| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ARCUS INFRASTRUCTURE PARTNERS LLP | OC343340 | 13/02/2009 | Bronze |
| ARCUS ISH LLP | OC343892 | 10/03/2009 | Gold |
| HORIZON ENERGY INFRASTRUCTURE LIMITED | 06844261 | 13/11/2019 | Silver |
| HORIZON ENERGY VENTURES LIMITED | 12966640 | 01/11/2021 | Amber |
| PROJECT DBW LLP | OC427009 | 18/04/2019 | Silver |
| SALISBURY BIDCO LIMITED | 12234851 | 26/11/2020 | Bronze |
| SALISBURY DEBTCO LIMITED | 12234630 | 26/11/2020 | Bronze |
| SALISBURY MIDCO LIMITED | 12234445 | 26/11/2020 | Silver |
| SALISBURY PARENTCO LIMITED | 12234721 | 26/11/2020 | Silver |
| SALISBURY TOPCO LIMITED | 12234247 | 26/11/2020 | Bronze |
| SMA TOPCO LIMITED | 12859155 | 28/10/2024 | Bronze |
| WORT HILL FORESTRY CO. LIMITED | 06311225 | 12/07/2007 | Not Trading |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| FORTH PORTS FINANCE PLC | 08735464 | 11/11/2013 | 10/10/2018 | Bronze |
| FORTH PORTS LIMITED | SC134741 | 02/06/2011 | 10/10/2018 | Bronze |
| GLOBAL INFRASTRUCTURE INVESTOR ASSOCIATION LIMITED | 09668904 | 03/07/2015 | 02/07/2017 | Gold |
| LONDON CONTAINER TERMINAL (TILBURY) HOLDINGS LIMITED | 07750123 | 23/02/2012 | 19/09/2014 | Not Trading |
| OTTER PORTS I LIMITED | 07549546 | 09/03/2011 | 10/10/2018 | Gold |
| OTTER PORTS II LIMITED | 07549547 | 09/03/2011 | 10/10/2018 | Amber |
| OTTER PORTS LIMITED | 07549545 | 09/03/2011 | 10/10/2018 | One Red Flag |