I made a huge mistake. My application is submitted and biometrics are done. Application is on it's way to UKVI. I answered "No" when I should have answered "Yes". In 2015, I was refused a residence permit to study in Denmark because the school I applied to wasn't approved by a government authority. I didn't know that it wasn't a government affiliated or approved school, and applied anyway. There was nothing wrong with my application though.
While filling out my UK Tier 4 application, I completely forgot about this. It was an honest mistake. What should I do? Should I contact UKVI? I have already got admission in a HEI in London and attached my CAS and everything with the documents. P.S - I'm from India.