- Radio Stations & Broadcasting Companies, New Britain
- Radiologists, New Britain - Radiology Doctors, Physicians & Surgeons
- Real Estate, New Britain - Agent, Broker & Companies
- Real Estate Agent & Broker Services, New Britain
- Real Estate Agent - Property Lessors, New Britain
- Real Estate Appraiser, New Britain - Appraisal Services
- Real Estate Appraisers & Consulting Services, New Britain
- Real Estate Broker, New Britain
- Real Estate Consultants, New Britain
- Real Estate Developers, New Britain
- Real Estate Management, New Britain
- Real Estate Rentals, New Britain
- Real Estate Services, New Britain
- Record Storage, Destruction & Management, New Britain
- Recording Studio - Equipment & Rental, New Britain
- Records, Tapes, CDs - Used & Vintage, New Britain
- Recreational Services, New Britain
- Recycling Drop-Off Centers, New Britain
- Recycling Scrap & Waste Materials, New Britain - Scrap Metal, etc
- Refrigeration & Air Conditioning Contractors, New Britain - Installation, Repair, Sales & Service
- Refrigeration & Cooling Equipment, Parts & Supplies , New Britain - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, New Britain - Ac, Freezer, Refrigerator Repair
- Refrigerator Sales, Service & Repair, New Britain - Fridge
- Refuse Collection & Disposal Services, New Britain
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- Refuse Systems & Garbage Disposal, New Britain
- Rehabilitation Centers, Products & Services, New Britain
- Rehabilitation Specialists, New Britain
- Religious Goods & Church Supplies Stores, New Britain
- Religious Organizations, New Britain
- Rent To Own Furniture, New Britain
- Rental & Leasing Business Equipment, New Britain
- Repair Services, New Britain
- Research & Development Bureaus, New Britain - Commercial, Economic, Sociological & Educational Research
- Research Services, New Britain
- Residential, New Britain
- Residential Apartments, New Britain
- Residential Care Facilities, New Britain
- Residential Construction Contractors, New Britain - General Contractors
- Resorts & Hotels, New Britain
- Resource Centers, New Britain
- Restaurant & Food Service Management Services, New Britain
- Restaurant & Lounge, Bar, Or Pub, New Britain
- Restaurants/Food & Dining, New Britain
- Retail Book Stores, New Britain
- Retirement Communities & Home, Assisted Living & Apartments, New Britain
- Roofing Consultants, New Britain - Roofing Companies
- Roofing Contractors, New Britain - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Russian Churches, New Britain
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