Electrical installation services; Electrical engineering services (construction); Electrical wiring services; Maintenance, installation and repair of electrical items and equipment; Services of electricians; Installation of data network apparatus; Installation of data processing apparatus; Maintenance and repair of data processing apparatus; Maintenance and servicing of data processing installations; Maintenance of data processing apparatus; Maintenance services relating to computer hardware; Maintenance and repair of computer hardware; Maintenance and repair of computers; Maintenance of computers; Technical support services, namely, troubleshooting in the nature of computer hardware repair; Repair of computers; Installation and repair of computer hardware; Installation of computers; Installation of middleware (computer hardware); Installation, maintenance and repair of computer hardware; Installation, maintenance and repair of computer peripherals; Installation, maintenance and repair of middleware (computer hardware); Information technology consultancy relating to installation, maintenance and repair of computer hardware; Information technology (IT) services (computer and computer peripherals installation and maintenance); Computer support services (installation, repair and maintenance of computer hardware and peripherals); Computer support services (advisory and information services in relation to the repair, maintenance and installation of computer hardware and peripherals); Cable laying; Laying of cable; Laying of cables; Residential, commercial and industrial installation and repair of electrical and computer wiring and cabling; Maintenance and repair of data communications networks; Maintenance of data communication networks; Installation of cellular communications systems; Installation of communications network apparatus; Installation of communications network instruments; Installing of electronic communications networks; Maintenance and repair of communications systems; Installation and repair of telecommunication apparatus; Installation of telecommunications apparatus; Installing of telecommunications networks; Maintenance and repair of telecommunications apparatus