The NATSPEC National BIM Guide works with a number of supporting documents that can be compiled in a coordinated way and read in conjunction with each other to define how BIM is to be implemented on a project.

They are:

NATSPEC National BIM Guide: The Guide’s core document is a reference document that defines roles and responsibilities, collaboration procedures, approved software, modelling requirements, digital deliverables and documentation standards. It documents a range of possible uses for BIM on projects. To download a copy, see the button below. 

Quelle: www.bim.natspec.org