| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| FIRST 4 FITTINGS LIMITED | 04427211 | 29/04/2002 | Silver |
| FLOWFLEX ASSOCIATES LIMITED | 00812597 | 31/12/1991 | Silver |
| FLOWFLEX COMPONENTS LIMITED | 00530070 | 03/05/1972 | Silver |
| FLOWFLEX HOLDINGS LIMITED | 02107935 | 09/03/1987 | Bronze |
| FLOWFLEX LIMITED | 06292958 | 26/06/2007 | Silver |
| FLOWFLEX STAMPINGS LIMITED | 01454176 | 31/12/1991 | Silver |
| KINGS LANGLEY ENGINEERING COMPANY LIMITED | 00338964 | 31/12/1991 | Silver |
| Lana D Ltd | 04705222 | 20/03/2003 | Dissolved |
| Pettiform Ltd | 04300715 | 07/11/2001 | Dissolved |
| Premier Group Enterprises (U K) Ltd | 04056931 | 02/04/2001 | Dissolved |
| S T D Trading Ltd | 03546863 | 09/04/1998 | Dissolved |
| SOHO STAMPINGS LIMITED | 01222148 | 31/12/1991 | Silver |
| T. & T. VALVES LIMITED | 01984319 | 31/12/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| FLOWFLEX COMPONENTS LIMITED | 00530070 | 13/05/2005 | 29/09/2005 | Silver |
| FLOWFLEX HOLDINGS LIMITED | 02107935 | 13/05/2005 | 29/09/2005 | Bronze |
| METINET LIMITED | 05599175 | 21/10/2005 | 22/07/2014 | Dissolved |
| METINET LIMITED | 05599175 | 21/10/2005 | 31/08/2014 | Dissolved |
| Plumb Link Ltd | 03510624 | 10/02/1998 | 20/09/2002 | Dissolved |