| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Antur Menai | 02779204 | 02/03/1993 | Dissolved |
| BLACK ENVIRONMENT NETWORK | 03063864 | 03/06/2002 | One Red Flag |
| LITENEXT LIMITED | 01506044 | 20/03/1996 | Dissolved |
| Protec Safety Ltd | 03753783 | 15/03/2002 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AGORED CYMRU | 05133651 | 11/07/2008 | 28/11/2011 | Gold |
| AGORED CYMRU | 05133651 | 25/11/2009 | 30/05/2013 | Gold |
| CAM 2000 LIMITED | 03152531 | 22/03/1996 | 01/06/2012 | Gold |
| CAM 2000 LIMITED | 03152531 | 22/03/1996 | 01/06/2012 | Gold |
| COFNOD - NORTH WALES ENVIRONMENTAL INFORMATION SERVICE LIMITED | 05586906 | 01/02/2007 | 23/10/2012 | Gold |
| D. M. M. ENGINEERING LIMITED | 01681756 | 30/04/1991 | 01/09/2016 | Silver |
| D. M. M. ENGINEERING LIMITED | 01681756 | 30/04/1991 | 01/09/2016 | Silver |
| DMM INTERNATIONAL LIMITED | 02040257 | 30/04/1991 | 01/09/2016 | One Red Flag |
| EXCALIBUR (WALES) LIMITED | 03110401 | 16/10/1995 | 01/09/2016 | Silver |
| EXCALIBUR (WALES) LIMITED | 03110401 | 16/10/1995 | 01/09/2016 | Silver |
| LITENEXT LIMITED | 01506044 | 20/03/1996 | 23/03/2005 | Dissolved |
| OBERALP UK LIMITED | 03151610 | 22/03/1996 | 01/06/2012 | Amber |
| OBERALP UK LIMITED | 03151610 | 22/03/1996 | 01/06/2012 | Amber |
| RED CHILI INTERNATIONAL LIMITED | 03819052 | 04/01/2000 | 01/06/2012 | Dissolved |
| RED CHILI INTERNATIONAL LIMITED | 03819052 | 04/01/2000 | 01/06/2012 | Dissolved |
| STONE MONKEY LIMITED | 03102943 | 29/09/1995 | 02/03/2011 | Dissolved |
| STONE MONKEY LIMITED | 03102943 | 29/09/1995 | 02/03/2011 | Dissolved |
| Targed Enterprise Services Limited | 02625472 | 28/05/1992 | 09/02/1995 | Dissolved |
| The Bangor & District Buildings & Amenity Preservation Trust | 03289877 | 10/12/1996 | 17/02/1997 | Dissolved |
| Y FAENOL CYF | 03591856 | 01/01/2000 | 01/07/2018 | Dissolved |
| Ymddiriedolaeth Treftadaeth Caernarfon | 03036512 | 17/03/1995 | 11/01/2007 | Dissolved |