- Aaran Design - DH3 1LU
- AEI Cables - DH3 2RA
- Beal Architectural - DH3 2QW
- Birtley Building Products Ltd - DH3 1JF
- Birtley Group - DH3 1JF
- Blackfriar Paints - Tor Coatings Ltd - DH3 2RE
- Cedrec Information Systems Ltd - DH3 2TB
- Expamet Building Products - DH3 1JF
- Expander UK Ltd - DH3 2SW
- Gabriele Coffee & Tea - DH3 1QT
- J H Partners - DH3 4AN
- Marian Engineering Ltd - DH3 1QT
- Marshalls Bathrooms - DH3 3QD
- Midland Steel Traders Ltd - DH3 2SW
- Minimax - DH3 25W
- Peak Test Services Ltd - DH3 3AY
- Rosh Engineering Ltd - DH3 2QW
- Rustoleum UK Ltd - DH3 2RE
- Tor Coatings - DH3 2RE
- W B Group Products - DH3 1DQ