– Architectural concrete, decorative concrete contractors
– Building contractors
– Building insulation and weather-proofing contractors
– Concrete works contractors
– Gas, water, plumbing, heating, ventilation and air conditioning (HVAC) plant installation and maintenance contractors
– Plastering contractors
– Roofing and wall cladding contractors

– Civil and marine engineering contractors

– Civil engineering contractors NES
– Earth-moving, excavation, foundation and tunnelling contractors
– Oil and gas drilling and exploration contractors
– Spring, well, irrigation and water supply contractors
– Transport infrastructure engineering 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

– Crèches and nursery schools

– Training courses, computing systems, information technology (IT), internet and multimedia

– Medical care, social services

– Assistance services for the elderly and the disabled

Energy, Environment

– Energy, fuel and water

– Coal

– Environmental services, renewable energies

– Sewage system maintenance

IT, Internet, R&D

– Information technology (IT) and Internet

– Information technology (IT) auditing and consulting services

– Information technology (IT) engineering

– Information technology (IT) maintenance services

– Technical offices and engineering consultancies, architects

– Building industry information consultants

– Electronic and telecommunications engineering consultants

– Transport equipment engineering consultants NES

Leisure & Tourism

– Leisure, culture and entertainment

– Animal parks and zoos

– Leisure and sports centres

– National parks, nature reserves, zoos and botanical gardens

– Party, entertainment and festival organisers. Events NES

– Postal services, telecommunications, radio and television

– Land-based telecommunication operators

– Radio and television operators

– Services operated by communications satellites

– Telecommunications services

Metals, Machinery & Engineering

– Industrial subcontractors

– Metal machining contractors

– Polishing services for metals

– Surface coating, non metallic, for metal surfaces

Paper, Printing, Publishing

– Paper and board

– Base and backing paper

– Coated and laminated paper and board

– Hygiene paper

– Wrapping paper and paper packaging materials

– Printing equipment. Office and shop equipment

– Vending machines

Retail & Trader

– General traders, department and retail stores

– Retail trade

– Wholesale trade

Transport & Logistics

– Handling and storage plant and equipment

– Conveyors for bulk

– Feeders

– Means of transport

– Caravans, towable

– Motor vehicle maintenance and repair services

– Motor vehicle washing equipment and services

– Transportation and logistics services

– Air transport services, passenger and freight
– Motor vehicle hire and rental services
– Road haulage, bulk
– Road haulage, part loads
– Road transport services classified by type of freight
– Warehouses and storage sites