| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| International Gas Measurement Limited | 02697732 | 19/07/1999 | Dissolved |
| Spectrum Management Services Ltd | 03574867 | 03/06/1998 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CONNECT CONSULTANCY LTD. | 04584367 | 01/10/2005 | 01/12/2014 | Gold |
| E D I Technology Ltd | 01263718 | 01/10/1997 | 31/08/1998 | Dissolved |
| ELSTER (UK) LIMITED | 02514204 | 12/07/1999 | 31/12/2003 | Dissolved |
| GEMALTO TERMINALS LIMITED | 00534821 | 25/01/1994 | 30/01/1997 | Dissolved |
| International Gas Apparatus Ltd | 02112403 | 19/07/1999 | 19/12/2003 | Dissolved |
| MARTLESHAM HEATH HOUSEHOLDERS LIMITED | 01216678 | 19/07/2004 | 10/03/2016 | Silver |
| SANGAMO WESTON LIMITED | 00174133 | 11/04/1994 | 30/01/1997 | Dissolved |
| SECKFORD GOLF CLUB (WOODBRIDGE) LTD | 08908682 | 21/03/2014 | 10/02/2020 | Gold |
| UTILITY ASSOCIATES U.K. LTD. | 05939917 | 20/09/2006 | 01/12/2014 | Gold |