| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Q.D. PROPERTIES LIMITED | NI040473 | 21/05/2001 | Dissolved |
| RIVERFRONT DEVELOPMENTS LTD | NI037536 | 24/01/2000 | Gold |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ATLANTIC QUAY MANAGEMENT COMPANY LIMITED | NI042687 | 12/03/2002 | 10/02/2005 | Bronze |
| CLIPPER QUAY RIVERFRONT MANAGEMENT COMPANY LIMITED | NI043546 | 24/06/2002 | 10/08/2005 | Bronze |
| COLLEGE VIEW MANAGEMENT COMPANY LIMITED | NI047448 | 07/08/2003 | 10/08/2005 | Bronze |
| DIAMOND CONTAINERS LIMITED | NI022569 | 14/04/1989 | 28/10/2024 | Silver |
| DIAMOND CORRUGATED CASES LIMITED | NI009409 | 30/09/1998 | 28/10/2024 | Gold |
| DIAMOND PACKAGING SYSTEMS LIMITED | NI046372 | 09/06/2003 | 28/10/2024 | Not Trading |
| LONDONDERRY CHAMBER OF COMMERCE (INCORPORATED) | R0000486 | 17/06/2014 | 20/05/2016 | Silver |
| QUAY DEVELOPMENTS LIMITED | NI031285 | 09/10/1999 | 15/06/2005 | Bronze |