A place is "enclosed" if—
(a) it is covered; and
(b) it is 75% or more enclosed.
Note 1 Under this definition, any part of a place that is not under cover is not enclosed . However, the Act requires an occupier of premises to take reasonable steps to prevent smoke from the premises entering an enclosed public place—see s 8A (Offence by occupier—permitting smoke into enclosed public place from another part of premises) and s 9 (Offence by neighbouring occupier).
Note 2 Place includes part of a place (see dict, def place ).