Tax on pension?

I don’t think that’s quite right, nannarose.
It’s true that the State Pension is paid untaxed, but it is discounted against your personal allowance.
Eg, Personal tax free allowance = £11850
If your State Pension is £6000, you can then receive another £5850 from other sources (private or occupational pensions) before you start paying tax at the basic rate on the remainder of the private or occupational pension.

What misleads people is that your state pension does not have tax deducted from it - but it does count as taxable income - so when you get your code, the tax is deducted from another source of income (or you pay it separately).
Best sources of information: gov.uk (which sets it out clearly) and for advice, Money Saving Expert.

£11850 in fact

Welcome Masie
Yes pensions count as income and are taxable.
You have a basic tax free amount then everything over that is taxed on a sliding scale!
Sorry the news is a bit of a downer on this lovely sunny day!

Yes it does count as income, from this April you are allowed £11,500 per annum before you start paying tax. ?

I’m afraid if your pensions take you over your personal allowance, you will be taxed. Winter fuel allowance, if given, is tax free.
At the moment!