- Education, Belfast
- Education & Information Services, Belfast
- Educational Research, Belfast
- Educational, Philanthropic & Research Foundations, Belfast
- Electric Motors & Generators , Belfast
- Electrical Control Systems & Materials, Belfast
- Electricians, Belfast - Electrical Contractors
- Electrolysis Treatments, Belfast
- Electronics Stores, Belfast
- Elementary Schools, Belfast
- Embossing, Stamping & Engraving, Belfast
- Emergency Vehicle Accessories, Belfast
- Emergency Victim Services, Belfast
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- Employment Agencies, Belfast - Staffing Agencies
- Employment Staff Leasing, Belfast
- Energy Services, Belfast
- Engineer & Architect Services, Belfast - Engineering & Architecture Service
- Entertainers & Groups, Belfast
- Entertainment & Recreation, Belfast
- Environmental Conservation & Ecological Services, Belfast - Ecosystem Services
- Environmental Products, Belfast
- Environmental Products & Services, Belfast
- Environmental Services, Belfast
- Episcopal Churches, Belfast
- European Cuisine, Belfast
- Excavation Contractors, Belfast - Excavating - Excavator Companies
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