| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| A P Engineering & Construction Ltd | 01469971 | 01/04/1990 | Dissolved |
| Alpha Power (Engineers) Ltd | 01983897 | 01/04/1991 | Dissolved |
| VOYAGER SAFETY MANAGEMENT LIMITED | 05216652 | 17/12/2004 | Dissolved |
| VSM YORK LTD | 01694131 | 08/05/1991 | Dissolved |
| Voyager Infoserve Ltd | 03790087 | 15/06/1999 | Dissolved |
| York Linings (Properties) Ltd | 02583617 | 19/02/1991 | Dissolved |
| York Linings (Scotland) Ltd | SC074260 | 30/11/1988 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALTRAD YORK LININGS LIMITED | 01159919 | 30/05/1991 | 29/07/2011 | Silver |
| POWERTHERM CONTRACT SERVICES LTD. | 02432954 | 25/03/2005 | 08/08/2007 | Bronze |
| POWERTHERM CONTRACT SERVICES LTD. | 02432954 | 16/10/1991 | 08/08/2007 | Bronze |
| PRO-ALLIANCE SERVICES LIMITED | 04566601 | 25/03/2005 | 01/11/2006 | Insolvent |
| PRO-ALLIANCE SERVICES LIMITED | 04566601 | 06/01/2003 | 01/11/2006 | Insolvent |
| YL HOLDINGS LIMITED | 02498514 | 03/05/1991 | 29/07/2011 | Dissolved |
| York Linings (Properties) Ltd | 02583617 | 19/02/1991 | 30/09/1991 | Dissolved |