| DIAMOND TRANSMISSION PARTNERS WALNEY EXTENSION (HOLDINGS) LIMITED | UK-10725211 | united kingdom | 75-100% | |
| INFRASTRUCTURE INVESTMENTS OFTO 1 LIMITED | UK-10702561 | united kingdom | 75-100% | |
| DIAMOND TRANSMISSION UK LIMITED | UK-12280960 | united kingdom | 75-100% | |
| DTUK BLK BIDCO HOLDINGS LTD | UK-15848613 | united kingdom | 75-100% | |
| INFRASTRUCTURE INVESTMENTS PPP OFTO LLP | UK-OC441279 | united kingdom | 75-100% | |
| BLACKROCK EVERGREEN INFRASTRUCTURE UK HOLDINGS LIMITED | UK-15133626 | united kingdom | 75-100% | |
| INFRASTRUCTURE INVESTMENTS PPP OFTO MIDCO LLP | UK-OC440903 | united kingdom | 75-100% | |
| BLACKROCK EVERGREEN INFRASTRUCTURE PARTNERS (AGGREGATOR C), SCSP | B270333 | luxembourg | 75-100% | |
| INFRASTRUCTURE INVESTMENTS PPP OFTO HOLDINGS LLP | UK-OC440886 | united kingdom | 75-100% | |
| INFRASTRUCTURE INVESTMENTS (AUSTRALIA) LLP | UK-OC392005 | united kingdom | 75-100% | |
| UK GDN INVESTMENTS TOPCO LIMITED | UK-10412473 | united kingdom | 75-100% | |
| INFRASTRUCTURE INVESTMENTS GENERAL PARTNER LIMITED | UK-05622598 | united kingdom | 75-100% | |
| INFRARED (INFRASTRUCTURE) CAPITAL PARTNERS LIMITED | UK-03917449 | united kingdom | 75-100% | |
| INFRASTRUCTURE INVESTMENTS HOLDINGS LIMITED | UK-06555131 | united kingdom | 75-100% | |
| INFRARED CAPITAL PARTNERS (HOLDCO) LIMITED | UK-07444614 | united kingdom | 75-100% | |
| INFRASTRUCTURE INVESTMENTS GROUP LIMITED | UK-10842189 | united kingdom | 75-100% | |
| INFRARED PARTNERS LLP | UK-OC359657 | united kingdom | 75-100% | |
| INFRARED (UK) HOLDCO 2020 LTD. | UK-12460732 | united kingdom | 75-100% | |
| SUN LIFE FINANCIAL INC. | F380 | canada | 75-100% | |
