MMQ3872

Hello, I have a question about the 2021/2022 tax year. I suspect that I have omitted information to HMRC. Please help me find out. I used BNO Visa to arrive in the UK on 18 April 2021. In the first tax year of 2021/2022 (April 18, 2021 - April 5, 2022), I personally did not have any income. A friend reminded me that I still have to file a Self Assessment tax return even though I have no income. Should I file a tax return? If necessary, how should I remedy it? Thank you!