- Absolute Calibration Ltd - PO16 9RD
- Armorgard ltd - PO16 9SF
- Armorgard Security Products - PO16 9SF
- C & P T Enterprises - PO16 9BB
- Chase Consultancy Ltd - PO16 8XT
- Curzon International - PO16 8XG
- Dwinex Sheet Metal Ltd - PO16 8XU
- Ellis Integrated Systems Ltd - PO16 8XT
- Envirochem - PO16 8SS
- Gyoury Self - PO16 8SS
- Hillcrest Machinery & Engineering (Portchester) Ltd - PO16 8XU
- IPA Supplies - PO16 8XD
- K & N Finishers - PO16 9SF
- Mercator Media Ltd - PO16 0RA
- MiMtec Ltd - PO16 7FF
- Opus International Consultants - PO16 0QS
- Par Car Ltd - PO16 0SU
- Phoenix systems - PO16 8XQ
- Portchester Engineering - PO16 9HP
- Prosig - PO16 7BQ
- Protec Technical - PO16 0BZ
- Protool Plastics - PO16 8XG
- Proxswitch - PO16 0TZ
- QGate - PO16 8XT
- Quirepace Ltd - PO16 8XU
- R S Hill & Sons - PO16 8SX
- Reliass - PO16 8AB
- Servian Fire & Security Security Ltd - PO16 8XT
- South Coast Forklift Training - PO16 8AB
- Southern Belting Ltd - PO16 8XU
- Talking Plastics - PO16 9DR
- Underwood Engineering - PO16 9SE
- V R S Precision Engineering Ltd - PO16 8ST
- Virco Ltd - PO16 0TG