The golden thread is the Building Safety Act’s requirement for an accurate, up-to-date and accessible record of building information, maintained digitally across the life of a higher-risk building: what was designed, what was built, and the evidence connecting them.
It exists because investigations found that critical safety information was routinely lost, fragmented or wrong. The thread links design intent, construction evidence and completion certification so that decisions about the building can always be traced.
Practically it demands disciplined information management: controlled documents, recorded changes, competence trails and evidence captured as work proceeds rather than reconstructed at gateway submissions.