| Archus Bidco Limited | Extraterritorial | 2023 |
| Archus Holdco Limited | Extraterritorial | 2023 |
| Archus Insights Limited | Extraterritorial | 2023 |
| Archus the Future of Healthcare Limited | Extraterritorial | 2023 |
| Archus the Healthcare Infrastructure Specialist Limited | Extraterritorial | 2023 |
| Bonnet Ltd | Information & communication | 2019 |
| Development Initiatives Poverty Research Limited | Administrative & support | 2007 |
| Elevation Building Consultancy Ltd | Professional & scientific | 2020 |
| Energy Transition Finance Ltd | Wholesale & retail | 2017 |
| Energy Transition Group Ltd | Wholesale & retail | 2014 |
| Energy Transition Holdings Ltd | Professional & scientific | 2022 |
| Jomson Holdings Limited | Financial services | 2025 |
| JPA Automotive Limited | Wholesale & retail | 2019 |
| Livediligence Limited | Information & communication | 2021 |
| Newicon Ltd | Information & communication | 2006 |
| OVO (S) Electricity Limited | Energy | 2000 |
| OVO (S) Energy Services Limited | Energy | 2017 |
| OVO Brand Ltd | Professional & scientific | 2009 |
| OVO Electricity Ltd | Wholesale & retail | 2009 |
| OVO Energy Ltd | Wholesale & retail | 2009 |
| OVO Field Force Ltd | Information & communication | 2013 |
| OVO GAS Ltd | Wholesale & retail | 2008 |
| OVO Group Ltd | Wholesale & retail | 2017 |
| OVO Solar and Heating Ltd | Energy | 1992 |
| Pcml Ltd | Professional & scientific | 2008 |
| Stonehenge Clothing Ltd | Wholesale & retail | 2026 |
| THE OVO Charitable Foundation | Administrative & support | 2014 |