| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ECHO SOUTH WEST LIMITED | 02456470 | 29/01/2002 | Dissolved |
| Pennon Products Ltd | 01499385 | 01/03/1998 | Dissolved |
| Sww Pension Trustees (Mis) Ltd | 02388783 | 01/03/1998 | Dissolved |
| Warren Jones Ltd | 02575700 | 01/03/1998 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALBION WATER (SHOTTON) LIMITED | 03695161 | 18/03/1999 | 25/03/2016 | Dissolved |
| ALBION WATER LIMITED | 03102176 | 01/02/2001 | 19/02/2004 | One Red Flag |
| CENTRE FOR ENVIRONMENTAL RESEARCH LIMITED | 03367354 | 01/02/2001 | 25/03/2016 | Dissolved |
| D.M.P. (HOLDINGS) LIMITED | 02094479 | 01/03/1998 | 25/03/2016 | Dissolved |
| EXE CONTINENTAL | 02376963 | 01/03/1998 | 25/03/2016 | Dissolved |
| HANDSIDE LIMITED | 00872814 | 04/04/2008 | 25/03/2016 | Dissolved |
| HODGEJOY RECYCLING LIMITED | 03055251 | 05/10/2001 | 25/03/2016 | Dissolved |
| LAVELLE & SONS LIMITED | 01312867 | 05/10/2001 | 25/03/2016 | Not Trading |
| MAC-GLASS RECYCLING LIMITED | SC238440 | 19/11/2004 | 25/03/2016 | Dissolved |
| PENINSULA LEASING LIMITED | 03926798 | 02/03/2000 | 25/03/2016 | Dissolved |
| PENINSULA PROPERTIES (EXETER) LIMITED | 02307220 | 01/03/1998 | 25/03/2016 | Silver |
| PENINSULA TRUSTEES LIMITED | 02476685 | 01/03/1998 | 25/03/2016 | Not Trading |
| PENINSULA WATER LIMITED | 02592778 | 01/03/1998 | 25/03/2016 | Dissolved |
| PENNON GROUP PLC | 02366640 | 01/03/1998 | 24/03/2016 | Silver |
| PENNON PENSION TRUSTEES LIMITED | 02388620 | 01/03/1998 | 25/03/2016 | Not Trading |
| PENNON SHARE SCHEMES TRUSTEES LIMITED | 02388662 | 01/03/1998 | 25/03/2016 | Dissolved |
| PENNON TRUSTEE LIMITED | 02456467 | 01/03/1998 | 30/06/2008 | Dissolved |
| PENNON WASTE MANAGEMENT LIMITED | 00574299 | 01/03/1998 | 25/03/2016 | Dissolved |
| RYDON PROPERTIES LIMITED | 02406261 | 01/03/1998 | 25/03/2016 | Dissolved |
| SOUTH WEST WATER FINANCE PLC | 05722435 | 06/04/2006 | 25/03/2016 | Silver |
| SOUTH WEST WATER LIMITED | 02366665 | 01/03/1998 | 25/03/2016 | Bronze |
| THAMES INCINERATION AND RECYCLING LIMITED | 03163599 | 05/04/2004 | 25/03/2016 | Dissolved |
| THAMES INCINERATION SERVICES LIMITED | 04259750 | 05/04/2004 | 25/03/2016 | Dissolved |
| THAMES TANKERING SERVICES LIMITED | 04259776 | 05/04/2004 | 25/03/2016 | Dissolved |
| THAMES WASTE LIMITED | 02511705 | 05/04/2004 | 25/03/2016 | Dissolved |
| THE METROPOLITAN WATER COMPANY LIMITED | 03376014 | 01/02/2001 | 25/03/2016 | Dissolved |
| VALENCIA COMMUNITIES FUND | 04293742 | 25/09/2001 | 31/03/2013 | Bronze |
| VALENCIA WASTE (THAMES) LIMITED | 02990277 | 05/04/2004 | 25/03/2016 | One Red Flag |
| VALENCIA WASTE SUFFOLK LIMITED | 02656700 | 16/10/2001 | 25/03/2016 | Not Trading |
| VIRIDOR CONTRACTING LIMITED | 03736621 | 24/03/1999 | 25/03/2016 | Dissolved |
| VIRIDOR ENTERPRISES LIMITED | 02089280 | 01/03/1998 | 25/03/2016 | Dissolved |
| VIRIDOR LIMITED | 02456473 | 10/02/2006 | 25/03/2016 | Silver |
| VIRIDOR RESOURCE (PETERBOROUGH) LIMITED | 05583788 | 05/12/2007 | 25/03/2016 | Dissolved |
| VIRIDOR RESOURCE MANAGEMENT LIMITED | 03649069 | 05/12/2007 | 25/03/2016 | One Red Flag |
| VIRIDOR RESOURCE TRANSPORT LIMITED | 05727476 | 05/12/2007 | 25/03/2016 | Dissolved |
| VIRIDOR WASTE 2 LIMITED | 02298543 | 01/03/1998 | 25/03/2016 | Silver |
| VIRIDOR WASTE LIMITED | 02662755 | 01/03/1998 | 25/03/2016 | Bronze |