| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ALL HELI PARTS LIMITED | 12919265 | 01/10/2020 | One Red Flag |
| ALL HELI SPARES LIMITED | 12874079 | 11/09/2020 | Silver |
| CASTLE AIR ACADEMY LIMITED | 02668308 | 17/06/2016 | One Red Flag |
| CASTLE AIR AVIATION GROUP LIMITED | 12048297 | 13/06/2019 | Not Trading |
| CASTLE AIR AVIATION PARTS LIMITED | 11102118 | 07/12/2017 | Silver |
| CASTLE AIR GROUP LIMITED | 02774334 | 17/06/2016 | Bronze |
| CASTLE AIR LIMITED | 03188994 | 30/07/2008 | Silver |
| REGAL (SW) LIMITED | 08873526 | 03/02/2014 | Bronze |
| SEVERN AVIATION LIMITED | 09938289 | 06/01/2016 | Silver |
| THE CONCH DOWNDERRY LIMITED | 13915463 | 14/02/2022 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| SOVEREIGN BUSINESS JETS LIMITED | 04806292 | 23/02/2016 | 01/05/2019 | Amber |