Burners for boilers;Burners for the combustion of gas in boiler units;Burners for the combustion of oil in boiler units;Burners, boilers and heaters;Central heating boilers;Domestic boilers;Flues for heating boilers;Gas boilers;Gas boilers [other than parts of machines];Gas boilers for central heating;Gas boilers for water heating;Gas fired boilers;Gas fired boilers for producing domestic hot water;Heating boilers;Hot water boilers;Industrial boilers;Oil fired boilers;Boiler pipes [tubes] for heating installations;Boilers;Boilers being parts of central heating installations;Boilers for central heating installations;Boilers for heating installations;Boilers for hot water supply installations;Boilers for use in heating systems;Boilers, other than parts of machines;Pipes for heating boilers;Water boilers;Water heaters and boilers;Sanitary and bathroom installations and plumbing fixtures;Accelerated ageing furnaces;Accelerated ion devices [for treating the air];Accent lights for indoor use;Accumulation boilers;Accumulators (Heat -);Accumulators (Steam -);Acetylene burners;Acetylene flares;Acetylene generators;Adjustable coated baffle grease filters [parts of cooker hoods];Aeolian ventilators;Aeration apparatus;Aerators for faucets [plumbing fittings];Afterburners being parts of furnaces;Agricultural irrigation units;Air balancing dampers;Air bars for use in dryers;Air circulation apparatus;Air cleaning apparatus;Air cleaning apparatus for household purposes;Air cleaning filters [parts of air cleaning machines or installations];Air cleaning instruments;Air cleansing apparatus;Air conditioners;Air conditioners for automobiles;Air conditioners for household purposes;Air conditioners for vehicles;Air conditioning;Air conditioning apparatus;Air conditioning apparatus for commercial use;Air conditioning apparatus for industrial purposes;Air conditioning apparatus for industrial use;Air conditioning apparatus for ships;Air conditioning devices;Air conditioning fans;Air conditioning filters;Air conditioning for data processing rooms;Air conditioning for use in transportation;Air conditioning installations;Air conditioning installations for agricultural use;Air conditioning installations for cars;Air conditioning installations for commercial use;Air conditioning installations for household purposes;Air conditioning installations for industrial purposes;Air conditioning installations for vehicles;Air conditioning panels for use in walk-in coolers;Air control dampers;Air cooling apparatus;Air curtains;Air curtains for ventilation;Air dehumidifiers;Air deodorising apparatus;Air deodorizing apparatus;Air distribution units;Air driers;Air driers [dryers];Air dryers;Air drying apparatus;Air extractor hoods (Filters for -);Air extractor hoods for use with cookers;Air filter installations;Air filtering installations;Air filters;Air filters for air conditioning units;Air filters for household use;Air filters for industrial installations;Air filters for industrial use;Air filters for use as dust arrestants in industrial processes;Air filters for use as dust extractors in industrial processes;Air filtration installations;Air freezing apparatus;Air freezing installations;Air freshener dispensing systems;Air freshener plug-ins;Air freshening apparatus;Air fryers;Air handlers;Air handling installations;Air heat recovery apparatus;Air heat recovery installations;Air heaters;Air heating apparatus;Air heating furnaces;Air heating installations;Air humidifiers;Air humidifiers [water containers for central heating radiators];Air humidifying apparatus;Air humidifying installations;Air impellers for ventilation;Air inductor apparatus [air conditioning];Air inductor apparatus [ventilation];Air inlets [vents] for vehicles;Air ionization apparatus;Air moisturisers;Air or water (Ionization apparatus for the treatment of -);Air purgers for use with water distribution installations;Air purgers for use with water supply installations;Air purification apparatus;Air purification installations;Air purification machines.

