| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| UNITED KINGDOM OIL PIPELINES LIMITED | 00746708 | 13/04/2022 | Silver |
| VALERO EQUITY SERVICES LTD | 02203164 | 06/12/2021 | Bronze |
| VALERO LOGISTICS UK LTD | 08589245 | 06/12/2021 | One Red Flag |
| VALERO PEMBROKESHIRE OIL TERMINAL LTD | 03601913 | 06/12/2021 | Silver |
| WALTON-GATWICK PIPELINE COMPANY LIMITED | 01732696 | 13/04/2022 | Silver |
| WEST LONDON PIPELINE AND STORAGE LIMITED | 01918796 | 13/04/2022 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| EXOLUM EASTHAM LTD | 03619979 | 01/10/2003 | 04/10/2010 | Amber |
| EXOLUM GRANGEMOUTH LTD | SC041638 | 01/01/2014 | 26/02/2021 | Amber |
| EXOLUM IMMINGHAM LTD | 00244414 | 01/05/2020 | 26/02/2021 | Gold |
| EXOLUM RIVERSIDE LTD | 03422427 | 01/05/2020 | 26/02/2021 | Bronze |
| EXOLUM SEAL SANDS LTD | 00465548 | 01/05/2020 | 26/02/2021 | Silver |
| EXOLUM STORAGE LTD | 03618750 | 31/12/2013 | 26/02/2021 | Gold |
| EXOLUM TYNESIDE LTD | 01174150 | 01/05/2020 | 26/02/2021 | Bronze |
| OIL STORAGE CONSULTANCY LIMITED | 13500382 | 08/07/2021 | 24/09/2021 | Dissolved |