| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Gilbert Logan & Sons Ltd | NI011240 | 31/03/1976 | Dissolved |
| Gilbert Logan & Sons Ltd | NI011240 | 31/03/1976 | Dissolved |
| Glenthorpe Trading Ltd | NI041098 | 03/08/2001 | Dissolved |
| McCoo,Ronnie,Travel Ltd | NI011783 | 03/02/1977 | Dissolved |
| Tank Solutions Ltd | NI041423 | 07/09/2001 | Dissolved |
| Watchman Services Ltd | NI030374 | 25/01/1996 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ATLAS TANKS LTD | NI040526 | 24/11/2005 | 17/10/2007 | Dissolved |
| ATLAS TANKS LTD | NI040526 | 24/11/2005 | 17/10/2007 | Dissolved |
| DEVON AND SOMERSET ENGINEERING COMPANY LIMITED | 01844814 | 10/07/2007 | 17/10/2007 | Dissolved |
| DEVON AND SOMERSET ENGINEERING COMPANY LIMITED | 01844814 | 10/07/2007 | 17/10/2007 | Dissolved |
| DUNBARTON PROPERTIES (CO. DOWN) LIMITED | NI038397 | 18/04/2000 | 10/10/2013 | Gold |
| INISHOWEN VIEW MANAGEMENT LIMITED | NI629509 | 30/01/2016 | 17/03/2018 | Not Trading |
| NOTTARB LIMITED | 02654204 | 10/07/2007 | 17/10/2007 | Dissolved |
| NOTTARB LIMITED | 02654204 | 10/07/2007 | 17/10/2007 | Dissolved |
| ORCHARD COUNTY INVESTMENTS LTD | NI033823 | 13/03/1998 | 08/06/2022 | Bronze |
| ORCHARD COUNTY INVESTMENTS LTD | NI033823 | 13/03/1998 | 08/06/2022 | Bronze |
| SENSOR SYSTEMS WATCHMAN | NI020631 | 26/06/1987 | 29/06/2006 | Dissolved |
| SENTEL INDEPENDENT LIMITED | NI032991 | 25/09/1997 | 20/12/2005 | Bronze |
| Sensor Services Ltd | NI039266 | 25/09/2000 | 29/06/2006 | Dissolved |
| Sensor Systems (Signalman) Ltd | NI031744 | 09/12/1996 | 29/06/2006 | Dissolved |