Ryan Roberts, George Davidson, Thomas Diakun, who are all 17, and 18-year-old Jun Yan Chan sat the one-hour first paper in college.
Ryan earned a merit and Jun a bronze medal and both were invited to sit a second exam in the competition.
All students had to answer a series of questions that tested how they could apply their knowledge to real life challenges.
Topics covered included mechanics and nuclear energy and the idea was to see how they could apply what they had learnt to new situations.
The group – who are aiming to go on to study degrees in chemical engineering, maths and natural sciences – said the experience would help them when applying for university.
Tutor Deborah Pressage added: “The Olympiad is a great experience for our students because it tests them on issues outside of the curriculum.
“Many use it in their university applications as it is an example of how they are able to think outside the box, which is something universities really value.”
The British Physics Olympiad aims to encourage the study of physics and recognise excellence in young physicists through four competitions. It also gives the participants practice in answering open-ended and unstructured questions, as seen at higher levels of study.