Machine Tool Acc. & Services
Machine Tools Sales
Machinery Ind. & Commercial
Magicians Supplies
MailOrder & Catalogue Shopping
Make-Up Artists
Management Training
Manufacturers' Agents
Marble Specialists
Marinas
Marine Engineers
Marine Equip. & Supplies
Marine Services
Marine Surveyors
Market Gardeners
Market Research
Marketing Consultants
Marquees Tents etc.
Martial Arts Instruction
Masseuse
Materials Handling Equipment

Measuring Instruments
Meat Wholesale
Mechanical Engineers
Medical & Dental Laboratories
Medical Equipment Mnfrs.
Medical Instruments Mnfrs.
Menswear Retail
Mental Health Centres
Merchant Banks
Message & Greeting Services
Metal Finishing Services
Metal Industries Primary
Metal Products Fabricated
Metal Workers
Microfilming Services
Microwave Ovens
Mills & Millers
Mini Buses Hire & Leasing
Mirrors & Decorative Glass
Mobile Homes
Mobile Phones
Model Makers

Model Shops
Modelling Agencies
Monumental Masons
Mortgage Brokers
Mortgages Direct
MOT Testing Centres
Motor Cycle Breakers
Motor Cycle Parts & Accessories
Motor Cycles Sales & Service
Motor Cycling Ins. & Testing
Motor Factors
Motor Sports
Motoring Organisations
Multimedia Publishers
Museums & ArtGalleries
Music Management & Promotion
Music Schools
Music Shops
Music Teachers
Musical Instrument Repairs & Serv.
Musical Instruments & Sheet Music
Musicians & Composers