| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Bonstone Limited | 02466037 | 27/01/1992 | Dissolved |
| WESSEX WATER LIMITED | 02366633 | 01/02/2017 | Amber |
| WESSEX WATER SERVICES LIMITED | 02366648 | 01/11/2005 | Silver |
| YTL LAND AND PROPERTY (UK) LTD | 10015163 | 13/03/2017 | Not Trading |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BABCOCK SOUTHERN HOLDINGS LIMITED | 01915771 | 19/05/2003 | 09/07/2010 | Bronze |
| COMMERZBANK FINANCE LIMITED | 00551334 | 01/01/1998 | 18/12/1998 | Silver |
| CORNHILL HOLDINGS LIMITED | 00609285 | 31/12/1994 | 05/01/1998 | Dissolved |
| GARTMORE GROUP LIMITED | FC027672 | 27/11/2009 | 04/04/2011 | Dissolved |
| Gleacher Natwest Ltd | 03161289 | 19/02/1996 | 05/01/1998 | Dissolved |
| JOHN LEWIS PARTNERSHIP PLC | 00238937 | 21/08/2006 | 28/02/2014 | Bronze |
| JOHN LEWIS PARTNERSHIP TRUST LIMITED | 00481406 | 27/03/2007 | 18/08/2013 | Gold |
| MAUDSLEY CHARITY | 11071377 | 22/02/2018 | 29/11/2022 | Silver |
| NATWEST (HMHP) LIMITED | 02008984 | 09/09/1993 | 05/01/1998 | Dissolved |
| NATWEST FINANCE LIMITED | 00839590 | 23/04/1993 | 07/02/1997 | Dissolved |
| WATES GROUP LIMITED | 01824828 | 01/12/2012 | 30/09/2019 | Silver |