Installation of safes; Alarm, lock and safe installation, maintenance and repair; Services for the installation of alarms; Installation of computer systems; Installation of burglar alarms; Electric appliance installation and repair; Installation of computer networks; Repair of alarms; Burglar alarm repair; Fire alarm installation; Fire alarm repair; Repair or maintenance of fire alarms; Maintenance and servicing of security alarms; Installation, maintenance and repair of burglar alarms; Providing information relating to the repair or maintenance of fire alarms; Installation of hardware for computer systems; Maintenance and repair of computer networks; Installation, maintenance and repair of computer network and information technology equipment; Installation and maintenance of hardware for computer networks and Internet access; Electrical installation services; Installation of electric light and power systems; Installation of theft prevention devices; Installation of security and safety equipment; Advisory services relating to the installation of security and safety equipment; Installation of lighting systems; Installation of security systems; Information services relating to maintenance of security systems; Information services relating to installation of security systems; Installation of fittings for buildings; Installation of fixtures and fittings for buildings; Installing of telecommunications networks; Installation and repair of telecommunications networks; Maintenance and repair of telecommuncations networks, apparatus, and instruments; Installation of wireless telecommunications equipment and wireless local area networks; Installation of transmission lines; Fire extinguisher recharging services; Installation of fire extinction systems; Installation of lighting apparatus; Repair of lighting apparatus; Providing information relating to the repair or maintenance of electric lighting apparatus; Renovation, repair and maintenance of electrical wiring; Installation of fire detection systems; Installation of fire evacuation systems; Installation of smoke extraction systems; Installation of heat exhaust systems; Maintenance and repair of fire evacuation systems; Installation of fire suppression systems; Maintenance and repair of fire extinction systems; Installation of door closers; Installation of door openers and closers; Installation of environmental control systems; Advisory services relating to the maintenance of environmental control systems; Advisory services relating to the repair of environmental control systems; Installation of environmental protection systems; Installation of communications network instruments; Installation of data network apparatus; Maintenance of data communication networks; Maintenance and repair of data communications networks; Installation, maintenance and repair of computer hardware; Installation of industrial fire protection; Installation of active fire protection; Installation of passive fire protection; Installation of physical access control; Maintenance and repair of access control systems; Maintenance and repair of physical access control; Installation of building automation equipment; Advisory services relating to the installation of building automation equipment; Installation of closed circuit television systems; Installation of residential security apparatus; Installation of door openers; Installation of hardware and cables for Internet access; Installation of hardware for Internet access; Installation of cables for Internet access; Installation, maintenance and repair of telecommunications equipment; Advisory services relating to the installation of fixings; Advisory services relating to the installation of audiovisual equipment; Advisory services relating to the installation of communication equipment; Advisory services relating to the installation of lighting apparatus; Consultancy relating to the installation, maintenance and repair of computer hardware; Preparation of a site for the installation of computer equipment; Advisory services relating to the installation of fire prevention equipment; Burglar alarm installation and repair; Fire alarm installation and repair.;