Hi Kazim116,
Basic rate taxpayers like yourself have a personal savings allowance of £1000, so any interest recieved over this amount it will be liable to tax.
Your bank or building society will tell HMRC how much interest you received at the end of the year.
HMRC will tell you if you need to pay tax and how to pay it.
Please see link for further information on this:
Tax on savings interest
Thank you.