Investment Banking UK A-Level Insight Programs - Few Extracurriculars on CV

I am looking into applying for 2017 A-Level insight events in London (e.g. the Nomura First Step program), however I have no non economics (the subject I am applying to study at university) extracurriculars to include on my CV, and none of these economics extracurriculars are ongoing (e.g. they are all essay competitions I have entered and the like).

Will this harm my application?
For context I have solid academics (11 A* and 1 A at GCSE, AA with a ~95% UMS average in the AS subjects I took this year, predictions of AAA*A for A2), however I am worried that as I have little outside of academics my application will be disadvantaged, as I will not be seen as a well rounded individual.