- 3C Test Ltd - Northamptonshire
- Actreg (U.K.) Ltd - Northamptonshire
- AIS X-Ray (Advanced Inspection Services) - Northamptonshire
- Allbrite Service Group - Northamptonshire
- ALPHA-CURE Ltd - Northamptonshire
- AMC (UK) Fasteners Ltd - Northamptonshire
- Axess International Ltd - Northamptonshire
- Barton Plant Ltd - Northamptonshire
- Bassett and Findley Ltd - Northamptonshire
- Bryco Ltd (Diesel Engine Division) - Northamptonshire
- Calibre Marketing Services Ltd - Northamptonshire
- Carmichael Engineering Ltd - Northamptonshire
- Carrs Welding Technologies Ltd - Northamptonshire
- Chase Diamond Tools International Ltd - NORTHAMPTONSHIRE
- Cognex UK Ltd - Northamptonshire
- Columbia Metals Ltd - Northamptonshire
- Credit Assist Ltd - Northamptonshire
- Crosby Composites - Northamptonshire
- Davies Odell ltd - Northamptonshire
- DisplayKit - Northamptonshire
- droptestkits.com Ltd - Northamptonshire
- Ducting Express - Northamptonshire
- eLocker - Northamptonshire
- Enigma Translation Ltd - Northamptonshire
- Kanflu Ltd - Northamptonshire
- Minitek Mouldings Ltd - Northamptonshire
- Premier Laser and Wasterjet Cutting - Northamptonshire
- Riverside Printers - Northamptonshire
- Saeloc Ltd - Northamptonshire
- Security Matters - Northamptonshire
- Smilegems - Northamptonshire
- Spectrum Chemicals Ltd - Northamptonshire
- TCI Seating Ltd - Northamptonshire
- Technifast Ltd - Northamptonshire
- Total Office Products & Services Ltd - Northamptonshire
- Universal Adhesive Systems Ltd - Northamptonshire
- Watford Control Instruments Ltd - Northamptonshire
- Woodway Ltd - Northamptonshire
- Y D P Ltd - Northamptonshire