In this Schedule—

• “relevant chimney” means—

  1. a

     a chimney of a building to which a smoke control order in England applies, or

  2. b

     a chimney which serves the furnace of any fixed boiler or industrial plant to which a smoke control order in England applies;

• “person liable”, in relation to a relevant chimney, means—

  1. a

     if the chimney is the chimney of a building, the occupier of the building, or

  2. b

     if the chimney serves the furnace of any fixed boiler or industrial plant, the person having possession of the boiler or plant.