How a 'fertility gap' is fuelling the rise in one-child families

The UK's falling birth rate is part of what the United Nations calls a "global fertility slump", which it puts down, in part, to money worries. People aren't "turning their backs on parenthood", says the UN in a summary of its Population Fund's State of World Population report, which surveyed people across 14 countries. Instead it says they "are being denied the freedom to start families due to skyrocketing living costs, persistent gender inequality and deepening uncertainty about the future".

The BBC's education correspondent Hazel Shearing has been investigating the factors behind the fall, and the knock-on effects for society.

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