http://www.legislation.gov.uk/uksi/1972/438/signature/made
The Smoke Control Areas (Exempted Fireplaces) Order 1972
Westlaw
King's Printer of Acts of Parliament
2011-04-05
CLEAN AIR
Section 11 of the Clean Air Act 1956 empowers local authorities to declare the whole or any part of their district to be a smoke control area in which the emission of smoke is, generally, prohibited.
The Smoke Control Areas (Exempted Fireplaces) Order 1972
sch.
The Smoke Control Areas (Exempted Fireplaces) (Variation) Order 1974
The Smoke Control Areas (Exempted Fireplaces) Order 1972
Order
The Smoke Control Areas (Exempted Fireplaces) (England) Order 2015
Sch. 2
Pt. 2
art. 1(c)
Peter WalkerSecretary of State for the Environment