| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ANDREWS HYDROGRAPHICS (HOLDING COMPANY) LIMITED | 04286939 | 14/02/2025 | Silver |
| ANDREWS HYDROGRAPHICS LIMITED | 01349279 | 14/02/2025 | Bronze |
| BSW LIMITED | SC335302 | 10/01/2025 | Not Trading |
| C & L PROPERTIES (CRATHIE) LIMITED | SC327163 | 10/01/2023 | Amber |
| CASTLECALL LIMITED | SC329479 | 10/01/2023 | Bronze |
| CHAIN LINK LTD | SC592634 | 10/01/2023 | Not Trading |
| FIRST COMPETENCE LIMITED | SC575184 | 16/12/2021 | Silver |
| FIRST CONSTRUCTION LIMITED | SC239596 | 16/12/2021 | Gold |
| FIRST DECOMMISSIONING LIMITED | SC383638 | 10/01/2025 | Not Trading |
| FIRST HYDROCARBONS LIMITED | SC540906 | 10/01/2023 | Not Trading |
| FIRST MARINE PRODUCTS LTD | SC821196 | 30/08/2024 | Amber |
| FIRST MARINE SOLUTIONS LIMITED | SC346015 | 16/12/2021 | Gold |
| FIRST OIL INVESTMENTS | SC649291 | 23/02/2024 | One Red Flag |
| FIRST OIL NNS (HOLDINGS) LIMITED | 09769710 | 09/09/2015 | Dissolved |
| FIRST OIL NNS LIMITED | 09769662 | 09/09/2015 | Dissolved |
| FIRST OIL PLC | SC191745 | 01/05/2014 | Dissolved |
| FIRST SCOT LIMITED | SC239234 | 10/01/2023 | Amber |
| FIRST SUBSEA LIMITED | 02894198 | 16/12/2021 | Gold |
| FIRST TECH LIMITED | SC282302 | 28/10/2020 | Gold |
| FIRST TIME LIMITED | SC337543 | 16/12/2021 | Amber |
| FOURLET (CRATHIE) LIMITED | SC330461 | 10/01/2023 | Gold |
| FOURLET (SAUFC) LIMITED | SC337548 | 10/01/2023 | Gold |
| FOURLET (THE GRANGE) LIMITED | SC330458 | 10/01/2023 | Gold |
| FOURLET LIMITED | SC110638 | 10/01/2023 | Amber |
| FOURLET PROSPECTS LIMITED | SC337545 | 10/01/2023 | Gold |
| INTER CITY (ABERDEEN) LIMITED | SC149122 | 10/01/2023 | Gold |
| MOORING SYSTEMS LIMITED | SC251291 | 16/12/2021 | Gold |
| NORTH SEA COMPACTORS LIMITED | SC085208 | 08/03/2023 | Gold |
| PARKLEA HOLDINGS LIMITED | SC651098 | 16/12/2021 | Bronze |
| PROP CO 1 LIMITED | SC649831 | 10/01/2025 | Not Trading |
| TRIPOS LIMITED | SC141787 | 10/01/2025 | Amber |
| TUSK LIFTING LTD | 10497383 | 12/07/2024 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| FIRST OIL EXPRO LIMITED | 01021486 | 01/05/2014 | 31/05/2016 | Dissolved |
| NEO ENERGY (ZNI) LIMITED | NI029409 | 01/05/2014 | 04/03/2016 | Silver |
| NEO ENERGY CENTRAL NORTH SEA LIMITED | 05894683 | 01/05/2014 | 04/03/2016 | Silver |