– Building contractors
– Building industry contractors
– Concrete works contractors
– Gas, water, plumbing, heating, ventilation and air conditioning (HVAC) plant installation and maintenance contractors
– Pipework and tubing installation contractors

Education, Training & Organizations

– Education and training

– Crèches and nursery schools

– General education schools

– International organisations, administrations and associations

– Public administration

– Medical care, social services

– Charitable organisations

Energy, Environment

– Energy, fuel and water

– Electricity distribution

– Electricity production

– Gas distribution

– Gas production

Leisure & Tourism

– Hospitality, tourism, hotel and catering industries

– Holiday camps and tourist complexes

– Hotels and motels

– Leisure, culture and entertainment

– Leisure and sports centres

Metals, Machinery & Engineering

– Industrial subcontractors

– Maintenance and repair services for industrial equipment

– Machinery and equipment for metalworking

– Installation and maintenance services, for metalworking machines and equipment

Paper, Printing, Publishing

– Printing and publishing

– Printing specialities

Retail & Trader

– General traders, department and retail stores

– Retail trade

– Wholesale trade

Transport & Logistics

– Transportation and logistics services

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