Couples are having less sex than in the previous two decades, new UK research says — but the number of people wanting more is rising.

A survey found that British people who are married or living with a partner are having sex less often, driving an overall decline in sex within UK society. People over the age of 25 are also having less sex, while more than half of British women and almost two-thirds of men admitted wanting more.

But the general declines did not apply as much to single people, and men under the age of 25 bucked the societal trend and did not report a dropoff in their sex lives. Only 43.4% of single men reported no sex in the previous month in 2012, compared with 50.3% in 1991.