| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| COULTON CONSTRUCTION SERVICES LIMITED LTD | 08325665 | 11/12/2012 | Dissolved |
| COULTON ENTERPRISES LTD | 12515649 | 12/03/2020 | Silver |
| DOPPSTADT WATER SEPARATION SYSTEMS LIMITED | 09712023 | 31/07/2015 | Dissolved |
| DWR ENGINEERING LIMITED | 13802095 | 10/02/2023 | Gold |
| MATERIALS RECOVERY SYSTEMS LTD | 12434582 | 30/01/2020 | Not Trading |
| OILBUSTER LIMITED | 06558716 | 08/04/2008 | Dissolved |
| R & R SITE SERVICES LIMITED | 04921840 | 02/02/2024 | Silver |
| SAND SEPARATION SYSTEMS LIMITED | 10625418 | 17/02/2017 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| MCG CONSULTANCY SERVICES LIMITED | 04386292 | 04/03/2002 | 26/01/2018 | Not Trading |
| SILTBUSTER PROCESS SOLUTIONS LIMITED | 04014589 | 14/06/2000 | 13/08/2019 | Not Trading |