- Access Plus Scotland Ltd - Irvine
- Accoson - Irvine
- Ardagh Group - Irvine
- Blair's Catering Equipment - Irvine
- C C S Engineering Co. Ltd - Irvine
- Calman Technology - Irvine
- CCL North - Irvine
- CV Labels Ltd - Irvine
- DrainPro Ayrshire - Irvine
- Dupuy Design - Irvine
- Gas Turbine Solutions Ltd - Irvine
- GMC Corsehill Ltd - Irvine
- Graham the Plumbers' Merchants - Irvine
- J W Brown Industrial Supplies - Irvine
- John Aird & Co Ltd - Irvine
- John D Dunlop Ltd - Irvine
- Kelvin TOP-SET Ltd - Irvine
- Npi Solutions Ltd - Irvine
- Omnitool Precision Engineering - Irvine
- Scrimsign Microelectronics Ltd - Irvine
- Sigma Engineering Product Design Ltd - Irvine
- Thistle Help Ltd - Irvine
- Universal Steels & Aluminium - Irvine