| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| HEADLAND ARCHAEOLOGY (UK) LIMITED | SC342945 | 12/11/2019 | Amber |
| REMEDX LIMITED | 05044531 | 17/11/2004 | Bronze |
| RSK (IRELAND) LIMITED | 05857689 | 14/01/2020 | Amber |
| RSK BIOCENSUS LIMITED | 04364279 | 05/12/2019 | Amber |
| RSK ENVIRONMENT LIMITED | SC115530 | 01/01/2002 | Silver |
| RSK GROUP LIMITED | 03761340 | 02/11/2005 | Amber |
| RSK GROUP PLC | NF004236 | 11/12/2007 | Dissolved |
| RSK LAND & DEVELOPMENT ENGINEERING LIMITED | 04723837 | 04/04/2003 | Amber |
| RSK RADIOLOGICAL LIMITED | 06367880 | 11/09/2007 | One Red Flag |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| RSK ENVIRONMENT (EASTERN EUROPE) LIMITED | 05056397 | 26/02/2004 | 21/05/2021 | Dissolved |
| RSK REMEDIATION LIMITED | 03522284 | 17/11/2004 | 21/05/2021 | Dissolved |
| RSK RESOURCING LIMITED | 06000032 | 15/11/2006 | 21/05/2021 | Dissolved |
| RSK STATS ENVIRONMENT HEALTH AND SAFETY LIMITED | 04639175 | 16/01/2003 | 21/05/2021 | Not Trading |
| RSK STATS GEOCONSULT LIMITED | 02611785 | 07/12/1999 | 21/05/2021 | Amber |
| RSK STATS LIMITED | 02833839 | 09/01/2016 | 21/05/2021 | Dissolved |
| STRUCTURAL SOILS LIMITED | 00828694 | 30/11/2007 | 02/12/2013 | Bronze |