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1970 British Cohort Study (1970BCS)

About the cohort

Start date: 1970
Age at recruitment: 0
Sample size at recruitment: 17,287
Estimated current sample size: 8,874

The 1970 British Cohort Study (BCS70) follows the lives of more than 17,000 people born in England, Scotland and Wales in a single week of 1970. Over the course of cohort members lives, the BCS70 has collected information on health, physical, educational and social development, and economic circumstances among other factors.

Since the birth survey in 1970, there have been eight ‘sweeps’ of all cohort members at ages 5, 10, 16, 26, 30, 34, 38 and 42. A new sweep of the cohort is planned at age 46.

BCS70 is part of CLOSER (Cohort & Longitudinal Studies Enhancement Resources) which aims to maximise the use, value and impact of the UK’s longitudinal studies.

Core funders

  • Economic and Social Research Council



Principal Investigator: Professor Alice Sullivan


Centre for Longitudinal Studies
Institute of Education
20 Bedford Way

Data available through the UK Data Service 


Tel: +44 (0)20 7612 6875

Page last updated: 25 Feb 2015

Cohort start year: 1970

Page last updated: 25 Feb 2015


  • Gender: Male, Female
  • Sample size: 5,000-9,999
  • Age: 0 to 9, 10 to 19, 20 to 39, 40 to 59
  • Anthropometric: Height, Weight, Blood pressure
  • Physical: Cardiovascular, Respiratory, Musculoskeletal, Hearing and vision, Reproductive
  • Psychological: Mental health, Cognitive function
  • Lifestyle: Smoking, Physical activity, Dietary habits, Alcohol
  • Socio-economic: Occupation, Finances, Family circumstances, Housing, Education, Ethnic group, Marital status, Social support