As a self-employed cleaner you are responsible for paying your own taxes, this is super easy to do.
You'll need to register as self-employed with HMRC which you can do online here.
Being self-employed means you'll need to keep on top of your earnings and make sure you're aware of how much tax you'll need to pay, this is easy to do and there's online calculators you can use to give yourself an idea how much tax you'd need to pay.
The tax year runs from April 6th - April 5th and you need to file your tax returns by the 31st of December.
We're always available to help with any and all questions about being self-employed.