The Smoke Control Areas (Exempted Fireplaces) Order 1993
Section 18 of the Clean Air Act 1993 empowers local authorities to declare the whole or any part of their district to be a smoke control area. Section 20 of the Act generally prohibits the emission of smoke in smoke control areas. By order made under section 21 of the Act specified classes of fireplace may be exempted from the provisions of section 20.