| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CHRYSALIS COATED STEEL LIMITED | 09824836 | 14/10/2015 | Dissolved |
| FIRTH PROFILES IP LIMITED | 12353797 | 09/12/2019 | Silver |
| FIRTH STEELS LIMITED | 01715793 | 18/05/2011 | Gold |
| NDS SITE INSTALLATION SERVICES LTD | 12305308 | 28/10/2024 | Not Trading |
| SMD CONSTRUCTION GROUP LTD | 08807649 | 28/10/2024 | Bronze |
| SMD STOCKYARDS LIMITED | 08324990 | 10/12/2012 | Silver |
| STRUCTURAL METAL DECKS LIMITED | 03560591 | 28/10/2024 | Bronze |
| TENNANT INVESTMENTS LIMITED | 05117076 | 30/11/2005 | Silver |
| THRU DECK SERVICES LIMITED | SC255771 | 28/10/2024 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CONSTRUC TRAINING LIMITED | 09172707 | 12/08/2014 | 01/12/2015 | Not Trading |
| SMD ASIA LLP | OC346082 | 31/07/2015 | 16/02/2023 | Bronze |