UK: The most common type of family in the UK is married couple families, in the UK 36% of British households are nuclear families. Now families are not all made up of married parents living with their children as lots of families consist of stepfamilies, cohabiting parents, single parents, couples living apart and civil partnerships. As of 2022, it is estimated that 8.34 million people will live alone in the Uk which is an increase of around 36,000 when compared to 2021.