- Auditel UK
 - Offers cost management consultancy for communications and utilities expenses. - British Independent Utilities
- BIU is an energy and utility management consultancy providing procurement, energy management, utility planning, monitoring, and targeting services. Helps clients reduce their energy costs.
- Haswell Consulting Engineers
- Provides engineering consultancy services to construction and water utility industries.
- Smith Bellerby
- Cost management consultants offering cost reduction services, including audits, for utilities and fixed or mobile telecommunications.
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