One of 7 NHS Special Boards, National Services Scotland NHS (NSS) is a Non Departmental Public Body, accountable to Scottish Government, which provides national strategic support and advice services to the rest of NHS Scotland. This support is delivered through a number of 6 Strategic Business Units (SBUs) covering Blood, Tissues and Cells; IT; Procurement, Commissioning and Facilities; Public Health and Intelligence; Practitioner and Counter Fraud Services and Central Legal Office.