The 7 Up documentary series airs its final chapter, decades after it began

The long-running documentary series 7 Up has aired what its broadcaster describes as its final chapter, more than six decades after it began following a group of British children through their lives at seven-year intervals.

The series started in 1964 as a single 40-minute ITV documentary focused on a group of seven-year-olds from different social backgrounds. What was initially conceived as a standalone programme evolved into a decades-long project that returned to the same individuals every seven years, tracking them through adolescence, adulthood, parenthood and, in this latest instalment, into their seventies.

A study of class and time

The series was originally designed to explore how social class in Britain shapes life outcomes, an inquiry that unfolded across the participants' shifting circumstances over the decades. Over time, the project came to be recognised for revealing broader truths about ageing, memory and the changing nature of British society, beyond its original focus on class.

Viewers who have followed the series across its various instalments have effectively watched the same individuals grow older in real time, an unusual and intimate form of documentary storytelling that has few direct equivalents in television history.

With the participants now in their seventies, the broadcaster's description of this instalment as the final chapter marks the likely conclusion of a project that has spanned most of the participants' lives, offering a rare, extended record of ordinary lives shaped by extraordinary longevity of documentation.

The series has been widely discussed by critics and audiences for what it reveals not only about social mobility in Britain, but about the passage of time itself.