The National Survey of Sexual Attitudes and Lifestyles
The British National Surveys of Sexual Attitudes and lifestyles are among the largest and most detailed scientific studies of sexual behaviour in the world. Three Natsal surveys have taken place: Natsal-1 in 1990-1991, Natsal-2 in 1999-2001, and Natsal-3 in 2010-2012.
New findings from the survey are now available to read on the Lancet's website.
You can also download a set of infographics (updated June 2014) that illustrate what we've found out.
Here's a taster of our latest results.