Interpretation
The interpretation provisions provide that:
the expressions “work” and “at work” in Part I of the 1974 Act are to be taken to have the meanings they have on the principal appointed day (1 July 1999). This is consistent with paragraph 5(1) of Part III of Schedule 5 which provides that references to the subject matter of an enactment are to be read as references to the subject matter of that enactment as it has effect on the principal appointed day. However the subject-matter of Part I of the 1974 Act is not fixed because it includes a power for the Secretary of State to extend the definition of “work” for the purposes of health and safety regulations. This interpretation provision ensures that this power cannot be used to extend the scope of the reservation beyond that which it had on the principal appointed day; and
the subject matter of Part I of the 1974 Act includes certain specified aspects of fire safety but not any other aspects of fire safety. Those specified aspects are those which are, in practice, regulated under health and safety legislation.