- Active Logic Ltd - Penarth
- Beacon Printers Penarth Ltd - Penarth
- Cardiff Shutters & Blinds - Penarth
- Computerisation Ltd - Penarth
- Data Recovery Specialists - Penarth
- David Clements Ecology Ltd - Penarth
- Designer Websites Ltd - Penarth
- Harlech Industrial Doors - Penarth
- Italian Lighting Center - Penarth
- K I G G - Penarth
- Kitchener & Thomas - Penarth
- McCann & Partners - Penarth
- Ogam Igam - Penarth
- Penarth Management - Penarth
- Printmet Ltd - Penarth
- Scafftag - Penarth
- Sonic Alarm Systems - Penarth
- The Edge Systems Limited - Penarth
- Thor Developments (UK) Limited - Penarth