection (official national site, about April 2024, in English). ukbiologycompetitions.org
A school’s news page on its 2025 BBO results, 13 March 2025 (third party, not an official source, in English). wcsch.com

One more note on sources. We did not find a government page or an independent news report on the selection process, so this outline rests on the organiser, the IBO and one school page.

This outline was last checked on 8 October 2026 and will age. Spotted an error or out-of-date detail? Email r6394175@gmail.com.