- Racing Car Supplies, London
- Racing Including Track Operations, London
- Radar Equipment & Supplies, London
- Radiator Coolant & Solvents, London - Engine Coolant
- Radiator Repair, London - Gas Tank Repair
- Radiator Repair & Rebuild, London
- Radio & Television Repair Shops , London - TV Repair
- Radio Communications Equipment & Systems , London
- Radio Stations & Broadcast Companies, London - Radio, Television & Publishers Representatives
- Radio Stations & Broadcasting Companies, London
- Radiology Equipment & Services, London - X-Ray Equipment & Supplies
- Radiotelephone Communications, London
- Railroad, London - Commuter & Passenger Transport
- Railroad Companies, London
- Railroad Equipment & Supplies Manufacturers, London
- Raw Products, London
- Ready Mix Concrete, London - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, London
- Real Estate, London - Agent, Broker & Companies
- Real Estate Agencies, London
- Real Estate Agent & Broker Services, London
- Real Estate Agent - Property Lessors, London
- Real Estate Appraiser, London - Appraisal Services
- Real Estate Appraisers & Consulting Services, London
- Real Estate Attorneys & Lawyers, London
- Real Estate Attorneys & Lawyers, London
- Real Estate Broker, London
- Real Estate Consultants, London
- Real Estate Developers, London
- Real Estate Lawyers & Attorneys, London
- Real Estate Management, London
- Real Estate Properties, London
- Real Estate Property Investment Properties, London
- Real Estate Rentals, London
- Real Estate Services, London
- Real Estate Staging Service, London
- Record Destruction Service, London
- Record Storage, Destruction & Management, London
- Recording Studio - Equipment & Rental, London
- Recording Studio Service - Sound & Video, London
- Records, Tapes, CDs - Used & Vintage, London
- Recreational Equipment & Supplies Companies, London
- Recreational Good Manufacturers, London
- Recreational Organizations, London
- Recreational Services, London
- Recycling Drop-Off Centers, London
- Recycling Scrap & Waste Materials, London - Scrap Metal, etc
- Reducing Exercise & Weight Control Services, London
- Reflexologists, London
- Reformed Churches, London
- Refrigerated Beverage Dispenser, London - Water Coolers Equipment & Supplies
- Refrigerated Storage & Warehouse, London - Warehousing
- Refrigeration & Air Conditioning Contractors, London - Installation, Repair, Sales & Service
- Refrigeration & Cooling Equipment, Parts & Supplies , London - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, London - Ac, Freezer, Refrigerator Repair
- Refrigerator Sales, Service & Repair, London - Fridge
- Refuse Collection & Disposal, London
- Refuse Collection & Disposal Services, London
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- Refuse Systems & Garbage Disposal, London
- Rehabilitation Centers, Products & Services, London
- Rehabilitation Specialists, London
- Rehabilitational Job Training Services, London
- Relief Organizations, London
- Religious Education, London
- Religious Goods & Church Supplies Stores, London
- Religious Organizations, London
- Relocation Services, London
- Rental & Leasing Business Equipment, London
- Repair Services, London
- Research & Development Bureaus, London - Commercial, Economic, Sociological & Educational Research
- Research & Development Labs, London - Laboratories
- Research Clinics, London
- Research Services, London
- Residential, London
- Residential Apartments, London
- Residential Architect, London
- Residential Care Facilities, London
- Residential Construction Contractors, London - General Contractors
- Residential Electricians, London - Electric Contractors
- Residential Landfills, London
- Resorts & Hotels, London
- Restaurant & Food Service Management Services, London
- Restaurant & Lounge, Bar, Or Pub, London
- Restaurant Equipment, London
- Restaurant Equipment & Supplies, London
- Restaurant Equipment Repair & Service, London - Bakery, Beverage, Food & Soda Fountain Equipment
- Restaurant Supplies & Equipment, London
- Restaurants - Breakfast Brunch Lunch, London
- Restaurants/Food & Dining, London
- Resume Service, London
- Retail Book Stores, London
- Retirement & Estate Planning, London
- Retirement Communities & Home, Assisted Living & Apartments, London
- Retirement Homes, London
- Retirement Planning Consultants & Services, London
- Ricoh Copy Machines, London
- Riding & Rodeo Services, London
- Riding Apparel & Equipment, London
- Risk Management Consultants, London
- Road Construction, London - Companies & Contractors
- Road Construction & Repair Contractors, London
- Roadside Assistance, Road Service & Towing Service, London
- Robots & Robotics System, London
- Rodeo & Equestrian Equipment & Supplies, London
- Rods, Springs & Suspension Equipment & Supplies, London
- Roofing Consultants, London - Roofing Companies
- Roofing Contractors, London - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, London
- Rooming & Boarding Houses, London
- Rubber Products, London
- Rubber Products - Retail, London
- Rubber Stamps, London
- Russian Churches, London
- Rust Preventives, London
- Ryder Truck Rental , London - Ryder Moving
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