| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Bishopsgate Antiques Ltd | 01096135 | 31/12/1990 | Dissolved |
| Bishopsgate Antiques Ltd | 01096135 | 20/02/1991 | Dissolved |
| Cameo Corner Ltd | 00514338 | 20/02/1991 | Dissolved |
| Charterhouse Antiques Ltd | 00380178 | 31/12/1990 | Dissolved |
| Charterhouse Antiques Ltd | 00380178 | 20/02/1991 | Dissolved |
| Ely Place Trading Company Limited | 01613928 | 09/05/1991 | Dissolved |
| Ely Place Trading Company Limited | 01613928 | 09/10/1992 | Dissolved |
| Hennig,I,& Co (Services) Ltd | 02164882 | 09/05/1991 | Dissolved |
| Hennig,I,& Co (Services) Ltd | 02164882 | 09/05/1991 | Dissolved |
| I. Hennig & Co (Jewellery) Limited | 02200232 | 09/05/1991 | Dissolved |
| I. Hennig & Co (Jewellery) Limited | 02200232 | 09/05/1991 | Dissolved |
| Lustig Brothers (London) Ltd | 00939833 | 21/04/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CITY & WEST EAST LIMITED | 00531446 | 17/08/1991 | 24/07/2000 | Dissolved |
| Chichester Diamonds Ltd | 00288687 | 09/05/1991 | 31/03/1998 | Dissolved |
| Chichester Diamonds Ltd | 00288687 | 09/05/1991 | 31/03/1998 | Dissolved |
| Consolidated Gem Co Ltd | 01992054 | 06/07/1991 | 31/03/1998 | Dissolved |
| Consolidated Gem Co Ltd | 01992054 | 06/07/1991 | 31/03/1998 | Dissolved |
| DE BEERS UK LIMITED | 02054170 | 24/05/1991 | 11/09/1994 | Bronze |
| DIAMOND REALISATIONS LIMITED | 00688402 | 09/05/1991 | 31/03/1998 | Gold |
| DIAMOND REALISATIONS LIMITED | 00688402 | 09/05/1991 | 31/03/1998 | Gold |
| HATTRON LIMITED | 00695324 | 09/05/1991 | 31/03/1998 | Bronze |
| I HENNIG & CO LIMITED | 00646001 | 09/05/1991 | 01/08/1991 | Silver |
| I HENNIG & CO LIMITED | 00646001 | 09/05/1991 | 31/03/1998 | Silver |