| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BECKTECH INTERNATIONAL LIMITED | 02484634 | 23/03/1992 | Dissolved |
| Hydrologic Environmental Ltd | 03642990 | 02/10/1998 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| A. K. MULLER (UK) LIMITED | 02802161 | 22/03/1993 | 28/02/2007 | Gold |
| AUTOMATIC VENDING ASSOCIATION | 02954612 | 18/05/1995 | 13/05/1999 | Gold |
| BECKTECH LIMITED | 01942052 | 27/08/1992 | 22/06/2010 | Silver |
| Cointech Ltd | 02531194 | 15/08/1992 | 24/06/1999 | Dissolved |
| ION WATER PRODUCTS LTD | 02701863 | 30/03/1992 | 15/10/2011 | Silver |
| SEA ROAD (RUSTINGTON) MANAGEMENT LIMITED | 03217051 | 13/09/2001 | 19/10/2004 | Bronze |
| UNITED KINGDOM WATER TREATMENT ASSOCIATION LIMITED | 05761021 | 15/01/2007 | 12/03/2008 | One Red Flag |
| VMC (UK) LIMITED | 02631692 | 23/07/1992 | 21/06/2000 | Silver |