CLS is responsible for running three of Britain’s internationally-renowned birth cohort studies:

  • 1958 National Child Development Study (NCDS)
  • 1970 British Cohort Study (BCS70)
  • Millennium Cohort Study (MCS).

These studies follow the same group of people throughout their lives, charting social change and untangling the reasons behind it. CLS manages the extensive process of surveying all cohort members through a combination of face-to-face and telephone interviews, and paper and online questionnaires. The most recent surveys for the 1970 and millennium cohorts are being carried out in 2012. The members of the 1958 cohort will be surveyed next in 2013.

The UK Data Service works closely with CLS to ensure timely delivery of these major cohort series to users.