| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Hall,John F,Ltd | 00378131 | 12/07/1991 | Dissolved |
| Pandelco (Enclosures) Ltd | 01766818 | 28/06/1996 | Dissolved |
| Parker,W T,Engineering Ltd | 01687253 | 06/08/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BURTON TRAINING ORGANISATION LIMITED | 03043197 | 03/05/1996 | 28/02/2002 | Silver |
| EJ MUSK PROCESS SERVICES (SWADLINCOTE) LTD | 02183496 | 02/10/1992 | 31/01/1997 | Silver |
| EJ MUSK PROCESS SERVICES (SWADLINCOTE) LTD | 02183496 | 02/10/1992 | 25/10/2006 | Silver |
| EJ PARKER TECHNICAL SERVICES (CENTRAL) LTD | 01270585 | 12/07/1991 | 25/10/2006 | Amber |
| EJ PARKER TECHNICAL SERVICES GROUP LIMITED | 00480127 | 08/08/1991 | 11/12/2001 | Amber |
| EJ PARKER TECHNICAL SERVICES GROUP LIMITED | 00480127 | 08/08/1991 | 25/10/2006 | Amber |
| MARK COBB INSTALLATIONS LTD | 01270719 | 12/07/1991 | 25/10/2006 | Dissolved |
| PANDELCO LIMITED | 01767620 | 28/06/1996 | 25/10/2006 | Dissolved |
| Parker Projects Ltd | 02639974 | 02/10/1992 | 01/12/1993 | Dissolved |
| Parker Projects Ltd | 02639974 | 02/10/1992 | 01/07/1996 | Dissolved |
| W T Parker Control Systems Ltd | 01440795 | 12/07/1991 | 01/07/2003 | Dissolved |
| W. T. PARKER (EASTERN) LIMITED | 01440794 | 12/07/1991 | 25/10/2006 | Dissolved |
| W. T. PARKER (ELECTRICAL) LIMITED | 01270584 | 12/07/1991 | 25/05/2004 | Not Trading |
| W.T. PARKER PENSION TRUST LIMITED | 01936141 | 10/06/1991 | 25/10/2006 | Not Trading |