- Automotive and Transportation
- Marine Equipment Manufacture
- Minibus & Van Sales
- Mobile Refrigerated Van Hire
- Mobility & Nursing Equipment
- Motor Cycle and Component Manufacturers
- Motor Cycle Parts & Accessories
- Motor Cycles and Scooters
- Motor Racing & Motor Sports Services
- Motorbike & Scooter Service & Repair
- Business Services
- Mail Forwarding & Mail boxes
- Manufacturing & Industry Grading
- Marine Equipment Manufacture & Supply
- Markets & Car Boot Organisers
- Mortgage Brokers
- Catering Supplies
- Mineral & Spring Water Suppliers
- Electronics and Technology
- Mobile Phone, Pager & Telephone Communications Retail
- Mobile Phones
- Multimedia Production Companies
- Gifts and Giftware
- Model Makers
- Health and Beauty
- Medical Furniture
- Industrial Supplies
- Marble Merchants
- Measurement Instruments & Equipment Manufacturers
- Metal Finishing Products - Wholesale
- mixing vessels
- Mould Manufacturers
- Miscellaneous
- Magic & Ellusionist Shops- Retail
- Magicians & Clowns
- Magnesium Oxide Specialists
- Monumental Masons & Memorials
- Museums
- Musicians & Music Writers
- Pets and Aquatics
- Marine & Aquarium Lighting
- Sports and Recreation
- Musical Instrument - Manufacturers
- Musical Instrument Retailers