| ALBION HEALTHCARE (DONCASTER) HOLDINGS LIMITED | UK-04495523 | united kingdom | 75-100% | |
| INFRASTRUCTURE INVESTMENTS (PORTAL) GP LIMITED | UK-04170097 | united kingdom | 75-100% | |
| SEMPERIAN HEALTH PROJECTS LIMITED | UK-03290470 | united kingdom | 75-100% | |
| INFRASTRUCTURE INVESTMENTS HOLDINGS LIMITED | UK-06555131 | united kingdom | 75-100% | |
| SEMPERIAN HEALTH SERVICES LIMITED | UK-06400891 | united kingdom | 75-100% | |
| INFRASTRUCTURE INVESTMENTS GROUP LIMITED | UK-10842189 | united kingdom | 75-100% | |
| SEMPERIAN PPP INVESTMENT PARTNERS NO.2 LIMITED | UK-06250753 | united kingdom | 75-100% | |
| INFRASTRUCTURE INVESTMENTS GENERAL PARTNER LIMITED | UK-05622598 | united kingdom | 75-100% | |
| SEMPERIAN PPP INVESTMENT PARTNERS LIMITED | UK-06335776 | united kingdom | 75-100% | |
| INFRARED (INFRASTRUCTURE) CAPITAL PARTNERS LIMITED | UK-03917449 | united kingdom | 75-100% | |
| SEMPERIAN PPP INVESTMENT PARTNERS GROUP LIMITED | UK-07009647 | united kingdom | 75-100% | |
| INFRARED CAPITAL PARTNERS (HOLDCO) LIMITED | UK-07444614 | 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% | |
