| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AMCO ENGINEERING LIMITED | 06702157 | 24/07/2019 | Dissolved |
| AMCO RAIL ENGINEERING LIMITED | 01214390 | 24/07/2019 | Dissolved |
| AMCO RAIL LIMITED | 02885603 | 24/07/2019 | Dissolved |
| AMF CONSULTING LIMITED | 09806937 | 03/10/2015 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AMALGAMATED CONSTRUCTION (SCOTLAND) LIMITED | SC485741 | 24/07/2019 | 31/12/2023 | Dissolved |
| AMALGAMATED CONSTRUCTION LTD | 00995892 | 24/07/2019 | 31/12/2023 | Bronze |
| AMCO GIFFEN LIMITED | 06547087 | 24/07/2019 | 31/12/2023 | Not Trading |
| AMCO GROUP HOLDINGS LIMITED | 06756943 | 24/07/2019 | 31/12/2023 | Gold |
| AMCO GROUP LIMITED | 06476276 | 24/07/2019 | 31/12/2023 | Gold |
| GIFFEN GROUP LIMITED | 00252314 | 22/08/2019 | 31/12/2023 | Bronze |
| ISG CONSTRUCTION HOLDINGS LIMITED | 07272660 | 01/07/2010 | 17/07/2015 | One Red Flag |
| ISG CONSTRUCTION LIMITED | 00450103 | 06/10/2003 | 17/07/2015 | Pre-I |
| ISG JACKSON LIMITED | 00767259 | 01/07/2010 | 17/07/2015 | Pre-I |
| ISG JACKSON SPECIAL PROJECTS LIMITED | 00541763 | 17/09/2013 | 17/07/2015 | Not Trading |
| ISG SOUTH LIMITED | 07276092 | 01/07/2010 | 17/07/2015 | One Red Flag |
| ISG WESTERN LIMITED | 09069850 | 05/06/2014 | 17/07/2015 | Dissolved |
| LEXIA SOLUTIONS GROUP LIMITED | 05035069 | 29/06/2016 | 07/06/2019 | Gold |
| RHODAR DEMOLITION LIMITED | 04223987 | 29/06/2018 | 07/06/2019 | One Red Flag |
| RHODAR GROUP LIMITED | 11436131 | 27/06/2018 | 07/06/2019 | Not Trading |
| RHODAR INDUSTRIAL SERVICES LIMITED | 06426331 | 13/06/2017 | 07/06/2019 | Gold |
| RHODAR LIMITED | 01269463 | 26/06/2018 | 07/06/2019 | Bronze |
| THERMAC (HIRE) LIMITED | 01929517 | 29/06/2018 | 07/06/2019 | Amber |