Sayantika

Hi, I'm an art teacher, teaching art to few students online and my home. My monthly income is around £800 - £1000. So I registered as a sole trader and got my UTR. Now I can see that I don't need to register as a company, or do I need to? Should I just wait till 5th of April 2025 for HMRC to let me know how much tax I have to pay after I submit my self-assessment? Also, I wanted to provide some certifications to my students and for that I was discussing with Trinity college of London. They have a pre-requisite that I should have a registered business. So I guess I have to register my business anyway, am I correct? What are the implications of doing it? Thanks.