Installation of boilers;Boiler repair services;Repair or maintenance of boilers;Installation of boilers;Maintenance and repair of solid fuel boilers;Boiler cleaning and repair;Boiler repair services;Providing information relating to the repair or maintenance of boilers;Repair or maintenance of boilers;Servicing of industrial boilers;Plumbing;Plumbing and gas and water installation;Plumbing installation, maintenance and repair;Plumbing services;Installation of plumbing;Installation of plumbing systems;Maintenance of plumbing;Installation of pipework systems;Lagging of pipework;Abrasive cleaning of metallic surfaces;Abrasive cleaning of non-metallic surfaces;Abrasive cleaning of surfaces;Acoustic ceiling cleaning;Advice relating to preventing blockages in grease traps;Advice relating to preventing blockages in plumbing lines;Advice relating to preventing blockages in septic tanks;Advisory services relating to asphalting;Advisory services relating to building construction;Advisory services relating to building demolition;Advisory services relating to building refurbishment;Advisory services relating to excavating;Advisory services relating to pipe laying;Advisory services relating to surfacing projects;Advisory services relating to the alteration of buildings;Advisory services relating to the care of gauge blocks;Advisory services relating to the care of slip gauges;Advisory services relating to the construction of buildings;Advisory services relating to the construction of public works;Advisory services relating to the installation of audiovisual equipment;Advisory services relating to the installation of building automation equipment;Advisory services relating to the installation of communication equipment;Advisory services relating to the installation of engines;Advisory services relating to the installation of fire prevention equipment;Advisory services relating to the installation of fixings;Advisory services relating to the installation of gearboxes;Advisory services relating to the installation of generators;Advisory services relating to the installation of heating and cooling apparatus;Advisory services relating to the installation of hydraulic equipment;Advisory services relating to the installation of lighting apparatus;Advisory services relating to the installation of motors;Advisory services relating to the installation of passenger lifts;Advisory services relating to the installation of plumbing;Advisory services relating to the installation of power plants;Advisory services relating to the installation of pumps;Advisory services relating to the installation of security and safety equipment;Advisory services relating to the installation of solid fuel heating systems;Advisory services relating to the installation of telephone equipment;Advisory services relating to the maintenance and repair of mechanical and electrical equipment;Advisory services relating to the maintenance of buildings;Advisory services relating to the maintenance of environmental control systems;Advisory services relating to the maintenance of fixings;Advisory services relating to the maintenance of gauge blocks;Advisory services relating to the maintenance of plumbing;Advisory services relating to the maintenance of slip gauges;Advisory services relating to the reinstatement of trenches;Advisory services relating to the renovation of property;Advisory services relating to the repair of buildings;Advisory services relating to the repair of civil engineering structures;Advisory services relating to the repair of environmental control systems;Advisory services relating to the repair of motor vehicles;Advisory services relating to the repair of plumbing;Advisory services relating to vehicle maintenance;Advisory services relating to vehicle repair;Aeroplane maintenance;Aeroplane maintenance and repair;Aeroplane repair;Air compressors (Rental of -);Air conditioning apparatus cleaning services;Air conditioning apparatus installation and repair;Air conditioning contractor services;Air conditioning vent sealing services;Air duct cleaning services;Air-conditioning system installation and repair;Aircraft maintenance;Aircraft maintenance and repair;Aircraft maintenance and repair services;Aircraft maintenance or repair;Aircraft repair;Aircraft repair and maintenance;Aircraft repair or maintenance;Airplane de-icing services;Airplane maintenance and repair;Alarm, lock and safe installation, maintenance and repair;Alarms (Installation of -);Alarms (Repair of -);Antenna installation and repair;Anti-corrosion treatment;Anti-rust treatment;Anti-rust treatment for motor vehicles;Anti-rust treatment for vehicles;Anti-rust treatment of motor vehicles;Apartment refurbishment services;Application of anti-graffiti coatings;Application of bridge expansion joints;Application of coatings for the repair of surfaces of buildings;Application of coatings for the repair of walls;Application of coatings to buildings;Application of coatings to swimming pools;Application of coatings to tunnels;Application of protective coatings for buildings;Application of protective coatings to building surfaces;Application of protective coatings to