- Bakeries, Lothian
- Bank Supplies & Equipment, Lothian
- Banks, Lothian
- Barbecue Restaurants, Lothian
- Barbers, Lothian
- Battery, Lothian - Retail Batteries Stores
- Battery Repair & Rebuilding, Lothian
- Beauty Salons, Lothian
- Beverage Stores, Lothian
- Boat & Yacht Charter, Lothian
- Breakfast Restaurants, Lothian
- Builders & Contractors, Lothian
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- Builders & Contractors - More, Lothian
- Building Construction Consultants, Lothian - Construction Management & Consulting
- Building Design & Construction Consultants, Lothian
- Building Materials & Supplies, Lothian
- Building Site Preparation Contractors, Lothian - Land Preparation & Land Clearing
- Burglar & Alarm Service, Lothian - Monitoring Service
- Burglar Alarm Systems, Lothian
- Bus Lines, Lothian - Bus Transportation
- Bus Lines Ticket Agencies, Lothian
- Bus Rental & Charter Bus Service, Lothian
- Business Management Consultants, Lothian
- Business Services, Lothian
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