| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| OAKPOWER MANAGEMENT LIMITED | 05955629 | 09/04/2008 | Dissolved |
| Oakpower Limited | 02071460 | 30/04/1992 | Dissolved |
| Tynfall Flat Management Co Ltd | 01662499 | 27/11/1991 | Dissolved |
| Tynfall Flat Management Co Ltd | 01662499 | 27/11/1991 | Dissolved |
| Wilson Hawkins & Co (Queensbury) Ltd | 04703546 | 19/03/2003 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 16 RUTLAND GATE (FREEHOLD) LIMITED | 03086054 | 01/01/2005 | 01/07/2006 | Bronze |
| 321 PRESTON ROAD MANAGEMENT COMPANY LIMITED | 01275849 | 01/02/2002 | 01/01/2017 | Not Trading |
| 6 ASHWOOD COURT MANAGEMENT COMPANY LIMITED | 02590422 | 07/07/1999 | 17/04/2007 | Silver |
| ASHWOODS RESIDENTS LIMITED | 01927575 | 25/08/2009 | 27/09/2021 | Bronze |
| BLENHEIM ROAD HARROW MANAGEMENT LIMITED | 01971501 | 05/08/2009 | 03/01/2024 | Silver |
| BROOK COURT MANAGEMENT COMPANY LIMITED | 01736184 | 01/01/1996 | 01/12/2000 | Not Trading |
| BROOK COURT MANAGEMENT COMPANY LIMITED | 01736184 | 19/12/1991 | 01/12/2000 | Not Trading |
| CATHERINE PLACE MANAGEMENT COMPANY LIMITED | 04170201 | 10/03/2003 | 06/01/2014 | Not Trading |
| CHESSWOOD COURT (RICKMANSWORTH) RESIDENTS ASSOCIATION LIMITED | 02954697 | 17/11/2003 | 28/07/2014 | Gold |
| DENE COURT (STANMORE) RESIDENTS ASSOCIATION LIMITED | 00641246 | 01/08/2002 | 06/01/2014 | Not Trading |
| EASTBURY PLACE (RESIDENTS ASSOCIATION) LIMITED | 01418018 | 01/01/2007 | 05/08/2016 | Not Trading |
| FARRANS COURT LIMITED | 02023483 | 05/08/2009 | 07/02/2011 | Bronze |
| GAINSBOROUGH ROAD (HAYES) RESIDENTS LIMITED | 02567259 | 01/06/1999 | 31/07/2005 | Gold |
| HALL COURT MANAGEMENT COMPANY LIMITED | 01837049 | 15/06/1992 | 15/02/2005 | Not Trading |
| HALL COURT MANAGEMENT COMPANY LIMITED | 01837049 | 15/02/2005 | 06/01/2014 | Not Trading |
| HARRIET CLOSE RESIDENTS ASSOCIATION LIMITED | 01268356 | 11/08/1992 | 21/06/1996 | One Red Flag |
| HARTON STREET MANAGEMENT LIMITED | 02365722 | 01/06/1999 | 01/08/2012 | Gold |
| MORETYNE COURT MANAGEMENT LIMITED | 02189329 | 01/07/2001 | 06/01/2014 | Not Trading |
| PENPAX FLAT MANAGEMENT COMPANY LIMITED | 01662218 | 31/08/1992 | 30/11/1994 | Dissolved |
| SEVENTY-ONE STANMORE HILL (RESIDENTS) LIMITED | 01756221 | 20/11/2000 | 13/08/2003 | Silver |
| SQUIRES RIDGE MANAGEMENT CO. LIMITED | 02061195 | 25/09/2006 | 31/12/2010 | Gold |
| STERLING COURT MANAGEMENT LIMITED | 02475667 | 22/12/1992 | 10/01/2017 | Silver |
| THE BANNER BUILDING MANAGEMENT COMPANY LIMITED | 03096213 | 05/11/2003 | 02/01/2014 | Not Trading |
| THE BURY MANOR RESIDENTS LIMITED | 03675620 | 01/09/2003 | 18/02/2009 | Gold |
| WALLINGTON COURT MANAGEMENT COMPANY LIMITED | 03712187 | 11/02/1999 | 06/01/2014 | Not Trading |
| WALLINGTON COURT MANAGEMENT COMPANY LIMITED | 03712187 | 01/01/2001 | 06/01/2014 | Not Trading |