The Smoke Control Areas (Exempted Fireplaces) (Wales) Order 2005
Section 20 of the Clean Air Act 1993 (“the Act”) places a general prohibition on the emission of smoke in smoke control areas. The National Assembly for Wales may, by order made under section 21 of the Act, exempt specified classes of fireplace from the provisions of section 20, if it is satisfied that they can be used for burning fuel other than authorised fuels without producing any smoke or a substantial quantity of smoke.