| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| INSUMAT LIMITED | 00880336 | 23/03/2010 | Dissolved |
| NORWICH AERO PRODUCTS LIMITED | 02858312 | 23/03/2010 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DARCHEM ENGINEERING LIMITED | SC144767 | 23/03/2010 | 24/01/2014 | Gold |
| DARCHEM HOLDINGS LIMITED | 03966333 | 23/03/2010 | 24/01/2014 | Silver |
| ESTERLINE ACQUISITION LIMITED | 05720105 | 23/11/2009 | 30/05/2019 | One Red Flag |
| ESTERLINE INTERFACE TECHNOLOGIES LIMITED | 08331349 | 15/08/2015 | 30/05/2019 | Silver |
| ESTERLINE TECHNOLOGIES ACQUISITION LIMITED | 04759585 | 23/11/2009 | 30/05/2019 | Dissolved |
| ESTERLINE TECHNOLOGIES EUROPE LIMITED | 06787209 | 23/11/2009 | 30/05/2019 | Bronze |
| ESTERLINE TECHNOLOGIES GLOBAL LIMITED | 09002080 | 23/04/2014 | 30/05/2019 | Silver |
| ESTERLINE TECHNOLOGIES HOLDINGS LIMITED | 05148070 | 23/11/2009 | 30/05/2019 | Amber |
| ESTERLINE TECHNOLOGIES UNLIMITED | 03837209 | 23/11/2009 | 30/05/2019 | Gold |
| GAMESMAN LIMITED | 03027138 | 15/08/2015 | 30/05/2019 | Bronze |
| LEACH INTERNATIONAL UK LIMITED | 01026277 | 15/08/2015 | 30/05/2019 | Silver |
| PRESSURE SYSTEMS INTERNATIONAL LIMITED | 02858303 | 23/03/2010 | 30/05/2019 | Bronze |
| RACAL ACOUSTICS LIMITED | 05019038 | 15/08/2015 | 30/05/2019 | Gold |
| TA MFG LIMITED | 01979171 | 23/03/2010 | 30/05/2019 | Silver |
| TRANSDIGM MICROWAVE LIMITED | 07649574 | 02/06/2011 | 30/05/2019 | Silver |
| TRAXSYS INPUT PRODUCTS LIMITED | 04436258 | 26/06/2002 | 13/11/2007 | Dissolved |
| WESTON AERO 2003 | 03817397 | 23/03/2010 | 01/05/2014 | Dissolved |
| WESTON AEROSPACE LIMITED | 04740406 | 23/03/2010 | 01/05/2014 | Gold |