Hi HMRC admin, I have a full-time job as a junior doctor, and I do my self-assessment every year. However, I have recently started doing some extra shifts as a locum for a private hospital. They paid me fully, and they told me that I needed to sort out my taxes. Can I be self employed for this private work and do I have put this self-employment income through self-assessment or I need to file separate tax for the self-employed income? or I should setup a limited company for the private work ? I'm a bit confused about what to do...thank you