| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BARLEY LANE DEVELOPMENTS LIMITED | 05925446 | 05/09/2006 | Dissolved |
| HERTS AND ESSEX FREEHOLDERS LIMITED | 06020267 | 06/12/2006 | Dissolved |
| KNIGHTON HOMES LIMITED | 04177042 | 01/10/2007 | Dissolved |
| KNIGHTON PROPERTY DEVELOPMENTS LIMITED | 05921346 | 31/12/2008 | Dissolved |
| YOUR ESTATE SERVICES LIMITED | 12084543 | 04/07/2019 | Gold |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BEAUMONT HOUSE (COLE GREEN) MANAGEMENT COMPANY LIMITED | 03937738 | 03/03/2003 | 23/05/2011 | One Red Flag |
| CHERITON FLAT MANAGEMENT COMPANY LIMITED | 01294335 | 01/02/2003 | 01/05/2006 | Silver |
| HEYBRIDGE MANAGEMENT LIMITED | 05133090 | 15/09/2006 | 01/09/2009 | Amber |
| LEMSFORD ESTATE MANAGEMENT LIMITED | 01133968 | 08/09/1998 | 06/12/1999 | Bronze |
| LEYGREEN LIMITED | 01435177 | 01/08/2005 | 31/03/2006 | Silver |
| MAPLES MANAGEMENT LIMITED | 02556080 | 01/03/2004 | 01/06/2006 | Silver |
| MILL GREEN (HALSTEAD) MANAGEMENT LIMITED | 06653442 | 22/07/2008 | 01/11/2011 | Amber |
| MY ESTATE MANAGER LTD. | 07799323 | 06/10/2011 | 30/09/2022 | One Red Flag |
| St.John's Court Management(Harpenden) Ltd | 00922857 | 01/01/2003 | 14/01/2008 | Dissolved |
| WHIPPENDELL BLOCK A MANAGEMENT LIMITED | 01920497 | 01/08/2004 | 31/12/2011 | Gold |
| WHIPPENDELL BLOCK B MANAGEMENT LIMITED | 01920498 | 01/08/2004 | 31/12/2011 | Gold |