Self Assessment for Savings income

Hi, I need some help as unsure what I need to do. Over the last few years I have always paid my taxes via PAYE, I have now stopped working and last years income was just £20 from my employer, I dont get a pension yet. With rising interest rates my savings have last year (23/24) generated more savings interes than my personal allowance in, will my banks and NS& I inform HMRC of this or do I need to do this? Will HMRC notify me if I need to file a self-assessment or do I need to set something up myself? I am completely confused but don't want to get fined. Grateful for any advice, thanks.

Any advice please ?

Hi Taxdummy,
We will be notified of your Savings Interest by the Banks or NSI, but if your total Savings Interest is more than £10,000 then you will need to complete a Self-Assessment (SA) Tax Return - see the following Link -  Check if you need to send a Self Assessment tax return.
Thank you.