| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DYVELL (HOLDINGS) LIMITED | 02531375 | 01/11/1999 | 18/07/2000 | Dissolved |
| DYVELL INCINERATION SERVICES LIMITED | 02858330 | 01/11/1999 | 18/07/2000 | Dissolved |
| DYVELL LIMITED | 02618679 | 01/11/1999 | 18/07/2000 | Dissolved |
| DYVELL WASTE CARE LIMITED | 02847513 | 01/11/1999 | 18/07/2000 | Dissolved |
| FEATUREPACK LIMITED | 03480237 | 27/04/2007 | 22/12/2014 | Dissolved |
| FRE LIMITED | 04337181 | 27/04/2007 | 31/12/2014 | Dissolved |
| GLANDWR CYFYNGEDIG | 04154570 | 27/04/2007 | 31/12/2014 | Not Trading |
| Global Opd Ltd | 01715640 | 01/11/1999 | 18/07/2000 | Dissolved |
| KELDA BUFFER LIMITED | 06433787 | 19/09/2008 | 18/12/2014 | Dissolved |
| KELDA BUFFER LIMITED | 06433787 | 19/09/2008 | 18/12/2014 | Dissolved |
| KELDA EUROBOND CO LIMITED | 06433768 | 19/09/2008 | 31/12/2014 | Silver |
| KELDA FINANCE (NO.1) LIMITED | 08066326 | 25/06/2012 | 31/12/2014 | Silver |
| KELDA FINANCE (NO.2) LIMITED | 08072102 | 25/06/2012 | 31/12/2014 | Silver |
| KELDA FINANCE (NO.3) PLC | 08270049 | 26/10/2012 | 31/12/2014 | Silver |
| KELDA FIRST INVESTMENTS LIMITED | 03886302 | 27/04/2007 | 31/12/2014 | Dissolved |
| KELDA GROUP LIMITED | 02366627 | 27/04/2007 | 31/12/2014 | Gold |
| KELDA GROUP LIMITED | 02366627 | 25/09/2008 | 31/12/2014 | Gold |
| KELDA GROUP QUEST TRUSTEES LIMITED | 03847226 | 11/10/1999 | 31/12/2014 | Dissolved |
| KELDA GROUP SHARE SCHEME TRUSTEES LIMITED | 02404390 | 27/04/2007 | 31/12/2014 | Dissolved |
| KELDA HOLDCO LIMITED | 06433799 | 19/09/2008 | 18/12/2014 | Dissolved |
| KELDA HOLDCO LIMITED | 06433799 | 19/09/2008 | 18/12/2014 | Dissolved |
| KELDA JUNIOR HOLDCO LIMITED | 06433796 | 19/09/2008 | 18/12/2014 | Dissolved |
| KELDA JUNIOR HOLDCO LIMITED | 06433796 | 19/09/2008 | 18/12/2014 | Dissolved |
| KELDA LIMITED | 02179230 | 05/11/1999 | 18/07/2000 | Gold |
| KELDA NON-REG HOLDCO LIMITED | 06433788 | 19/09/2008 | 31/12/2014 | Dissolved |
| KELDA NON-REG HOLDCO LIMITED | 06433788 | 19/09/2008 | 31/12/2014 | Dissolved |
| KELDA PIK CO LIMITED | 06436070 | 19/09/2008 | 18/12/2014 | Dissolved |
| KELDA PIK CO LIMITED | 06436070 | 19/09/2008 | 18/12/2014 | Dissolved |
| KELDA SECOND INVESTMENTS LIMITED | 03886310 | 27/04/2007 | 31/12/2014 | Dissolved |
| KELDA WATER SERVICES LIMITED | 02180706 | 10/04/2003 | 01/01/2005 | Gold |
| SAFE-MOVE LIMITED | 04868680 | 09/01/2009 | 31/12/2014 | Not Trading |
| SALTAIRE WATER LIMITED | 06433802 | 19/09/2008 | 31/12/2014 | Bronze |
| SALTAIRE WATER LIMITED | 06433802 | 19/09/2008 | 31/12/2014 | Bronze |
| THE YORK WATERWORKS LIMITED | 02511298 | 25/09/2000 | 01/01/2005 | Dissolved |
| THE YORK WATERWORKS LIMITED | 02511298 | 08/12/2008 | 31/12/2014 | Dissolved |
| THREE SIXTY WATER SERVICES LIMITED | 05612103 | 31/03/2010 | 16/07/2013 | Bronze |
| YORKSHIRE WATER ESTATES LIMITED | 03174657 | 27/04/2007 | 31/12/2014 | Dissolved |
| YORKSHIRE WATER FIRST FINANCE LIMITED | 02180720 | 27/04/2007 | 31/12/2014 | Dissolved |
| YORKSHIRE WATER LIMITED | 03778498 | 27/04/2007 | 31/12/2014 | Not Trading |
| YORKSHIRE WATER PROJECTS LIMITED | 03028361 | 27/04/2007 | 31/12/2014 | Dissolved |
| YORKSHIRE WATER SERVICES FINANCE LIMITED | 04636719 | 27/04/2007 | 31/12/2014 | Bronze |
| YORKSHIRE WATER SERVICES HOLDINGS LIMITED | 06815156 | 10/02/2009 | 31/12/2014 | Gold |
| YORKSHIRE WATER SERVICES HOLDINGS LIMITED | 06815156 | 10/02/2009 | 31/12/2014 | Gold |
| YORKSHIRE WATER SERVICES LIMITED | 02366682 | 25/09/2000 | 01/01/2005 | Silver |
| York Waterworks Enterprises Ltd | 03050705 | 25/09/2000 | 01/01/2005 | Dissolved |
| York Waterworks Enterprises Ltd | 03050705 | 09/01/2009 | 31/12/2014 | Dissolved |