| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Parker,W T,Engineering Ltd | 01687253 | 06/08/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| EJ MUSK PROCESS SERVICES (SWADLINCOTE) LTD | 02183496 | 02/10/1992 | 10/01/1995 | Silver |
| EJ PARKER TECHNICAL SERVICES (CENTRAL) LTD | 01270585 | 12/07/1991 | 01/10/1993 | Amber |
| EJ PARKER TECHNICAL SERVICES GROUP LIMITED | 00480127 | 08/08/1991 | 28/02/2005 | Amber |
| MARK COBB INSTALLATIONS LTD | 01270719 | 12/07/1991 | 01/10/1993 | Dissolved |
| Parker Projects Ltd | 02639974 | 02/10/1992 | 01/07/1996 | Dissolved |
| W T Parker Control Systems Ltd | 01440795 | 12/07/1991 | 01/10/1993 | Dissolved |
| W. T. PARKER (EASTERN) LIMITED | 01440794 | 12/07/1991 | 23/06/1993 | Dissolved |
| W. T. PARKER (ELECTRICAL) LIMITED | 01270584 | 12/07/1991 | 01/10/1993 | Not Trading |
| W.T. PARKER PENSION TRUST LIMITED | 01936141 | 10/06/1991 | 31/03/2005 | Not Trading |