| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AVIONICS MOBILE SERVICES LIMITED | 01193196 | 01/11/2007 | Dissolved |
| Solartron Instruments (1994) Ltd | 02853856 | 26/09/2005 | Dissolved |
| Solartron Metrology (1994) Ltd | 02853875 | 26/09/2005 | Dissolved |
| TH ACQUISITION COMPANY LIMITED | 05150762 | 14/06/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AEM LIMITED | 00620201 | 01/11/2007 | 11/01/2017 | Amber |
| AEROMEDIC INNOVATIONS LIMITED | 02239243 | 01/11/2007 | 15/08/2012 | Dissolved |
| AIRCONTROL TECHNOLOGIES LIMITED | 00499991 | 14/11/2003 | 15/08/2012 | Dissolved |
| AIRSCREW LIMITED | 01146014 | 14/11/2003 | 15/08/2012 | Dissolved |
| AIRTECHNOLOGY HOLDINGS LIMITED | 03817391 | 14/11/2003 | 15/08/2012 | Dissolved |
| AIRTECHNOLOGY PENSION TRUSTEES LIMITED | 03928166 | 11/12/2003 | 11/01/2017 | Not Trading |
| AMETEK (GB) LIMITED | 02569386 | 14/11/2003 | 11/01/2017 | Silver |
| AMETEK AIRTECHNOLOGY GROUP LIMITED | 00499805 | 14/11/2003 | 11/01/2017 | Silver |
| AMETEK HOLDINGS (UK) LIMITED | 03319807 | 14/11/2003 | 15/08/2012 | Dissolved |
| AMETEK HOLDINGS (UK) LIMITED | 03319807 | 22/07/2009 | 15/08/2012 | Dissolved |
| AMETEK PRECISION INSTRUMENTS (UK) LTD. | 00684869 | 04/10/2007 | 05/02/2016 | Dissolved |
| AMETEK RUSSIA (UK) LIMITED | 06815390 | 08/04/2009 | 11/01/2017 | Dissolved |
| AMETEK SCP (BARROW) LIMITED | 05635616 | 17/04/2007 | 11/01/2017 | Gold |
| AVIATION WINDINGS LIMITED | 05394513 | 01/11/2007 | 15/08/2012 | Dissolved |
| CAMECA U.K. LIMITED | 02189319 | 16/08/2007 | 01/05/2014 | Dissolved |
| EMA HOLDINGS UK LIMITED | 04600860 | 14/11/2003 | 11/01/2017 | Dissolved |
| LAND INSTRUMENTS INTERNATIONAL LIMITED | 01659383 | 15/06/2006 | 11/01/2017 | Gold |
| MUIRHEAD AEROSPACE LIMITED | 00560015 | 03/11/2008 | 11/01/2017 | Silver |
| NORCROFT DYNAMICS LIMITED | 01412224 | 03/11/2008 | 15/08/2012 | Dissolved |
| SOLARTRON INSTRUMENTS LIMITED | 02858371 | 26/09/2005 | 15/08/2012 | Dissolved |
| SOLARTRON METROLOGY 2001 LIMITED | 02858374 | 26/09/2005 | 15/08/2012 | Dissolved |
| SOLARTRON METROLOGY LIMITED | 04220056 | 26/09/2005 | 11/01/2017 | Silver |
| SPECTRO ANALYTICAL UK LIMITED | 01766726 | 03/10/2007 | 05/02/2016 | Dissolved |
| TAYLOR HOBSON HOLDINGS LIMITED | 03230257 | 18/06/2004 | 04/01/2013 | Dissolved |
| TAYLOR HOBSON LIMITED | 03230332 | 18/06/2004 | 11/01/2017 | Silver |
| TAYLOR HOBSON OVERSEAS LIMITED | 03230303 | 18/06/2004 | 04/01/2013 | Dissolved |
| TAYLOR HOBSON TRUSTEES LIMITED | 03261156 | 04/10/2007 | 11/01/2017 | Not Trading |
| VISION RESEARCH LIMITED | 06048891 | 25/07/2008 | 05/02/2016 | Dissolved |