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, 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; information, advisory and consultancy services relating to all the aforesaid 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; 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 of data-processing terminals; wiring of buildings for telecommunication transmission; electrical apparatus repair; electrical apparatus installation; electrical installation services; electrical wiring services; installation of pipe systems for conducting of gases; installation of pipework systems; electrical wiring services; installation of 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; mechanical and electrical engineering; 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; plumbing; plumbing and glazing services; 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; installation of fire detection systems; installation of lighting 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 solar powered systems; advisory services relating to the installation of environmental control systems; advisory services relating to the installation of solid; fuel heating systems; advisory services relating to the maintenance of environmental control systems; advisory services relating to the repair of environmental control systems; hire of building tools; hire of tools; maintenance and repair of metal-working tools; maintenance of pneumatic hand tools; remote diagnosis services for ascertaining the cause of malfunctions in computer-numerically controlled machine tools; 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; none of the foregoing services being liquefied petroleum gas, operated by liquefied petroleum gas or utilising liquefied petroleum gas.

Research, engineering, design and development services all relating to the gas, oil, fuel and energy industries; exploration of fuel resources scientific, engineering and environmental research and development; testing and analysis of fuels, by-products and waste materials; professional consultancy and advisory services relating to the gas, oil, fuel and energy industries; inspection of buildings, installations, plant and machinery; testing and safety checking of appliances, pipework, apparatus and instruments using gas, oil, fuel or energy; safety checking of appliances and distribution networks; custom design of containers and procedures for transporting, storing, and disposing of gas, oil, and fuel; incident investigations; safety audits; third party safety audits; provision of completion certificates and service records; design of computers and computer software; computer programming; computer systems analysis; custom design of containers and procedures (methods) for transporting, storing, and disposing of gas, oil, and fuel; incident investigations relating to gas installations; gas, oil, fuel and energy safety consultancy services; inspecting, testing, approving, certificating and defining standards and codes of conduct for installers, maintainers and repairers of gas appliances and installations; inspection, testing, certificating and approving persons and organisations as installers, maintainers and repairers of gas appliances and installations; professional and consultancy technical services; rental of computer time; advisory services relating to computer based information systems; advisory services relating to computer hardware; consultancy in the field of computer hardware; design of computer hardware; computer network services; computer program maintenance services; consultancy services relating to computer networks; consultancy services relating to information technology; consultation services relating to computer hardware; consultation services relating to computer systems; design of telecommunications installations; engineering consultancy relating to design; information services relating to computers; information services relating to the application of computer networks; installation of firmware; leasing of computer equipment; leasing of computer hardware; professional consultancy relating to computers professional consultancy relating to technology; technical project management; provision of engineers' services; provision of expert appraisals relating to communications; provision of expert appraisals relating to computing; provision of expert appraisals relating to electrical equipment; provision of expert appraisals relating to electronic equipment; provision of expert evaluations relating to computing; provision of expert evaluations relating to electrical equipment; provision of expert evaluations relating to electronic equipment; provision of expert reports relating to electrical equipment; provision of expert reports relating to electronic equipment; research relating to computers; services for the provision of technological information; services for the testing of computer installations; information, advice and consultancy services relating to all the aforesaid services; designing of electrical systems; electrical engineering services; electrical research; information services relating to the electrical properties of semi-conductor materials; provision of expert appraisals, evaluations and reports relating to electrical equipment; advisory services relating to energy efficiency; professional consultancy relating to energy efficiency in buildings; advisory services relating to computer based information systems; advisory services relating to computer systems analysis; advisory services relating to computer systems design; advisory services relating to obtaining quality systems approvals from organisations; computer system integration services; consultancy services for analysing information systems; consultancy services for designing information systems; consultancy services for planning information systems; consultancy services relating to computer systems; consultation services relating to computer systems; design services for data processing systems; design services for display systems for exhibition; design services for display systems for presentation purposes; design services for display systems for promotional purposes; design services relating to computer systems; design services relating to process systems for the biotechnology industry; design services relating to the development of computerised information processing systems; engineering services relating to metal forming systems; engineering services relating to metal handling systems; engineering services relating to the design of communications systems; engineering services relating to the design of electronic systems; information services relating to the application of computer systems; information services relating to the development of computer systems; services for the design of computer systems; design services for clothing; design of tools; design services relating to data processing test tools; design services relating to data processing tools; design services relating to data transmission test tools; design services relating to metal-working tools; technological studies relating to machine tools; design of marketing material; design of printed matter for use in marketing; creating and maintaining web sites; creating and maintaining web sites for others; hosting computer sites; hosting the computer sites (web sites) of others; rental of web servers; web site design; design of business management networks; advisory services relating to the safety of engineering products; advisory services relating to the safety of products; advisory services relating to the safety of the environment; consumer products (safety-testing of- ); safety technological testing services; safety testing of products; technical advice relating to safety; testing of safety products; advisory services relating to obtaining quality systems approvals from organisations; auditing of the quality control capability of manufacturers; consultancy relating to quality control; consultancy services relating to quality control; inspection of goods for quality control; quality assurance consultancy; quality audits; quality control; quality control of building materials; quality control of completed buildings; quality control of manufactured goods; quality control of partly manufactured goods; quality control of raw materials; quality control relating to computer software; quality control relating to computer systems; quality control testing; quality testing; professional advisory services relating to computer hardware; professional advisory services relating to computer software; professional advisory services relating to computers; professional consultancy relating to architecture; professional consultancy relating to computer software; professional consultancy relating to computers; professional consultancy relating to data processing; professional consultancy relating to energy efficiency in buildings; professional consultancy relating to fitted kitchen design; professional consultancy relating to industrial design; professional consultancy relating to manufacturing efficiency; professional consultancy relating to technology; professional consultancy relating to technology exploitation; professional consultancy relating to the conservation of energy; professional consultancy relating to the design of interior accommodation; inspection of pipelines; advice relating to energy, the use of energy, energy safety, and gas safety accreditation and certification services; inspecting, testing, approving, certifying and defining standards and codes of conduct for installers, maintainers, repairers and users of gas, oil, fuel and energy appliances and installations; inspecting, testing, approving and certifying persons as installers, maintainers, repairers and users of gas, oil, fuel and energy appliances and installations; gas, oil, fuel and energy safety consultancy services; incident investigations; plant and machinery incident investigations; safety audits; third party safety audits; certifying as to the energy efficiency of buildings; project studies relating to health and safety services for assessing the safety of consumer products; services for assessing the safety of industrial chemicals; none of the foregoing services being liquefied petroleum gas, operated by liquefied petroleum gas or utilising liquefied petroleum gas.