biology olympiad for medicine ps

i did the british biology olympiad earlier this year (our school made everyone doing bio participate randomly?? so no one was prepared) and i got a bronze, is this worth mentioning in my medicine personal statement (will be applying to oxford + ucl)? i'm not really sure if this is an achievement or not because i've never even heard of the BBO before, but i came across a personal statement for oxbridge where someone said they got a 'highly commended' in it, so maybe it should be mentioned? i know it will be mentioned in my ucas reference by my teachers so should i include it in my ps too? thanks for your help!