The real solution to getting children out of poverty is getting the parents out of poverty.
Anybody with a calculator can figure out that a single parent on the average wage, (or a couple earning a bit above the minimum wage) are going to struggle due to the property prices taking around half of their wages before getting onto council taxes, and things like food, light, heat, clothing etc. Heck, how many people are just priced out of having children altogether?
One of the reasons we have a recession is that people are spending most of their money on basic necessities and frankly have no disposable income to spend on luxury items. Easy solution? Build more houses.
Lots more houses. Dust off the plans for prefabs, suspend or amend planning rules that NIMBY's use to maintain their house prices at crisis levels for a couple of years, build on the green belt (yeah, more people in the UK means more houses. Deal with it) and let's aim for putting up around a quarter million a year. If it could be managed after WW2 with large parts of the population dead or maimed, with the industry bombed flat then we have no reasonable excuse for not managing it now when vastly less manpower is required since most of it can be automated via CNC machines etc.
Large numbers of houses built means that housing costs come down, which means more disposable income, which means more spending on things other than housing, which means more jobs in other sectors. It's good news for everybody except housing developers, or the rich with "buy to let" portfolios which would then devalue somewhat.