Stopping Self Employmed Status

Hello I want to inform the HMRC that I have stopped being self employed as sole trader. I understand that I need to fill out a form from this link https://www.gov.uk/stop-being-self-employed and also inform them on my final self assessment submission after April 6th 2024. My question is would I be able to put in a date on the form that predates todays date. For example if I wanted to end my self employment status on 1st December 2023 and todays date is 4th Feb 2024 would I be able to say my self employment ended on 1st December 2023? If I added the date of 1st December 2023 as my end date of self employment would I be officially classed as not self employed after that date. Thank you in advance

Hi RaggedRobin,
Yes, you will show the date that the self employment ceased as this will also affect any Class 2  National Insurance payable. 
Thank you.