Pensions, savings and tax

Ah that's great! My pension providers or administrators, Benpal mercer are useless (see Trust pilot reviews gah!) and in the midst of being taken over. I can't log in & they just send invalid links. I've messaged them umpteen times but they just keep on sending invalid links. Ive now given up & hope the new company is less incompetent & actually fit for purpose.

My private pension providers send me notification of changes to my tax code.

Thank you both! That's very helpful and makes sense. I found a portal today on government gateway to go through to check if I need to fill out a self-assessment tax return and it appears not, so good news! Thanks again.

I'm in a similar place to you, DollyRocker and tax is deducted on a PAYE basis by the two pension funds paying out my private pensions.
Interest on non-ISA savings is declared to HMRC by the banks/building societies and, if you're a standard rate tax payer, your tax code will be adjusted so that you pay tax on any interest over £1000pa. In other words, more money will be deducted each month from your pension payments but all the interest you've accrued remains untouched. If you're a higher rate tax payer, the tax-free allowance on savings interest is only £500pa - they get us all ways!
HTH

Your workplace pension will most likely be taxed at source but I don't know about your other income.