| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Fairclough Norwegian Contractors Ltd | 02444138 | 17/11/1991 | Dissolved |
| LES BELL CONSULTANCY LTD | 07207026 | 29/03/2010 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AMEC CIVIL ENGINEERING LIMITED | 01265199 | 08/06/1992 | 31/12/1992 | Not Trading |
| AMEC CONSTRUCTION LIMITED | 02729912 | 03/08/1992 | 06/09/1996 | Dissolved |
| AMEC PROJECT INVESTMENTS LIMITED | 02619408 | 01/01/1999 | 15/06/2001 | Bronze |
| AYR ENVIRONMENTAL SERVICES LIMITED | SC198368 | 10/10/2000 | 27/07/2001 | Silver |
| BIRCHPOINT NO. 1 | 03455575 | 05/08/2004 | 02/04/2007 | Dissolved |
| CATCHMENT HIGHLAND HOLDINGS LIMITED | SC168790 | 01/11/2001 | 21/10/2003 | Amber |
| CATCHMENT HIGHLAND LIMITED | SC163036 | 01/11/2001 | 21/10/2003 | Amber |
| CATCHMENT LIMITED | SC163035 | 15/05/2009 | 09/11/2010 | Amber |
| CATCHMENT MORAY HOLDINGS LIMITED | SC206596 | 01/11/2001 | 21/10/2003 | Amber |
| CATCHMENT MORAY LIMITED | SC206595 | 01/11/2001 | 21/10/2003 | Amber |
| CATCHMENT TAY HOLDINGS LIMITED | SC186500 | 15/05/2009 | 09/11/2010 | Bronze |
| CATCHMENT TAY LIMITED | SC186492 | 01/11/2001 | 21/10/2003 | Silver |
| INTERNATIONAL WATER U.U. (HIGHLAND) LIMITED | SC166789 | 09/10/2001 | 21/10/2003 | One Red Flag |
| METER FIT (NORTH EAST) LIMITED | 04410548 | 29/06/2006 | 25/04/2007 | One Red Flag |
| METER FIT (NORTH WEST) LIMITED | 04345746 | 29/06/2006 | 25/04/2007 | One Red Flag |
| METER SERVE (NORTH EAST) LIMITED | 04410547 | 29/06/2006 | 25/04/2007 | Amber |
| MSNW DORMANT COMPANY LIMITED | 04345745 | 29/06/2006 | 25/04/2007 | Dissolved |
| NEWCASTLE ESTATE PARTNERSHIP HOLDINGS LIMITED | 03473715 | 05/03/1998 | 02/07/2001 | Gold |
| RENO (HIGHLAND) LIMITED | 03131188 | 31/10/2002 | 02/04/2007 | Amber |
| RENO (MORAY) LIMITED | 04141423 | 31/10/2002 | 02/04/2007 | Amber |
| RENO (TAY) LIMITED | 03528593 | 18/05/2009 | 31/03/2010 | Silver |
| THE NEWCASTLE ESTATE PARTNERSHIP LIMITED | 03124864 | 05/03/1998 | 02/07/2001 | Silver |
| UNITED UTILITIES (EUROPE) LIMITED | 04731109 | 18/05/2009 | 31/03/2010 | Dissolved |
| UNITED UTILITIES (OVERSEAS HOLDINGS) LIMITED | 02536732 | 14/06/2007 | 31/03/2010 | Not Trading |
| UNITED UTILITIES INTERNATIONAL HOLDINGS LIMITED | 04617044 | 04/07/2007 | 31/03/2010 | Dissolved |
| UNITED UTILITIES INTERNATIONAL LIMITED | 02344587 | 07/01/2002 | 02/04/2007 | Gold |
| UNITED UTILITIES MIDDLE EAST LIMITED | 03325273 | 20/11/2008 | 31/03/2010 | Dissolved |
| VEOLIA VODA (SOFIA) LIMITED | 04978605 | 12/12/2003 | 05/02/2008 | Dissolved |
| VEOLIA WATER OPERATIONAL SERVICES (HIGHLAND) LIMITED | 02850328 | 15/10/2001 | 12/09/2003 | Gold |
| VEOLIA WATER OPERATIONAL SERVICES (MORAY) LIMITED | 04146446 | 15/10/2001 | 12/09/2003 | Silver |
| VEOLIA WATER OPERATIONAL SERVICES (TAY) LIMITED | 03354180 | 15/10/2001 | 12/09/2003 | Silver |
| WASTEWATER MANAGEMENT HOLDINGS LIMITED | SC201429 | 11/10/2000 | 27/07/2001 | Silver |