| Agility Nexus Limited | Other services | 2023 |
| D & D Agility Camps Limited | Other services | 2018 |
| David Munnings Limited | Other services | 2012 |
| Raikes Lane Limited | Construction | 1996 |
| Thameside Energy Recovery Facility Holdco Limited | Other services | 2024 |
| Thameside Energy Recovery Facility Limited | Energy | 2018 |
| Viridor Avonmouth Waste Services Limited | Water & waste | 2020 |
| Viridor CCS Developments Limited | Other services | 2023 |
| Viridor EFW (Runcorn) Limited | Other services | 2009 |
| Viridor Energy (Developments One) Limited | Financial services | 2022 |
| Viridor Energy (Developments Two) Limited | Financial services | 2022 |
| Viridor Energy (Developments) Limited | Other services | 2021 |
| Viridor Energy (Investments One) Limited | Other services | 2021 |
| Viridor Energy (Investments Two) Limited | Other services | 2021 |
| Viridor Energy (Investments) Limited | Other services | 2021 |
| Viridor Energy Ccus Developments Limited | Other services | 2024 |
| Viridor Energy Holding (One) Limited | Other services | 2021 |
| Viridor Energy Holding Limited | Other services | 2021 |
| Viridor Energy Limited | Other services | 2020 |
| Viridor Energy Runcorn Ccus Limited | Other services | 2024 |
| Viridor Energy Tilbury Operations Limited | Other services | 2024 |
| Viridor Exeter Waste Services Limited | Water & waste | 2020 |
| Viridor Limited | Professional & scientific | 1990 |
| Viridor Oxfordshire Limited | Water & waste | 2010 |
| Viridor Peterborough Limited | Water & waste | 2012 |
| Viridor Runcorn CCS Limited | Other services | 2023 |
| Viridor South London Limited | Water & waste | 2012 |
| Viridor Tees Valley Limited | Energy | 2022 |
| Viridor Trident Park Limited | Other services | 2012 |
| Viridor Waste (Greater Manchester) Limited | Other services | 1992 |
| Viridor Waste (HP) Holding Limited | Other services | 2021 |
| Viridor Waste Limited | Administrative & support | 1991 |
| Vtvl Holdco Limited | Other services | 2025 |
| Vtvl Midco Limited | Other services | 2025 |
| Vtvl Topco Limited | Other services | 2025 |