The Marriage Foundation reports that half of today's babies will see their mum and dad split by the time they reach the age of 15.
The figures reveal the extent of marital breakdown in the UK – and the organisation has called on government ministers to do more to help married couples and protect families.
The charity think tank – founded by High Court judge Sir Paul Coleridge - found that a whopping 354,000 of the 729,674 children born in England and Wales in 2012 will have separated parents by the time they reach their mid-teens.
The pro-marriage group says that married couples are much more likely to stay together than those who are unmarried, and that their study found that the vast majority of children with still-together parents when they are 15, will have a married mum and dad.