Do I need to apply for self assessment as a sole trader as a Director with no income/dividends?

Hello, I am anxious as I know we are approaching the self assessment deadline date. Please can somebody from HMRC confirm whether I have to set up as a sole trader. I do not make any income through self employment as a stay at home dad. I am a director of a business set up in the financial tax year 2022-2023 which has generated no income and I have not received any dividends or any money that is taxable. Do I have to set up? And I imagine if I do there will be a period where I have to wait to receive my unique tax reference so there may be a delay with getting this information so how can I get in contact with HMRC to explain this and avoid any penalties? Thank you so much. Mark

Hi MarkCharters15,
Please refer to:
Self Assessment tax returns
If a return is required you should have notified us by 5 October to avoid any penalties being charged.
Thank you.