– Building contractors
– Building insulation and weather-proofing contractors
– Flooring, paving and tiling contractors
– Gas, water, plumbing, heating, ventilation and air conditioning (HVAC) plant installation and maintenance contractors
– Glazing contractors
– Plastering contractors

– Civil and marine engineering contractors

– Earth-moving, excavation, foundation and tunnelling contractors

– Civil engineering and building machinery and equipment

– Construction painters' and decorators' tools

– Metal constructions for the building industry

– Masts and pylons, metal

– Structural metal fabrications for bridges, roads and tunnels

– Structural metal fabrications for building work

– Metal pipework, valves and containers

– Packings, metal
– Pipe, tube and hose fittings, metal
– Pipe, tube and hose joints, metal
– Pipes and tubes, non-ferrous metals
– Pipes, tubes, ducts and pipelines, ferrous metals
– Seals and gaskets, metal
– Valves, cocks, taps and fittings, by metal type
– Valves, cocks, taps and fittings, metal, by use

Education, Training & Organizations

– Education and training

– Technical and professional schools, colleges and institutes

– Training courses NES

– International organisations, administrations and associations

– Public administration

– Medical care, social services

– Cemeteries, crematoria and funeral directors

Electrical, Electronics & Optical

– Electrical equipment. Nuclear equipment

– Electrical industry contractors

Energy, Environment

– Energy, fuel and water

– Water supply services

IT, Internet, R&D

– Information technology (IT) and Internet

– Electronic data processing (EDP) services
– Information technology (IT) auditing and consulting services
– Information technology (IT) maintenance services
– Information technology (IT) security services
– Information technology support and maintenance services (help desks)

– Research and testing

– Earth resources survey services by satellite

– Technical offices and engineering consultancies, architects

– Geological, geotechnical, geochemical engineering consultants

Leisure & Tourism

– Leisure, culture and entertainment

– Libraries

– Museums, art galleries

– Postal services, telecommunications, radio and television

– Radio and television operators

Metals, Machinery & Engineering

– Basic metal products

– Light metals and alloys

– Non-ferrous metals and alloys NES

– Industrial subcontractors

– Mechanical assembly contractors
– Metal engraving services
– Metal pipework services
– Metal surface painting services
– Metallising services for metallic surfaces
– Surface coating, non metallic, for metal surfaces

Minerals

– Glass, cement and ceramics

– Mineral insulating materials

– Rock wool products

Paper, Printing, Publishing

– Printing and publishing

– Flatbed printing: letterpress and offset-photolithography

– Publishing: Newspapers and magazines

– Printing equipment. Office and shop equipment

– Office machinery and equipment NES

– Pencils and pencil parts

– Pens and pen parts

Retail & Trader

– General traders, department and retail stores

– Retail trade
– Retail trade, computers and software
– Scrap and waste (trade)
– Vending machine operators
– Wholesale trade

Transport & Logistics

– Means of transport

– Motor vehicle maintenance and repair services

– Transportation and logistics services

– Motor vehicle hire and rental services
– Port and harbour administration
– Salvage companies and ocean towing services
– Warehouse services, specialised
– Warehouses and storage sites