4 Gas, gaseous fuels, oil, liquefied natural gas.
7 Machines and machine tools; motors and engines, compressors; pipe installation apparatus, oil and gas drilling apparatus, pumps.
11 Apparatus for lighting, heating, steam generating, cooking; domestic apparatus, cookers, fires, wall heaters, convector heaters, water heaters, fan heaters, gas boilers, gas central heating systems, microwave ovens, hearths; showers; apparatus for heat and power generation.
12 Vehicles; apparatus for locomotion by land, air or water; private, commercial and mass transportation vehicles, all fueled by natural gas; engines for aforesaid vehicles.
36 Insurance services, loan and credit facilities, insurance for maintenance and repair of appliances, heating systems, central heating systems, compressors and other related appliances, direct debiting and discount services; leasing of fixed and moveable property; financial services, including hire-purchase.
37 Installation, repair, emergency servicing and maintenance of gas appliances, pipework, apparatus and instruments utilising gas; laying, repair, maintenance, replacement and refurbishment of pipelines; repair of roads and paths; construction, repair and maintenance of gas installations, services relating to the installation, repair and maintenance of energy-using appliances and instruments and to the construction, repair and maintenance of energy-using installations; installation of insulating materials, drilling of wells, exploitation and extraction of oil and gas, oil and gas drilling, oil pumping and extraction; underwater construction; demolition; building construction services; construction, maintenance and renovation of property; obtaining hydrocarbons such as natural gas and crude petroleum from below ground such as from oil fields; installation, repair and maintenance of gas compressors.
40 Generation of power; generation of electricity; processing and refining of gas and oil.
42 Services relating to the auditing of energy consumption and of the efficiency of operation of appliance and the safety checking of appliances and pipework; scientific, engineering and environmental research and development services; geophysical and geological surveys services; exploration of gas and oil; underwater exploration; land development; surveying; computer services, maintenance and updating of computer software design of computer software and programming; testing gas appliances, pipework, apparatus and instruments using gas; inspection of pipelines; measuring gas consumption.