6 Approval of documents for purposes of building regulations
(1)For the purpose of providing practical guidance with respect to the requirements of any provision of building regulations, the Secretary of State or a body designated by him for the purposes of this section may—
(a)approve and issue any document (whether or not prepared by him or by the body concerned), or
(b)approve any document issued or proposed to be issued otherwise than by him or by the body concerned, if in the opinion of the Secretary of State or, as the case may be, the body concerned the document is suitable for that purpose.