- GM Associates
 - Welwyn - Specialise in facilities management and associated efficiency savings. - Grass Roots Group plc
- Tring - Specialises in management services, incentives and awards, performance measurement, and employee development. Travel & Event Management.
- Henderson Partnership, The
- Welwyn Garden City - Offering stocktaking services for retail, wholesale, industrial, and licensed trades.
- QUALTRAK Ltd.
- Watford - Offers call centre performance management, coaching, training, customer service and independent call evaluation services.
- TriCoStar Limited
- Hoddesdon - Provides software and services in e-service/CRM and Intranet/Web content management systems.
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