| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Basinhall Ltd | 06412415 | 30/10/2007 | Dissolved |
| GUIDE DOGS FOR THE BLIND ASSOCIATION(THE) | 00291646 | 04/07/2024 | Gold |
| ISC GROUP GLOBAL C.I.C. | 09664345 | 20/10/2023 | Bronze |
| Synesis Administration Ltd | 06639659 | 07/07/2008 | Dissolved |
| Synesis Finance Ltd | 05777907 | 11/04/2006 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABRDN PLC | SC286832 | 15/10/2014 | 24/06/2016 | Silver |
| BT GROUP PLC | 04190816 | 01/11/2014 | 11/07/2024 | Bronze |
| GE KEYNES HOLDINGS LIMITED | 01044679 | 25/07/1997 | 12/08/1999 | Dissolved |
| MARINE AND GENERAL MUTUAL LIFE ASSURANCE SOCIETY | 00000006 | 01/12/2010 | 30/11/2013 | Dissolved |
| NATIONAL HOUSE-BUILDING COUNCIL | 00320784 | 01/06/2011 | 31/05/2020 | Bronze |
| PRUDENTIAL DISTRIBUTION LIMITED | SC212640 | 17/12/2004 | 02/08/2005 | Silver |
| PRUDENTIAL EUROPE ASSURANCE HOLDINGS LIMITED | SC149193 | 27/03/2003 | 13/12/2005 | Dissolved |
| Prudential Assurance Co Ltd | NF000315 | 19/11/2004 | 02/08/2005 | Dissolved |
| RSA INSURANCE GROUP LIMITED | 02339826 | 01/08/2016 | 31/07/2019 | Silver |
| Synesis Pensions Ltd | 05692478 | 03/03/2006 | 08/12/2008 | Dissolved |
| THE PRUDENTIAL ASSURANCE COMPANY LIMITED | 00015454 | 19/11/2004 | 02/08/2005 | Bronze |
| VITALITY HEALTH LIMITED | 05051253 | 11/05/2005 | 07/11/2005 | Silver |