| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Botan Ltd | 00429595 | 20/01/1997 | Dissolved |
| Dramwell Ltd | 02141612 | 20/01/1997 | Dissolved |
| Dyvell Healthcare Limited | 02829561 | 20/01/1997 | Dissolved |
| Dyvell Medical Services Limited | 02855054 | 20/01/1997 | Dissolved |
| Dyvell Services Ltd | 02635614 | 20/01/1997 | Dissolved |
| Esmil Ltd | 02406558 | 20/01/1997 | Dissolved |
| Fospur International Ltd | 00253582 | 20/01/1997 | Dissolved |
| Swivelcross Ltd | 02462855 | 20/01/1997 | Dissolved |
| Themerecord Ltd | 02560186 | 20/01/1997 | Dissolved |
| Trackturn Ltd | 01884295 | 20/01/1997 | Dissolved |
| Verticam Ltd | 02354952 | 20/01/1997 | Dissolved |
| Water Pension Trustees Ltd | 02272131 | 01/04/1997 | Dissolved |
| White Rose Clinical Services Ltd | 02179253 | 20/01/1997 | Dissolved |
| Y W Enterprises Ltd | 02180734 | 20/01/1997 | Dissolved |
| Yorkshire Water (Five) Finance Ltd | 02933981 | 20/01/1997 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 00065986 PLC | 00065986 | 13/04/1992 | 31/10/1993 | Dissolved |
| 00065986 PLC | 00065986 | 13/04/1992 | 30/11/1993 | Dissolved |
| DYVELL (HOLDINGS) LIMITED | 02531375 | 20/01/1997 | 01/11/1999 | Dissolved |
| DYVELL INCINERATION SERVICES LIMITED | 02858330 | 20/01/1997 | 01/11/1999 | Dissolved |
| DYVELL LIMITED | 02618679 | 20/01/1997 | 01/11/1999 | Dissolved |
| DYVELL WASTE CARE LIMITED | 02847513 | 20/01/1997 | 01/11/1999 | Dissolved |
| EVANS EASYLET LIMITED | 03032115 | 13/03/1995 | 01/04/1995 | Dissolved |
| EVANS EASYLET LIMITED | 03032115 | 20/01/1998 | 12/01/2001 | Dissolved |
| Global Opd Ltd | 01715640 | 20/01/1997 | 01/11/1999 | Dissolved |
| Gmi Springhill (A) Ltd | 04348609 | 30/01/2002 | 10/05/2002 | Dissolved |
| Gmi Springhill (B) Ltd | 04348606 | 30/01/2002 | 10/05/2002 | Dissolved |
| H S (516) LIMITED | 02700636 | 26/03/1992 | 31/10/1993 | Dissolved |
| H S (516) LIMITED | 02700636 | 26/03/1992 | 30/11/1993 | Dissolved |
| KELDA GROUP PENSION TRUSTEES LIMITED | 03309639 | 12/03/1997 | 01/04/2001 | Not Trading |
| KELDA GROUP SHARE SCHEME TRUSTEES LIMITED | 02404390 | 20/01/1997 | 05/11/1999 | Dissolved |
| KELDA LIMITED | 02179230 | 20/01/1997 | 05/11/1999 | Gold |
| KELDA WATER SERVICES LIMITED | 02180706 | 17/11/1994 | 16/12/1998 | Gold |
| KEYLAND DEVELOPMENTS LIMITED | 02180728 | 04/11/1994 | 21/01/1998 | Silver |
| KEYLAND DEVELOPMENTS LIMITED | 02180728 | 25/11/1997 | 05/01/1998 | Silver |
| KEYLAND GREGORY LIMITED | 04312614 | 25/01/2002 | 31/03/2002 | Dissolved |
| KEYLAND INVESTMENT PROPERTIES LIMITED | 03020398 | 10/02/1995 | 30/03/1998 | Dissolved |
| R. B. QUADRANGLE LEASING LIMITED | 01938865 | 01/09/1995 | 12/10/1995 | Silver |
| R. B. QUADRANGLE LEASING LIMITED | 01938865 | 01/09/1995 | 17/11/1995 | Silver |
| Superdome (U K) Ltd | 02878522 | 23/03/1998 | 30/10/1998 | Dissolved |
| TEMPLEGATE DEVELOPMENTS LIMITED | 04125370 | 12/01/2001 | 18/10/2001 | Bronze |
| The Water Mirror Image Pension Trustees Ltd | 02396172 | 01/06/1997 | 31/03/2000 | Dissolved |
| WELBECK WASTE MANAGEMENT LIMITED | 02736095 | 11/02/1997 | 29/04/1998 | Bronze |
| WHITE ROSE (LEEDS) LIMITED | 02878728 | 20/01/1998 | 12/01/2001 | Silver |
| WHITE ROSE DEVELOPMENT ENTERPRISES LIMITED | 02454379 | 20/01/1998 | 12/01/2001 | Dissolved |
| WHITE ROSE ENVIRONMENTAL OPERATIONS LIMITED | 02428371 | 16/12/1994 | 17/06/1997 | Dissolved |
| WHITE ROSE PROPERTY INVESTMENTS LIMITED | 02454385 | 20/01/1998 | 07/05/1998 | Dissolved |
| WHITEHALL LANDING LIMITED | 04160799 | 02/04/2001 | 31/03/2002 | Dissolved |
| White Rose Group Ltd | 03174349 | 29/03/1996 | 29/03/1996 | Dissolved |
| YORKSHIRE CHEMICALS (PENSION TRUST A) LIMITED | 00575282 | 25/07/1991 | 29/10/1993 | Dissolved |
| YORKSHIRE CHEMICALS (PENSION TRUST A) LIMITED | 00575282 | 25/07/1991 | 30/11/1993 | Dissolved |
| YORKSHIRE CHEMICALS (PENSION TRUST) LIMITED | 01295411 | 25/07/1991 | 31/10/1993 | Dissolved |
| YORKSHIRE CHEMICALS (PENSION TRUST) LIMITED | 01295411 | 25/07/1991 | 31/10/1993 | Dissolved |
| YORKSHIRE CHEMICALS PLC | 01754437 | 13/04/1991 | 29/10/1993 | Dissolved |
| YORKSHIRE INDUSTRIES LIMITED | 01754438 | 13/04/1991 | 29/10/1993 | Dissolved |
| YORKSHIRE WATER FIRST FINANCE LIMITED | 02180720 | 20/01/1997 | 25/11/1997 | Dissolved |
| YORKSHIRE WATER LIMITED | 03778498 | 28/05/1999 | 01/11/1999 | Not Trading |
| YORKSHIRE WATER PROJECTS LIMITED | 03028361 | 31/12/1997 | 18/08/1999 | Dissolved |
| YORKSHIRE WATER SERVICES LIMITED | 02366682 | 01/04/1995 | 01/04/1998 | Silver |
| Yorkshire Water (China) Ltd | 02354948 | 30/06/1997 | 20/04/1999 | Dissolved |