BPhO is run by the British Physics Olympiad charity from the Department of Physics at Oxford, and its Round 1 paper has run since the 1980s as the backbone of UK selection for the IPhO.
Entries grew sharply in recent years — nearly 3,800 scripts arrived in November 2024 — so the organisers added Round 0 as a pre-selection: one hour, 25 multiple-choice questions, no calculator, ramping from mid A-level difficulty up to competition level, designed to let more students try while capping Round 1 at 1,500–2,000 papers.
Students invited from Round 0 sit Round 1 in November: two hours, with short-answer Section 1 and a choice of two of four long questions in Section 2. It rewards modeling and derivation rather than A-level recall — the organisers state plainly that an expected A* does not predict a top result, and team-level students typically score 70–80%.
Top Gold and selected Gold students are invited to the three-hour Round 2 in late January, which is limited to students eligible for the UK team. Marking is done by an experienced team at Oxford, with Round 1 results emailed to teachers by late December. For international-school students, BPhO offers a track parallel to F=ma/USAPhO that stays open to non-U.S. citizens well into its advanced papers.







