- A O Smith Electrical Products Ltd. - Gainsborough - DN21 1XU
- A Torn Construction Ltd - DN21 4BZ
- AMP Rose - DN21 1QT
- Barrier Healthcare - DN21 5NF
- Beaphar - DN21 2QB
- Cullen Electrical Ltd - DN21 1QB
- CWM Automation Ltd - DN21 2TU
- Elite Signs - Gainsborough - DN21 1RZ
- Emi - DN21 3ET
- Eminox - DN21 1QB
- Gainsborough Engineering Company - DN21 1QB
- Gainsborough Industrial Controls Ltd - DN21 1RZ
- Gleadell Agriculture Ltd - DN21 5TH
- Hunts Contractors Ltd - DN21 5BQ
- Jack Tighe Ltd - DN21 4NW
- Kal Designs Ltd - DN21 2AU
- Kern Liebers Ltd - DN21 1QB
- Kerry - DN21 1LG
- Knights - DN21 4NF
- Linc I T Gainsborough Ltd - DN21 2HP
- Lincolnshire Bearings & Fasteners Ltd - DN21 1QB
- Lincolnshire Machinery Ring Ltd - DN21 5TL
- Logic System Pro Audio Limited - DN21 1RZ
- Lynbond 2000 - DN21 1QB
- N & C Pallets - DN21 1QT
- New Design Group - DN21 1RZ
- Ping Europe - DN21 1XZ
- Pretorian Technologies Ltd - DN21 1QB
- Protune - DN21 5ER
- Safe-T-Solutions UK Ltd - DN21 3BT
- Silvaperl - DN21 2QB
- Smile Data Security Ltd - DN21 5TL
- Stallard Kane Associates Ltd - DN21 2BL
- Technosys PES Ltd - DN21 1RZ
- TRI Industrial Services Ltd - DN21 4JR
- United Parts Ltd - DN21 4BD
- Wefco - DN21 2AU