| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Pre-And Post-Harvest Research & Development Ltd | 01492052 | 15/06/1992 | Dissolved |
| Semper Agrotrade Ltd | 02381002 | 31/12/1990 | Dissolved |
| Semper Bio-Technology Ltd | 01717632 | 31/12/1990 | Dissolved |
| Semper Research and Development Limited | 02433958 | 31/12/1990 | Dissolved |
| Sempernova Plc | 01790124 | 01/01/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| C.W.A. Consultants Ltd | 01491586 | 31/07/1992 | 01/06/2000 | Dissolved |
| CWA INTERNATIONAL CONSULTANCY LTD | 03852311 | 01/06/2000 | 09/03/2021 | Dissolved |
| CWA INTERNATIONAL LTD | 06446306 | 06/12/2007 | 12/09/2020 | Bronze |
| IMRIE CONSULTING LIMITED | 03997598 | 16/05/2000 | 05/03/2020 | Dissolved |
| PARAGON PHILATELICS LIMITED | 02614478 | 01/07/1993 | 09/11/1999 | Dissolved |
| SOCIETY OF EXPERT WITNESSES | 03202568 | 22/05/1996 | 22/05/2014 | Dissolved |