i think the big problem is that places like Sweden and Denmark offer quality low-cost childcare and you don't lose all your benefits if you go out to work.
Here, there's no such wraparound care.
And if you're single, earning say, £14K-£16K, how are you supposed to manage?
Oh, tax credits, yes, but they don't pay the full cost of the childcare.
And you literally cannot afford to pay even 30% of it on that sort of wage, which believe you me is VERY common for even semi-skilled and skilled professions.
The other issue is the enormous cost of housing/council tax and the fact that a person who earns so little still has be pay tax and NI.
The tax threshold is WAY too low.