Installation, integration, repair, maintenance, upgrading and optimisation of computers, computer hardware, electrical and electronic equipment, energy generation and storage equipment, monitoring equipment, heating, cooling and ventilation systems, metering equipment and power systems; installation, integration, repair, maintenance, upgrading and optimisation of electric battery systems for the storage, discharge, supply, transmission and stabilisation of electricity; installation, integration, repair, maintenance and upgrading services in the field of industrial technology; maintenance of household technology systems, devices and apparatus; computer and telephone battery recharge services; vehicle battery charging; leasing services relating to electric battery systems for the storage, discharge, supply, transmission and stabilisation of electricity; operating, maintaining and regulating electric battery systems for storage, discharge, supply, transmission and stabilisation of electricity; leasing of electric battery chargers; leasing of smart battery chargers; rental of electric battery chargers; rental of smart battery chargers; electric vehicle battery charging services; charging of electric vehicles; installation, repair and maintenance of charging stations for electric vehicles; installation, repair and maintenance of home charging stations for electric vehicles; installation, repair and maintenance of ground-, air-, and water-source heat pumps; installation, repair and maintenance of solar panels; installation, repair and maintenance of domestic heating equipment; installation, repair and maintenance of batteries in the home; installation, repair and maintenance of insulation in the home; installation, maintenance and repair of windows and conservatories; installation, maintenance and repair of air flow and air conditioning apparatus; construction, maintenance, servicing and repair of gas, hydrogen and electricity generating plants; installation, maintenance, repair and servicing of gas, hydrogen and electric appliances, pipe works and transmission lines; installation, maintenance, repair and servicing of apparatus and instruments using gas, hydrogen or electricity; construction, installation, maintenance and repair of electrical charging stations and electrical charging points; installation, maintenance, repair and servicing of central heating systems; construction of geothermal power installations; construction of geothermal heating installations; construction of geothermal community heating installations; insulation services; building insulation; installation of building insulation; insulation of roofing; pipeline insulation; installation of boilers; repair or maintenance of boilers; installation, maintenance and repair of boiler systems and solar energy systems; double glazing installation; plumbing; plumbing and glazing services; electrical contractor services; electric appliance installation and repair; electrical wiring services; emergency servicing of apparatus for supplying electricity; fuelling of hydrogen gas for vehicles; refuelling of hydrogen vehicles; installation, maintenance, servicing and repair of energy-using appliances, apparatus and instruments; installation, maintenance, servicing and repair of heating, cooling, refrigerating, air conditioning and lighting apparatus and installations; installation, maintenance, servicing and repair of energy generating apparatus; laying, inspection, maintenance, repair, refurbishment and replacement of pipelines, fuel distribution networks, and energy systems; installation, maintenance, servicing and repair of gas appliances, apparatus and instruments; installation, maintenance and repair of gas powered and gas fuelled appliances; installation, maintenance and repair of office machinery and equipment; vehicle breakdown repair services; vehicles breakdown assistance; servicing of vehicles and their parts and fittings; installation of vehicle parts and fittings; inspection, repair, maintenance, cleaning, valeting and painting of vehicles; vehicle window and windscreen replacement and maintenance services; assembling of storage systems; installation, maintenance and repair of computer hardware; computer installation services; computer maintenance services; computer repair services; consultancy services relating to installation of computers; consultancy services relating to installation of telecommunication apparatus; installation and repair of telecommunication apparatus; installation of communications network apparatus; installation of communications network instruments; installation of data network apparatus; installation of electrical apparatus; installation of electronic apparatus; maintenance and repair of communications apparatus; maintenance and repair of communications systems; maintenance and repair of data processing apparatus; maintenance and repair of data communications networks; maintenance and repair of electrical apparatus; maintenance and repair of electronic apparatus; maintenance and repair of electronic installations; maintenance and repair of telecommunications apparatus; maintenance of data-processing terminals; wiring of buildings for telecommunication transmission; wiring of offices for data transmission; electrical apparatus repair; electrical apparatus installation; electrical installation services; installation of pipe systems for conducting of gases; installation of pipe work systems; energy generating apparatus; cleaning of electrical motors; installation of audio electrical apparatus; interference suppression in electrical apparatus; maintenance of electrical