| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| A.R. ELLIS LIMITED | 01082468 | 28/03/2013 | Dissolved |
| FLOWMAX FLOWMETERS LIMITED | 02664180 | 11/06/2004 | Dissolved |
| FLOWMAX INSTRUMENTATION LIMITED | 02789665 | 10/06/2004 | Dissolved |
| Fluidex Ltd | 02871621 | 15/11/1993 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ACTION-SEALTITE LIMITED | 01610309 | 29/10/1997 | 28/09/2016 | Gold |
| ANGLO-NORDIC BURNER PRODUCTS LIMITED | 01017422 | 12/03/2010 | 11/07/2016 | Bronze |
| BELL FLOW SYSTEMS LIMITED | 03386045 | 30/11/2010 | 13/07/2016 | Gold |
| CASTLE PUMPS LTD | 06307240 | 05/11/2012 | 23/07/2016 | Bronze |
| CORTEX DISPLAYS LTD | 03971569 | 30/11/2010 | 13/07/2016 | Dissolved |
| COULTON INSTRUMENTATION LIMITED | 04179308 | 10/06/2004 | 15/01/2007 | Bronze |
| FLOWMAX LIMITED | 03455056 | 28/10/1998 | 16/05/2018 | Silver |
| INDUSTRIAL FLOW CONTROL LIMITED | 02111157 | 18/01/2002 | 23/06/2016 | One Red Flag |