- Center for Global Energy Studies
 - Westminster - Analyzes energy issues, including the economics and politics of energy, oil, and gas. - EnTech Energy Consultants
- Islington - Energy management service bureau specialising in assisting organisations with many premises with energy efficiency improvements and savings.
- Fuel Cell Today
- Camden - A global Internet portal offering information on worldwide events, careers, investment, knowledge bank, and reference centre.
- Genesis Oil & Gas Consultants Ltd.
- Camden - Offshore and onshore front end engineering consultancy specialising in facilities and production system performance, asset optimisation, and risk assessment.
- NCL Solar Ltd
- Lewisham - Supplies solar-powered lanterns, lamps, lights, and ponds.
- Seminel
- Islington - Provides business and IT consultancy to companies in the energy industry, focusing on energy trading and risk management.
- Target Energy Services
- Wandsworth - Energy management and cost saving consultancy for commerce, industry, and education.
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