| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BOWLING COURT MANAGEMENT LIMITED | 02428096 | 08/05/2008 | Silver |
| CHISWELL MANAGEMENT LIMITED | 08964319 | 13/07/2015 | Amber |
| FIELD GATE HOUSE AND MEWS 2 RTM COMPANY LIMITED | 07151650 | 25/08/2018 | Gold |
| JOSEPH COURT MANAGEMENT COMPANY LIMITED | 05675208 | 01/05/2012 | Amber |
| LICHFIELD PLACE MANAGEMENT COMPANY LIMITED | 02425031 | 25/04/2012 | Silver |
| OVERTREES LIMITED | 04453745 | 01/07/2012 | Silver |
| ST. RAPHAEL'S COURT MANAGEMENT LIMITED | 01899671 | 27/03/2013 | Bronze |
| St.John's Court Management(Harpenden) Ltd | 00922857 | 14/01/2008 | Dissolved |
| WESTMINSTER PLACE MANAGEMENT COMPANY (ST. ALBANS) LIMITED | 01904523 | 17/04/2012 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AKRILL HOUSE LIMITED | 05142329 | 20/04/2007 | 31/03/2013 | Amber |
| APSLEY GRANGE RESIDENTS' COMPANY LIMITED | 03021531 | 05/02/2008 | 01/02/2012 | Silver |
| AVENTINE COURT MANAGEMENT COMPANY LIMITED | 05198064 | 10/06/2009 | 01/01/2019 | Silver |
| BRYANT COURT LIMITED | 05142107 | 20/04/2007 | 31/03/2013 | Amber |
| CASTLE MILL APARTMENTS LIMITED | 05604397 | 23/08/2007 | 01/08/2013 | Amber |
| HERRINGSWELL RESIDENTS CO. LTD. | 05606172 | 01/12/2007 | 16/04/2009 | Silver |
| LOWSTREAM PROPERTY MANAGEMENT LIMITED | 01635800 | 20/04/2007 | 31/03/2013 | Silver |
| MARSHAL'S COURT MANAGEMENT COMPANY LIMITED | 02561833 | 28/05/2009 | 31/08/2017 | Amber |
| MILLERS RISE MANAGEMENT COMPANY LIMITED | 02246747 | 01/04/2007 | 01/04/2013 | Silver |
| MILTON COURT HARPENDEN LIMITED | 00565164 | 08/11/2005 | 30/07/2015 | Silver |
| MURTON COURT MANAGEMENT LIMITED | 01206075 | 01/10/2013 | 31/07/2014 | Amber |
| OAKBANK MANAGEMENT COMPANY LIMITED(THE) | 01303698 | 13/01/2004 | 17/08/2020 | Silver |
| SANDRINGHAM COURT RESIDENTS COMPANY LIMITED | 02271275 | 26/09/2012 | 04/01/2021 | Silver |
| SJC ESTATES LIMITED | 04098059 | 10/03/2008 | 30/11/2009 | Gold |
| STABLE MEWS MANAGEMENT LIMITED | 02745702 | 27/09/2012 | 01/03/2013 | Silver |
| STANDON MILL RESIDENTS COMPANY LIMITED | 05121205 | 01/09/2007 | 17/12/2010 | Silver |
| STAYMIRE FLAT MANAGEMENT COMPANY LIMITED | 01662497 | 21/05/2007 | 12/02/2013 | Gold |
| SUMMERHILL COURT ASSOCIATION (ST. ALBANS) LIMITED | 02328594 | 08/08/2006 | 21/08/2006 | Not Trading |
| THE GALLERIES RESIDENTS (WARLEY) LIMITED | 05358451 | 08/02/2008 | 01/06/2009 | Silver |
| TREVELYAN PLACE MANAGEMENT COMPANY LIMITED | 04349057 | 15/05/2008 | 01/06/2014 | Gold |