The report finds that 3.8m people in England and Wales identify as Catholic, while 6.2m say they were raised Catholic.
This means Catholics have the strongest retention rate of any Christian denomination in England and Wales – 55.8 per cent of cradle Catholics still identify as Catholic. But the Church also has the lowest rate of conversions: only 7.7 per cent.
The figures come in the first report issued by the Catholic Research Forum, a new initiative of the Benedict XVI Centre at St Mary’s University. The forum aims to provide “academically rigorous and pastorally useful” research.