| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ADAMSON'S LABORATORY SERVICES LIMITED | 01946049 | 17/06/2005 | Dissolved |
| B2BSG SOLUTIONS LTD | 03898148 | 28/09/2012 | Amber |
| CAMERASCAN CCTV LIMITED | 02998690 | 11/12/2015 | Not Trading |
| ENVEX COMPANY LIMITED | 02511138 | 09/01/2007 | Not Trading |
| IN HOUSE THE HYGIENE MANAGEMENT CO. LTD | 02642870 | 30/11/2007 | Not Trading |
| INSPECTION SERVICES (U.K.) LIMITED | 02754875 | 01/10/2008 | Bronze |
| PERSONNEL HEALTH & SAFETY CONSULTANTS (MIDLANDS) LIMITED | 03043403 | 07/04/1995 | Dissolved |
| PERSONNEL HEALTH & SAFETY CONSULTANTS (NORTHERN) LIMITED | 03043389 | 07/04/1995 | Dissolved |
| PERSONNEL HEALTH & SAFETY CONSULTANTS (SOUTHERN) LIMITED | 03043392 | 07/04/1995 | Dissolved |
| PERSONNEL HEALTH & SAFETY CONSULTANTS LIMITED | 02485626 | 20/03/1992 | Gold |
| PHSC PLC | 04121793 | 08/12/2000 | Amber |
| QCS HOLDINGS LIMITED | 04986377 | 31/07/2012 | Dissolved |
| QCS INTERNATIONAL LTD. | SC104627 | 31/07/2012 | Silver |
| RSA ENVIRONMENTAL HEALTH LIMITED | 03293551 | 01/04/2004 | Amber |
| SAFETYMARK CERTIFICATION SERVICES LIMITED | 04119535 | 05/12/2000 | Not Trading |
| SG SYSTEMS (UK) LIMITED | 04682395 | 11/12/2015 | Not Trading |
| THERA TRUST | 03593418 | 13/06/2022 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ENVEX COMPANY LIMITED | 02511138 | 09/01/2007 | 01/12/2008 | Not Trading |
| IN HOUSE THE HYGIENE MANAGEMENT CO. LTD | 02642870 | 30/11/2007 | 01/12/2008 | Not Trading |
| INSPECTION SERVICES (U.K.) LIMITED | 02754875 | 01/10/2008 | 01/12/2008 | Bronze |
| PERSONNEL HEALTH & SAFETY CONSULTANTS LIMITED | 02485626 | 20/03/1992 | 01/12/2008 | Gold |