| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| 9 Holyrood Street Ltd | 03693693 | 27/01/1999 | Dissolved |
| 9 Holyrood Street Ltd | 03693693 | 27/01/1999 | Dissolved |
| C E L - Durand Gardens Ltd | 02391392 | 02/06/1991 | Dissolved |
| Charterhouse Estates Ltd | 02164840 | 05/06/1991 | Dissolved |
| Charterhouse Regeneration Limited | 02730237 | 10/08/1992 | Dissolved |
| DORRINGTON CITY LIMITED | 03848501 | 28/09/1999 | Not Trading |
| ESTREITO LIMITED | 02210786 | 05/06/1991 | Dissolved |
| FRESHSHIRE LIMITED | 01843145 | 09/10/1992 | Bronze |
| Funchal Ltd | 02210910 | 05/07/1991 | Dissolved |
| Great Solutions Ltd | 02575218 | 12/03/1991 | Dissolved |
| LAKE ESTATES LIMITED | 01596485 | 18/12/1992 | Bronze |
| PROMOTE INVESTMENTS LIMITED | 04278832 | 04/09/2001 | Not Trading |
| SOLID SPACE DEVELOPMENTS LIMITED | 04209439 | 01/05/2001 | Dissolved |
| SOLIDSPACE LIMITED | 07119566 | 07/01/2010 | One Red Flag |
| SOLIDSPACE SYSTEM BUILD LIMITED | 12772657 | 28/07/2020 | Bronze |
| UNION STREET LIMITED | 04418120 | 30/09/2002 | Not Trading |
| Zedscape Ltd | 04363852 | 25/02/2002 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ARCHITECTURAL ASSOCIATION (INCORPORATED) | 00171402 | 31/05/1992 | 31/05/1995 | Silver |
| AZ URBAN STUDIO LIMITED | 03072755 | 21/07/1995 | 21/09/2016 | Silver |
| LAKE ESTATES LIMITED | 01596485 | 18/12/1992 | 19/12/2003 | Bronze |
| LAKE PROPERTY & ASSET MANAGEMENT LIMITED | 05710788 | 15/02/2006 | 31/07/2019 | Dissolved |
| ONE CENTAUR STREET MANAGEMENT COMPANY LIMITED | 05074539 | 16/03/2004 | 01/10/2005 | Not Trading |
| One.To.Eight Ltd | 04092327 | 06/10/2000 | 03/11/2004 | Dissolved |
| RIBA 1834 LIMITED | 04604934 | 01/01/2003 | 30/06/2003 | Amber |
| RIBA TRUST LIMITED | 04604923 | 09/10/2007 | 07/09/2011 | Dissolved |
| SOUTHWARK AND SOUTHBANK LIMITED | 06618951 | 13/06/2008 | 30/09/2019 | Dissolved |
| TWICKENHAM RIVERSIDE LIMITED | 03657494 | 28/10/1998 | 18/09/2012 | Dissolved |