| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Alta Management Services Ltd | 02277639 | 09/10/1995 | Dissolved |
| BIRMINGHAM RESEARCH AND DEVELOPMENT LIMITED | 02108517 | 19/02/2002 | Dissolved |
| Flowmetrics Ltd | 02341140 | 13/10/2003 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALTA BIRMINGHAM CHINA LIMITED | 05532861 | 10/08/2005 | 23/06/2011 | Silver |
| ALTA CYCLOTRON SERVICES LIMITED | 07677805 | 21/06/2011 | 31/12/2014 | One Red Flag |
| ALTA ESTATE SERVICES LIMITED | 02341216 | 11/07/1995 | 16/12/2014 | Not Trading |
| BIRMINGHAM GLOBAL LIMITED | 01884230 | 08/09/2003 | 30/12/2014 | Silver |
| EDGBASTON PARK HOTEL AND CONFERENCE CENTRE LIMITED | 02748843 | 01/08/1999 | 31/12/2014 | Bronze |
| UNIVERSITY OF BIRMINGHAM GUILD OF STUDENTS | 06638759 | 04/07/2008 | 31/12/2014 | Bronze |