apparatus; maintenance and repair services in respect of electrical control apparatus; maintenance of commercial electrical systems; renovation of electrical wiring; repair services for domestic electrical appliances; advice relating to preventing blockages in plumbing lines; advisory services relating to the installation of plumbing; advisory services relating to the maintenance of plumbing; advisory services relating to the repair of plumbing; beneath ground construction work relating to plumbing; cleaning of water supply plumbing; maintenance of plumbing; renovation of plumbing; rental of plumbing apparatus; construction of ventilation shafts; advisory services relating to the installation of environmental control systems; advisory services relating to the installation of solid fuel heating systems; assembling of storage systems, information services relating to installation of security systems; installation of access control systems; installation of closed circuit television systems; installation of fire detection systems; installation of lighting systems; installation of cable television systems; installation of cellular communications systems; installation of cellular paging systems; installation of central vacuum cleaning systems; installation of computer systems employing solid-state electronic circuitry; installation of computerised information systems; installation of environmental engineering systems; installation of flood warning systems; installation of instrumentation systems; installation of pipe systems for conducting of liquids; installation of pipe systems for conducting of steam; installation of pneumatic bulk material handling systems; installation of radio frequency communications systems; installation of security systems; installation of solar powered systems; installation of traffic management systems; installation warden call systems; advisory services relating to the maintenance of environmental control systems; advisory services relating to the repair of environmental control systems; information services relating to installation of security systems; information services relating to maintenance of security systems; installation of kitchen appliances; installation of kitchen equipment; kitchen equipment installation; hire of building tools; hire of tools; maintenance and repair of metal-working tools; maintenance of pneumatic hand tools; diagnosis maintenance services for computers; rental of building tools; rental of machine tools; rental of tools; repair of tools; services for the hire of tools; servicing of machine tools; construction of complexes for business; conversion of business premises; installation of temporary structures for business exhibitions; repair services for electronic business equipment; information, consultancy and advisory services relating to the aforesaid services.

Energy supply and distribution; supply, transmission, storage and distribution of electricity, gas, hydrogen and water; distribution of renewable energy; supply and distribution of electricity from wind and solar power; supply of hydroelectricity; supply of district or community heating; distribution of energy for heating and cooling buildings; providing information on tariffs for the supply and distribution of energy; leasing services relating to electric battery systems for the storage, supply and transmission of electricity; leasing of vehicles; leasing of electric vehicles; rental of hydrogen cars; supply of hydrogen to homes; supplying hydrogen for vehicles; route planning services; rental of electric vehicles; rental of vehicles; information, consultancy and advisory services relating to all of the aforesaid services.

Research, design and development services; design consultancy services; design of cars; engineering services; scientific research in the field of electricity; surveying and exploration services; technology consultancy services; technical monitoring services; monitoring of electric battery systems for storing and supplying electricity; optimising electric battery systems for storage, discharge, supply, transmission and stabilisation of electricity; measurement services; product testing services; electric car performance testing; design and development of computer software; computer software design services; technology audit services; quality audit services; technical project management services; technical project planning services; advisory services relating to energy consumption and energy efficiency; advisory services relating to the environment and environmental impact; energy usage monitoring services, namely recording and monitoring data relating to energy consumption; research in the reduction of carbon emissions; research in the field of carbon offsetting; provision of information, advice and consultancy in relation to carbon offsetting; advisory services relating to energy efficiency; advisory services relating to the use of energy; consultancy in the field of energy-saving; advisory and consultancy services relating to reducing carbon emissions; technical research, consultancy and advisory services relating to zero carbon or carbon neutral energy; network planning services; installation, repair and maintenance of computer software; technical support services; computer and network diagnostics services; technical integration of computer systems and networks; computer software integration services; leasing services relating to electric battery systems for the discharge and stabilisation of electricity; mechanical and electrical engineering; information, consultancy and advisory services relating to the aforesaid services.