This research report presents the findings of a longitudinal study into the impact of Sure Start local programmes (SSLPs) on 7-year-olds and their families. In assessing the impact of SSLPs on child and family functioning over time, the evaluation followed up over 5,000 7-year-olds and their families in 150 SSLP areas who were initially studied when the children were 9 months and 3- and 5-years-old