Article 18 Scope of Exemption

Article 19 has effect in the case of any person who supplies to any premises, each of which comprises a single building or structure, gas consisting wholly or mainly of propane or butane which is conveyed thereto by him through pipes from transportable storage containers; and such a person, such premises and such gas are referred to in articles 19 and 20 as an authorised person, as relevant premises and as relevant gas.