| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Hylton Construction Ltd | 03126615 | 15/11/1995 | Dissolved |
| Hylton Construction Ltd | 03126615 | 15/11/1995 | Dissolved |
| National Urban Forestry Unit | 03083424 | 09/09/1998 | Dissolved |
| Straeker Construction Ltd | 01463247 | 01/05/1991 | Dissolved |
| The Sterling Partition Co Ltd | 02108938 | 28/08/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ASH COPSE RESIDENTS ASSOCIATION LTD | 07697312 | 07/07/2011 | 25/06/2015 | Silver |
| GROUNDWORK EAST | 01944186 | 10/10/2005 | 05/10/2008 | Silver |
| GROUNDWORK ENVIRONMENTAL MANAGEMENT (HERTFORDSHIRE) LIMITED | 02671048 | 10/10/2005 | 18/08/2008 | Dissolved |
| Groundwork Environmental Services (Thames Valley) Ltd | 02672807 | 01/03/2001 | 17/10/2003 | Dissolved |
| Hertsmere Homeless Project | 03789771 | 29/04/2003 | 31/12/2004 | Dissolved |
| KEECH HOSPICE CARE | 02904446 | 16/03/2011 | 19/12/2013 | Gold |
| REVIVAL (THE LIVING ROOM) COMMUNITY INTEREST COMPANY | 06611733 | 14/07/2016 | 01/12/2017 | Gold |
| Straeker Design & Build Ltd | 02624589 | 27/06/1992 | 23/09/1992 | Dissolved |
| THE GROUNDWORK SOUTH TRUST LIMITED | 01982077 | 01/03/2001 | 17/10/2003 | Amber |
| THE GROUNDWORK SOUTH TRUST LIMITED | 01982077 | 18/10/2002 | 17/10/2003 | Amber |