These are appliances which have been exempted by Statutory Instrument (Order) under the Clean Air Act 1993 . They have passed tests to confirm that they are capable of burning wood fuel without emitting smoke.
60 Range Cooker
Amphora Firewood Bag with Wooden Handles
Architecture Wood Burning Front Glass Fireboxes
Circle Outdoor Fire
Cookout Outdoor Cooking System
Edinburgh Fireplace suitable for Wood
Katan Outdoor Fire