| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Effective Development Ltd | 02497812 | 01/05/1991 | Dissolved |
| Hallmark Facilities Management Ltd | 02728139 | 11/01/1994 | Dissolved |
| Norden Technical & Consultancy Services Ltd | 01240550 | 30/03/1991 | Dissolved |
| Norden Technical Computer Systems Ltd | 01566521 | 30/03/1991 | Dissolved |
| Tender-On-Line Ltd | 03451540 | 17/10/1997 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BRITISH COUNCIL FOR OFFICES | 02498018 | 17/07/1996 | 14/07/1999 | Gold |
| C E BALL & PARTNERS LIMITED | 01548014 | 30/03/1991 | 01/10/2009 | Dissolved |
| C REALISATIONS LIMITED | 02014305 | 28/07/1997 | 30/06/1998 | Dissolved |
| CAVENDISH BUILDINGS LIMITED | 01966072 | 27/09/1992 | 31/03/2004 | Not Trading |
| CHESTERTON INTERNATIONAL LIMITED | 02485353 | 14/12/1994 | 01/10/1997 | Dissolved |
| COPPER COURT FREEHOLD COMPANY LIMITED | 09814649 | 08/10/2015 | 01/02/2018 | Silver |
| CURRIE & BROWN (TRUSTEES) LIMITED | 04091512 | 26/10/2000 | 01/10/2009 | Dissolved |
| EMPLOYEE OWNERSHIP ASSOCIATION | 01419899 | 22/01/2009 | 30/06/2010 | Silver |
| INFRASTRUCTURE INTERMEDIARIES NO.1 CLASS D LIMITED | 02770329 | 27/11/1992 | 01/10/2009 | Dissolved |
| LEGIBUS 360 LIMITED | 08335215 | 18/12/2012 | 19/08/2013 | Dissolved |
| MCM ARCHITECTURE HOLDINGS LIMITED | 04615895 | 01/12/2009 | 19/10/2011 | Dissolved |
| MCM ARCHITECTURE LTD. | 03473731 | 01/12/2009 | 19/10/2011 | Silver |
| RETAIL EVOLUTION (REVO) | 01755476 | 01/01/1994 | 21/03/2002 | Gold |
| SWEETT & PARTNERS LIMITED | 02770321 | 27/11/1992 | 01/10/2009 | Dissolved |
| SWEETT (UK) LIMITED | 06324201 | 30/08/2007 | 01/10/2009 | Gold |
| SWEETT GROUP LIMITED | 03452251 | 27/10/1997 | 10/09/2010 | Amber |
| SWEETT INTERNATIONAL (HOLDINGS) LIMITED | 06324426 | 30/08/2007 | 01/10/2009 | Amber |
| THE JOINT CONTRACTS TRIBUNAL LIMITED | 03540344 | 16/07/1998 | 20/03/2009 | Gold |