4. At the end of paragraph (2) of regulation 11, insert the following paragraph—E+W+S
“(2A) Where the Health and Safety Commission approves a revision referred to in paragraph (2), during the period between the publication by the Commission of a notice specifying that revision and the date on which that revision takes effect a person may comply with the requirements of these Regulations as if any reference to the approved document were a reference to—
(a)the approved document prior to that revision; or
(b)the approved document as revised.”.