Self Assessment employment status

Hi, I was employed until recently but was made redundant and now self employed. I already submit the annual Self Assessment as I have other incomes. How can I notify HMRC of the change in status from employed to self employed in the Self Assessment system please? I don't need to register for Self Assessment as I already have one and submit every year. Thank you

Hi,

You can see guidance here:

Set up as a sole trader

Thank you.