cavity surfaces;Application of protective coatings to tank surfaces;Application of protective paint to buildings;Application of protective paint to wood;Application of rendering to buildings;Application of rendering to swimming pools;Application of rendering to tunnels;Application of screeds;Abrasive cleaning of metallic surfaces;Abrasive cleaning of non-metallic surfaces;Abrasive cleaning of surfaces;Acoustic ceiling cleaning;Advice relating to preventing blockages in grease traps;Advice relating to preventing blockages in plumbing lines;Advice relating to preventing blockages in septic tanks;Advisory services relating to asphalting;Advisory services relating to building construction;Advisory services relating to building demolition;Advisory services relating to building refurbishment;Advisory services relating to excavating;Advisory services relating to pipe laying;Advisory services relating to surfacing projects;Advisory services relating to the alteration of buildings;Advisory services relating to the care of gauge blocks;Advisory services relating to the care of slip gauges;Advisory services relating to the construction of buildings;Advisory services relating to the construction of public works;Advisory services relating to the installation of audiovisual equipment;Advisory services relating to the installation of building automation equipment;Advisory services relating to the installation of communication equipment;Advisory services relating to the installation of engines;Advisory services relating to the installation of fire prevention equipment;Advisory services relating to the installation of fixings;Advisory services relating to the installation of gearboxes;Advisory services relating to the installation of generators;Advisory services relating to the installation of heating and cooling apparatus;Advisory services relating to the installation of hydraulic equipment;Advisory services relating to the installation of lighting apparatus;Advisory services relating to the installation of motors;Advisory services relating to the installation of passenger lifts;Advisory services relating to the installation of plumbing;Advisory services relating to the installation of power plants;Advisory services relating to the installation of pumps;Advisory services relating to the installation of security and safety equipment;Advisory services relating to the installation of solid fuel heating systems;Advisory services relating to the installation of telephone equipment;Advisory services relating to the maintenance and repair of mechanical and electrical equipment;Advisory services relating to the maintenance of buildings;Advisory services relating to the maintenance of environmental control systems;Advisory services relating to the maintenance of fixings;Advisory services relating to the maintenance of gauge blocks;Advisory services relating to the maintenance of plumbing;Advisory services relating to the maintenance of slip gauges;Advisory services relating to the reinstatement of trenches;Advisory services relating to the renovation of property;Advisory services relating to the repair of buildings;Advisory services relating to the repair of civil engineering structures;Advisory services relating to the repair of environmental control systems;Advisory services relating to the repair of motor vehicles;Advisory services relating to the repair of plumbing;Advisory services relating to vehicle maintenance;Advisory services relating to vehicle repair;Aeroplane maintenance;Aeroplane maintenance and repair;Aeroplane repair;Air compressors (Rental of -);Air conditioning apparatus cleaning services;Air conditioning apparatus installation and repair;Air conditioning contractor services;Air conditioning vent sealing services;Air duct cleaning services;Air-conditioning system installation and repair;Aircraft maintenance;Aircraft maintenance and repair;Aircraft maintenance and repair services;Aircraft maintenance or repair;Aircraft repair;Aircraft repair and maintenance;Aircraft repair or maintenance;Airplane de-icing services;Airplane maintenance and repair;Alarm, lock and safe installation, maintenance and repair;Alarms (Installation of -);Alarms (Repair of -);Antenna installation and repair;Anti-corrosion treatment;Anti-rust treatment;Anti-rust treatment for motor vehicles;Anti-rust treatment for vehicles;Anti-rust treatment of motor vehicles;Apartment refurbishment services;Application of anti-graffiti coatings;Application of bridge expansion joints;Application of coatings for the repair of surfaces of buildings;Application of coatings for the repair of walls;Application of coatings to buildings;Application of coatings to swimming pools;Application of coatings to tunnels;Application of protective coatings for buildings;Application of protective coatings to building surfaces;Application of protective coatings to cavity surfaces;Application of protective coatings to tank surfaces;Application of protective paint to buildings;Application of protective paint to wood;Application of rendering to buildings;Application of rendering to swimming pools;Application of rendering to tunnels;Application of screeds.