| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CONSTANT AIR SYSTEMS LIMITED | 00836280 | 01/04/2004 | Gold |
| INCORPORATED SECRETARIES ASSOCIATION LIMITED | 00326945 | 27/06/2019 | Not Trading |
| MAYFAIR & ST. JAMES'S ASSOCIATION LIMITED | 00493510 | 23/01/2013 | Gold |
| Swan Productions Ltd | 03906931 | 14/01/2000 | Dissolved |
| THE QUALITY ASSURANCE AGENCY FOR HIGHER EDUCATION | 03344784 | 24/01/2018 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| HOME BUILDERS FEDERATION LIMITED | 02764757 | 05/09/2005 | 30/09/2008 | Gold |
| HOUSE BUILDERS FEDERATION LIMITED | 05443042 | 05/09/2005 | 30/09/2008 | Not Trading |
| HOUSE-BUILDERS REPRESENTATIVES LIMITED(THE) | 01951958 | 05/09/2005 | 30/09/2008 | Not Trading |
| IBIS TRADING LIMITED | 06536096 | 23/02/2015 | 31/07/2018 | Bronze |
| KINGSTON UNIVERSITY CAMPUS ENTERPRISES LTD | 02863207 | 04/06/2007 | 11/06/2013 | Dissolved |
| KINGSTON UNIVERSITY SERVICE COMPANY LIMITED | 03134175 | 07/08/2006 | 11/06/2013 | Silver |
| NATIONAL COUNCIL FOR HOUSING AND PLANNING | 00496385 | 17/04/2014 | 20/01/2015 | Amber |
| R.T.P.I. SERVICES LTD. | 02463662 | 21/04/2009 | 28/01/2015 | Gold |
| RTPI SERVICES ITA LIMITED | 05018796 | 02/12/2013 | 20/01/2015 | Not Trading |
| SCOTTISH TOWN PLANNING INSTITUTE | SC145741 | 02/12/2013 | 20/01/2015 | Amber |
| SOUTHWARK DIOCESAN WELCARE | 05275749 | 16/12/2013 | 18/11/2019 | Silver |
| THE QUALITY ASSURANCE AGENCY FOR HIGHER EDUCATION | 03344784 | 24/01/2018 | 23/01/2024 | Silver |
| TRADE MARK OWNERS ASSOC LIMITED | 03734748 | 01/07/2003 | 28/05/2004 | Insolvent |