How the fertility gap is fuelling the rise of one-child families
By BBC, December 5, 2025Natalie Johnston was scrolling on Facebook a couple of years ago, when she came across a group called “One And Done On The Fence”. Seeing it, she felt a sense of relief.
“It was nice to hear someone giving it a name,” she says.
She and her husband have a five-year-old daughter called Joanie, but they knew they probably wouldn’t have a second child, not because they couldn’t, but not out of choice, either: Natalie finds it hard to imagine having the time and money for one.
“You know you’d love that baby, everyone tells you, but there’s a little teeny niggle where you think, ‘what if I put my first in that position where she can’t do the activity she wants to do because I’ve got to spread money out between two’?”
She adds: “Is it okay to say you’re only having one because they don’t fit into modern ways of parenting?”
Modern parenting, for Natalie, 35, looks like family holidays with Joanie. It looks like weekday evenings are spent hearing about her day at school and helping her with homework. But, with demanding jobs and no family living nearby to help with childcare, it also looks like an expensive childcare jigsaw.
But ultimately, deciding whether or not to have a second is a tough decision. “I think you worry you’d regret it,” she says.
The fertility rate was 1.41 children per woman in England and Wales in 2024, according to the Office for National Statistics (ONS) – the lowest on record for a third year running.
Separately, the proportion of families with one dependent child has grown since the turn of the century – that includes families with one child, as well as those who also have children over 18 or may have left home.
They made up 44 per cent of all families in England and Wales with dependent children living with them, up from 42 per cent in 2000. (Though the peak was 47 per cent in the early 2010s, which then dipped before picking up again after Covid.)
Bridging the fertility gap
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”.
Education Secretary Bridget Phillipson said earlier this year that she wants “more young people to have children, if they so choose”.
She pointed to the expansion of funded childcare hours in England as a way the government was trying to recover “dashed dreams”.
Annual nursery costs for a child under two in England did fall this year for the first time in 15 years, according to the children’s charity Coram.