- Eastern Orthodox Church, New Britain
- Economic Development, New Britain
- Education, New Britain
- Education & Information Services, New Britain
- Educational Consultants, New Britain
- Electric Companies, New Britain
- Electrical Control Systems & Materials, New Britain
- Electrical Supplies, Parts & Equipment, New Britain - Wholesale & Manufacturers
- Electricians, New Britain - Electrical Contractors
- Electronics Manufacturers, New Britain
- Electronics Stores, New Britain
- Elementary Schools, New Britain
- Emergency Services, New Britain
- Employment & Recruiting Consultants, New Britain - Executive Search Consultants
- Employment Agencies, New Britain - Staffing Agencies
- Employment Agencies General Labor, New Britain
- Employment And Labor Relations Attorneys & Lawyers, New Britain
- Employment Screening, New Britain - Background Check
- Employment Services, New Britain
- Energy Conservation Consultants, New Britain
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- Energy Equipment Systems & Supplies, New Britain
- Energy Services, New Britain
- Engineer & Architect Services, New Britain - Engineering & Architecture Service
- Engravers & Typesetting Printers, New Britain
- ENT, New Britain - Ears Nose & Throat Doctors, Physicians & Surgeons
- Entertainment & Recreation, New Britain
- Entertainment Consultants, New Britain
- Environmental Attorneys & Lawyers, New Britain
- Environmental Attorneys & Lawyers, New Britain
- Environmental Lawyers & Attorneys, New Britain
- Episcopal Churches, New Britain
- Essential Oils, New Britain
- Estate And Property Attorneys & Lawyers, New Britain
- Estate And Property Attorneys & Lawyers, New Britain
- Estate And Property Lawyers & Attorneys, New Britain
- Ethnic Churches, New Britain
- European Cuisine, New Britain
- Excavation Contractors, New Britain - Excavating - Excavator Companies
- Eye Banks, New Britain
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