The National Survey of Sexual Attitudes and Lifestyles (NATSAL) is the name given to a series of face-to-face surveys of people in the United Kingdom regarding their sexual behaviour and patterns. The three rounds of interviews completed to date are NATSAL I (1990–91) and NATSAL II (2000-01) and NATSAL III (2010–12). The results are widely used in research and policy making. NATSAL's principal investigator is Anne Johnson, a professor at University College, London.
The 2010 survey revealed, among other things, that British people are having sex less often than they did 20 years ago.
Johnson, Anne M; Mercer, Catherine H; Erens, Bob; Copas, Andrew J; McManus, Sally; Wellings, Kaye; Fenton, Kevin A; Korovessis, Christos; Macdowall, Wendy. "Sexual behaviour in Britain: partnerships, practices, and HIV risk behaviours". The Lancet. 358 (9296): 1835–1842. doi:10.1016/s0140-6736(01)06883-0. Mercer, Catherine H; Tanton, Clare; Prah, Philip; Erens, Bob; Sonnenberg, Pam; Clifton, Soazig; Macdowall, Wendy; Lewis, Ruth; Field, Nigel. "Changes in sexual attitudes and lifestyles in Britain through the life course and over time: findings from the National Surveys of Sexual Attitudes and Lifestyles (Natsal)". The Lancet. 382 (9907): 1781–1794. doi:10.1016/s0140-6736(13)62035-8. Wellings, Kaye; Nanchahal, Kiran; Macdowall, Wendy; McManus, Sally; Erens, Bob; Mercer, Catherine H; Johnson, Anne M; Copas, Andrew J; Korovessis, Christos; Fenton, Kevin A; Field, Julia (December 2001). "Sexual behaviour in Britain: early heterosexual experience". The Lancet. 358 (9296): 1843–1850. doi:10.1016/S0140-6736(01)06885-4. PMID 11741623. Fenton, Kevin A; Korovessis, Christos; Johnson, Anne M; McCadden, Angela; McManus, Sally; Wellings, Kaye; Mercer, Catherine H; Carder, Caroline; Copas, Andrew J; Nanchahal, Kiran; Macdowall, Wendy; Ridgway, Geoff; Field, Julia; Erens, Bob (December 2001). "Sexual behaviour in Britain: reported sexually transmitted infections and prevalent genital Chlamydia trachomatis infection". The Lancet. 358 (9296): 1851–1854. doi:10.1016/S0140-6736(01)06886-6. National Survey of Sexual Attitudes and Lifestyles Wikipedia (Text) CC BY-SA