1.3 This guidance is intended for Authorities who are developing their Outline Business Cases (OBC) for capital investment and who are currently undertaking or managing PPP/NPD procurements and projects. It will also be of benefit to Authorities up to financial close of PPP/NPD procurements. Advisers to the Authority and Contractors are also recommended to read this. It is recommended that Authorities refer to this guidance throughout the procurement, construction and operational periods.