- Asbestos SOS Asbestos Removal Darlington - DL3 7QH
- Carmel Safety Training Services Ltd - DL3 8DQ
- Central Stationers Ltd - DL3 8TF
- Diamond Electrical - DL3 7PR
- Fletcher Joinery - DL3 0YL
- G&A Security - DL3 0PH
- Harrison Lightning & Earthing Ltd - DL3 0PX
- Imperial Leather Repair - DL3 0QP
- Mech-Tool Engineering Ltd - DL3 0QT
- N J S Ltd - DL3 0TD
- Performance Computers - DL3 7JR
- Rennyco Ltd - DL3 0QT
- Sapphire - DL3 0PH
- Specialist Coating Ltd - DL3 0PP
- Studio 2000 - DL3 7JT
- Watsons Removals - DL3 7SD
- Zog Global Ltd - DL3 6NQ