– Building contractors
– Building insulation and weather-proofing contractors
– Building maintenance services
– Electrical installation contractors
– Gas, water, plumbing, heating, ventilation and air conditioning (HVAC) plant installation and maintenance contractors
– Pipework and tubing installation contractors
– Plastering contractors

– Civil and marine engineering contractors

– Earth-moving, excavation, foundation and tunnelling contractors

– Metal constructions for the building industry

– Masts and pylons, metal

– Structural metal fabrications for bridges, roads and tunnels

– Structural metal fabrications for building work

Education, Training & Organizations

– Education and training

– General education schools

– International organisations, administrations and associations

– Public administration

Energy, Environment

– Energy, fuel and water

– Pipeline administration

IT, Internet, R&D

– 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

– Services for the film and video industry

– Sports and leisure equipment

– Souvenirs, non-promotional giftware and novelties

Metals, Machinery & Engineering

– Basic metal products

– Raw pig-iron

– Raw steel

Paper, Printing, Publishing

– Printing and publishing

– Publishing: Newspapers and magazines

Retail & Trader

– General traders, department and retail stores

– Retail trade

– Scrap and waste (trade)

– Wholesale trade

Transport & Logistics

– Means of transport

– Motor vehicle maintenance and repair services

– Transportation and logistics services

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