| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CRITICAL SYSTEMS LTD | 06951100 | 03/07/2009 | Silver |
| Tanshire Trustees Ltd | 03108141 | 15/12/1995 | Dissolved |
| Walsh Tan Ltd | 03179646 | 25/03/1996 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CONTAMINATION CONTROL NETWORK LTD. | 13035791 | 20/11/2020 | 29/11/2021 | Gold |
| ELSTEAD PROPERTIES LIMITED | 01683272 | 31/12/1991 | 20/07/1998 | Dissolved |
| PHARMACEUTICAL ENGINEERING AND DESIGN | 01159740 | 31/12/1991 | 10/06/1994 | Dissolved |
| TANSHIRE HOLDINGS LIMITED | 02769118 | 30/11/1992 | 22/12/2015 | Bronze |
| TANSHIRE LIMITED | 02769185 | 03/12/1992 | 20/07/1998 | Dissolved |
| TOTAL PROCESS CONTAINMENT LIMITED | 02722064 | 29/09/1992 | 18/11/1997 | Dissolved |
| W T Integrated Systems | 02862418 | 24/11/1993 | 20/07/1998 | Dissolved |