According to some definitions, they would be classified as an LAT couple.

Some LAT couples may even de-prioritize couple relationships and place more importance on friendship.

From this perspective LAT couples can pursue both the intimacy of being in a couple and at the same time preserve autonomy.

LAT couples are also found in all socio-economic groups, and in Britain show little difference to the class profile of the population as a whole.

Research using more comprehensive data suggests LAT couples are a heterogeneous social category with varying motivations for living apart.

Research suggests similar or even higher rates in southern Europe, although here LAT couples often remain in parental households.

LAT couples account for around 10% of adults in Britain, a figure which equates to over a quarter of all those not married or cohabiting.

Overall, LAT couples may be 'gladly apart; 'regretfully apart' or, for many, undecided and ambivalent where they experience both advantages and disadvantages.

Caring for others is a common reason for not living with a partner One reason why LAT couples do not share a residence is because they are responsible for the care of other persons.6 For example, one or both members of the couple may have children.

Professor Roseneil added: 'We would like to see LAT couples have the right to "opt in" to legal recognition - for protection in case of separation or bereavement - and to be taken into account by those providing personal, health and social care services, such as relationship counselling and family support.'