Designation of uses of factory, office, shop and railway premises4.
Subject to article 7 below, the following uses of premises are hereby designated for the purposes of section 1 of the 1971 Act (which requires fire certificates for premises put to designated uses), that is to say–
(a)
use as factory premises;
(b)
use as office premises;
(c)
use as shop premises; and
(d)
use as railway premises,
being (in each case) a use of premises in which persons are employed to work.