| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABP ACQUISITIONS UK LIMITED | 05839361 | 25/01/2012 | 30/11/2017 | Amber |
| ABP BONDS UK LIMITED | 05885161 | 25/01/2012 | 30/11/2017 | Gold |
| ABP FINANCE PLC | 07847174 | 25/01/2012 | 30/11/2017 | Silver |
| ABP MEZZANINE HOLDCO UK LIMITED | 05920216 | 25/01/2012 | 30/11/2017 | Amber |
| ABP SUBHOLDINGS UK LIMITED | 05839376 | 25/01/2012 | 30/11/2017 | Bronze |
| ABPA HOLDINGS LIMITED | 07847153 | 25/01/2012 | 30/11/2017 | Amber |
| ASSOCIATED BRITISH PORTS HOLDINGS LIMITED | 01612178 | 25/01/2012 | 30/11/2017 | Gold |
| HELIX ACQUISITION LIMITED | 07428859 | 16/02/2012 | 15/06/2016 | Amber |
| HELIX BUFFERCO LIMITED | 07428829 | 16/02/2012 | 15/06/2016 | Silver |
| HELIX MIDCO LIMITED | 07428762 | 16/02/2012 | 15/06/2016 | Silver |
| OMERS INFRASTRUCTURE EUROPE LIMITED | 07560225 | 06/04/2011 | 29/10/2014 | Silver |
| SCOTIA GAS NETWORKS LIMITED | 04958135 | 27/03/2012 | 01/07/2020 | Bronze |
| SCOTLAND GAS NETWORKS PLC | SC264065 | 27/03/2012 | 01/07/2020 | Silver |
| SGN COMMERCIAL SERVICES LIMITED | 05969465 | 27/03/2012 | 01/07/2020 | Gold |
| SGN CONNECTIONS LIMITED | 05618886 | 27/03/2012 | 01/07/2020 | Amber |
| SGN CONTRACTING LIMITED | 05372264 | 27/03/2012 | 01/07/2020 | Amber |
| SGN EVOLVE NETWORK LTD | 08822715 | 20/11/2014 | 01/07/2020 | Amber |
| SGN LESSONA LIMITED | 11727758 | 14/12/2018 | 01/07/2020 | Amber |
| SGN MIDCO LIMITED | 11050000 | 06/11/2017 | 01/07/2020 | Bronze |
| SGN PLACE LIMITED | 11245555 | 09/03/2018 | 01/07/2020 | Amber |
| SGN PLEDGECO LIMITED | 11049371 | 06/11/2017 | 01/07/2020 | Gold |
| SGN SMART LIMITED | 05618883 | 27/03/2012 | 01/07/2020 | Gold |
| SOUTHERN GAS NETWORKS PLC | 05167021 | 27/03/2012 | 01/07/2020 | Bronze |