| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Aluminium Brass & Diecasting Foundry Ltd | 00258947 | 20/12/1990 | Dissolved |
| Aluminium Brass & Diecasting Foundry Ltd | 00258947 | 20/12/1990 | Dissolved |
| Costa Brava Management Ltd | 01552670 | 28/12/1990 | Dissolved |
| Countrywear Ex-Port Ltd | 03020125 | 20/12/1996 | Dissolved |
| Export Engineering & General Finance Company Limited | 00695148 | 28/12/1990 | Dissolved |
| MELWOOD FINANCIAL MANAGEMENT LIMITED | 02564868 | 03/12/1991 | Amber |
| MELWOODS (WELWYN) LIMITED | 03405529 | 22/08/1997 | Dissolved |
| Melina Developments Ltd | 00725903 | 28/12/1990 | Dissolved |
| Melina Estates Ltd | 00276908 | 28/12/1990 | Dissolved |
| Melina Holdings Ltd | 00879301 | 28/12/1990 | Dissolved |
| Tower Print & Design Ltd. | 02937158 | 09/06/1994 | Dissolved |
| Welwyn Hatfield Business Initiative Ltd | 02892017 | 15/10/2002 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Atlantech Medical Ltd | 03288504 | 06/01/1997 | 15/04/1997 | Dissolved |
| BENTLEY'S THE COLLECTION LIMITED | 07925327 | 26/01/2012 | 26/01/2012 | Silver |
| BENTLEYS ENTERTAINMENTS LIMITED | 02004876 | 06/12/1990 | 01/07/2013 | Gold |
| COMPANY ADVISORY SERVICES LTD | 03289065 | 12/12/1996 | 30/11/2000 | Silver |
| Countrywear by Lewis R Lillie Ltd | 02886038 | 20/12/1996 | 02/06/1997 | Dissolved |
| DERDENCO LIMITED | 01415236 | 20/06/2007 | 30/09/2011 | Dissolved |
| Herts Mobility Centres Ltd | 02670975 | 08/07/1994 | 01/04/1997 | Dissolved |
| MELINA GROUP LIMITED | 00728643 | 28/12/1990 | 23/11/2017 | Gold |
| PLAS DINAS PROPERTIES LIMITED | 00751993 | 28/12/1990 | 01/12/2018 | Bronze |
| PLAS DINAS PROPERTIES LIMITED | 00751993 | 28/12/1990 | 18/01/1995 | Bronze |
| Where There's Muck There's Brass Ltd | 02544621 | 13/11/1994 | 20/07/1999 | Dissolved |
| YOUNGKIRK LIMITED | 03007758 | 17/01/1995 | 24/11/2017 | Silver |