<p>The British Biology Olympiad (BBO) is an annual online competition for senior high school students, run by UK Biology Competitions under the Royal Society of Biology. Top performers are considered for the UK's International Biology Olympiad team, and all participants receive Royal Society of Biology BioNet membership.</p><ul><li>Two 45-minute multiple-choice papers, sat online at the student's school under supervision</li><li>Eligibility: UK Year 12/13 (S5/S6 in Scotland) or equivalent year groups internationally (typically age 16–18)</li><li>Topics: animal anatomy, cell biology, genetics, plant anatomy, ecology, biosystematics, and related areas</li><li>All participants receive e-certificates; award thresholds (gold/silver/bronze/highly commended) apply globally</li><li>Free for UK schools; non-UK schools pay a flat £30 per school for unlimited student entries</li></ul><p>Schools register their students through the UK Biology Competitions website ahead of the competition window (usually in January).</p>