| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Coasthouse Ltd | 03078450 | 26/07/1995 | Dissolved |
| Sevenstar Systems Ltd | 03963067 | 16/05/2000 | Dissolved |
| WESTWOOD DESIGN LIMITED | 06511223 | 21/02/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Custom Communications Ltd | 03032929 | 21/04/1995 | 12/11/1995 | Dissolved |
| Navico Ltd | 01720184 | 12/07/2007 | 20/11/2007 | Dissolved |
| Navico Margate Ltd | 01781900 | 12/07/2007 | 20/11/2007 | Dissolved |
| OCEAN SIGNAL LIMITED | 06627101 | 03/09/2008 | 30/04/2015 | Silver |
| SEVENSTAR ELECTRONICS LIMITED | 04482935 | 11/07/2002 | 21/11/2002 | Dissolved |
| Simtek Ltd | 03107017 | 12/07/2007 | 20/11/2007 | Dissolved |