| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| OACG LIMITED | 06771633 | 11/12/2008 | Dissolved |
| OPEN AUTOMATION & CONTROL LIMITED | 04002196 | 25/05/2000 | Dissolved |
| Object Automation (U K) Ltd | 03555074 | 16/06/1998 | Dissolved |
| THE EFFECTIVE MARKETING COMPANY LIMITED | 05752898 | 03/12/2007 | Dissolved |
| Unit-C Ltd | 01628727 | 04/04/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CONTROL NETWORK SOLUTIONS LIMITED | 03168401 | 01/04/1999 | 05/03/2009 | Dissolved |
| ICS TRIPLEX TECHNOLOGY LIMITED | 01017322 | 01/10/1998 | 09/05/2000 | Dissolved |
| INDUSTRIAL CONTROL SERVICES GROUP LTD | 02553840 | 01/10/1998 | 09/05/2000 | Dissolved |
| TACTICAL CONTROL SOLUTIONS LIMITED | 04323423 | 15/11/2001 | 31/03/2013 | Gold |
| THE CASS SCHEME LIMITED | 03921817 | 06/07/2009 | 16/07/2012 | Dissolved |