- National Flexible - 2 Battlefield View, Bradford, West Yorkshire, BD11 2PT
- National Granite Centre - Vulcan Stone Works, Wolverhampton, Birmingham, WV2 2BS
- National Instruments Corporation (UK) Ltd - Measurement House, Newbury, Berkshire, RG14 2PZ
- National Lamps and Components - Stadiumway, Harlow, Essex, CM19 5FG
- National Pallets - Crown Yard, Heathfield, East Sussex, TN21 8QZ
- National Polytunnels - 4 Cable Court, Preston, Lancashire, PR2 9YW
- National Property Trade - 3 Leeward House, Plantation Wharf, London, SW11 3TX
- National Safety Training Services - Dunston House, Hull, Yorkshire, HU4 6PA
- National Sameday - Kimpton Road, Luton, Bedfordshire, LU2 0SX
- National Signs Limited - Smeckley Wood Close, Chesterfield, Derbyshire, S41 9PZ
- National Stabling - Ashford Road, Kent, ME13 0JX
- National Stair Nosings & Floor Edgings - 552 Mitcham Road, Croydon, Surrey, CR0 3AA
- National Strapping - Unit 1-2, Liverpool, Merseyside, L7 9PL
- National Structures - 4 Cable Court, Preston, Lancashire, PR2 9YW
- National Test Services - The White House, Gloucester, GL2 5JA
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