– Building contractors
– Building industry contractors
– Building insulation and weather-proofing contractors
– Concrete works contractors
– Plastering contractors

– Civil and marine engineering contractors

– Earth-moving, excavation, foundation and tunnelling contractors

– Heating, ventilation, air conditioning (HVAC) and refrigeration equipment

– Boilers

– Metal pipework, valves and containers

– Tanks and vats, metal

– Timber, wooden products, machinery and equipment for the woodworking industry

– Packagings, wooden, storage and transportation

Education, Training & Organizations

– International organisations, administrations and associations

– Public administration

– Trade associations

– Trade unions, professional

Electrical, Electronics & Optical

– Electronic equipment. Telecommunications equipment

– Installation and maintenance services for the electronics industry

– Optical, photographic and cinematographic equipment

– Installation and maintenance services for the optical industry

Energy, Environment

– Energy, fuel and water

– Water supply services

– Environmental services, renewable energies

– Technical environmental contractors and services NES

– Waste collection and recycling services NES

IT, Internet, R&D

– Information technology (IT) and Internet

– Information technology (IT) auditing and consulting services

– Information technology (IT) security services

– Information technology support and maintenance services (help desks)

Leisure & Tourism

– Hospitality, tourism, hotel and catering industries

– Holiday camps and tourist complexes

– Sports and leisure equipment

– Painting and drawing equipment and requisites

Metals, Machinery & Engineering

– Industrial subcontractors

– Boilerwork services

– Mechanical construction services

– Precious metal surface treatment and machining contractors

– Machinery and equipment for metalworking

– Installation and maintenance services, for metalworking machines and equipment

Paper, Printing, Publishing

– Printing and publishing

– Publishing houses

– Printing equipment. Office and shop equipment

– Office machinery and equipment NES

– Pencils and pencil parts

Retail & Trader

– General traders, department and retail stores

– Retail trade
– Retail trade, building and construction materials
– Scrap and waste (trade)
– Vending machine operators
– Wholesale trade

Transport & Logistics

– Handling and storage plant and equipment

– Pallets

– Transportation and logistics services

– Road haulage, bulk
– Road haulage, part loads
– Road transport services classified by type of freight