Just two years away from turning 30, participants in Michael Apted's documentary series are facing serious questions of identity and purpose, wondering whether they've found their place in the world.
| Actor | Role |
|---|---|
| LLynn JohnsonSelf | Self |
 Tony WalkerSelf | Self |
 Jacqueline BassettSelf | Self |
 Bruce BaldenSelf | Self |
 Andrew BrackfieldSelf | Self |
 Paul KligermanSelf | Self |
 Symon BasterfieldSelf | Self |
 Neil HughesSelf | Self |
 Peter DaviesSelf | Self |
 Suzanne DeweySelf | Self |
 Susan SullivanSelf | Self |
 John BrisbySelf (archive footage) | Self (archive footage) |
 Nicholas HitchonSelf | Self |
 Michael AptedInterviewer/Narrator (voice) | Interviewer/Narrator (voice) |