comparing Poland to UK is pointless as poverty doesn't mean the same in both countries.
I get what you're saying, but by using that analogy, the entire UNICEF report is pointless then. The point of the report is to determine the levels of child poverty within each country, in comparison to others.
All the participating children from the different countries involved in the studies were asked the same questions.
Based on their answers, and data from other sources, this is how the rankings for each country were attained.
The US for example, was often at the bottom of the tables/graphs,well below Poland, despite it being one of the richest countries in the world. The problem is that there is huge economic disparity within the country.
The UK has a safety net in the form of of it's benefit system, but that doesn't mean that money received by unemployed parents is necessarily being spent wisely or on the children. Or maybe there is only one employed adult on minimum wage within a family. There is poverty in the UK, which might not be as outwardly obvious as in Poland ,and not to the same degree, and this is reflected in the fact that the UK lies above Poland in the rankings of material well being.
I am also sure that the UNICEF reports don't tell the whole story either.
wrong approach by the government that either ignore it or thinks that throwing some money on them will solve it.
Throwing money at the problem is treating the symptoms of poverty and not the cause.
There is much that could be done, but one has to ask how much of a priority trying to eradicate child poverty is.