In the Building Safety Act 2022, the Golden Thread is the information that allows you to understand a building, as well as and the steps needed to keep both the building and people safe. Essentially, it involves getting the right building safety information, to the right people, at the right time.
It starts from when a building is designed and before it is constructed. This information should be updated throughout these stages, ready for handover to the Accountable Person once the building is occupied.