Do you know if

If on UC

I don’t understand the question. Are you asking if your dad paying the nursery bill will affect your uc?

What's the question?

If the money goes direct from your dad to nursery, then you have no issue surrounding potential undeclared income.

@Lauryn yes x

You can claim childcare cost from UC so makes no sense for your dad to pay it

It won’t make a difference. You can submit the proof of cost and payment and they will give you pay 85% of it.