OP Not interested in the politics, just your money!
Unless you earn a fabulous sum per hour, you should have been taken out of tax altogether, or nearly so, on April 1st. That was the headline claim, wasn't it?
You should be at the top end of childcare tax credits.
You shouldn't have had your working tax credit cut unless you were overpaid last year (HMRC being crap).
You should still be on child tax credit. Didn't that go up slightly for the low paid?
Basically, people like you and me (working single mothers) should be better off. My tax credits have risen but I'm trying to work out which bit is which, and whether it has genuinely gone up or whether I've simply paid off an 'overpayment' [i.e. HMRC mistake].
However I am paying so much more for food, other groceries, clothes, utilities and insurance that I am starting to worry.