| Officer | M A SOLUTIONS (LINDUM) LTD | 🇬🇧United Kingdom | Active | 11/05/2026 – present |
| Officer | LAKESIDE WATER AND BUILDING SERVICES LIMITED | 🇬🇧United Kingdom | Active | 11/05/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (ARDLEY) LIMITED | — | Active | 02/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER BIOGAS LIMITED | — | Active | 06/04/2026 – present |
| Officer | SEVERN TRENT (W&S) LIMITED | 🇬🇧United Kingdom | Active | 10/03/2026 – present |
| Officer | SEVERN TRENT GREEN POWER LIMITED | 🇬🇧United Kingdom | Active | 06/04/2026 – present |
| Officer | SEVERN TRENT RETAIL AND UTILITY SERVICES LIMITED | 🇬🇧United Kingdom | Active | 27/03/2026 – present |
| Officer | REIGATE ENVIRONMENTAL SERVICES LIMITED | 🇬🇧United Kingdom | Active | 27/03/2026 – present |
| Officer | SEVERN TRENT GREEN POWER GROUP LIMITED | 🇬🇧United Kingdom | Active | 14/05/2026 – present |
| Officer | SEVERN TRENT SERVICES DEFENCE LIMITED | 🇬🇧United Kingdom | Active | 27/03/2026 – present |
| Officer | SEVERN TRENT GREEN POWER COMPOSTING LIMITED | 🇬🇧United Kingdom | Active | 06/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (ANDIGESTION) LIMITED | 🇬🇧United Kingdom | Active | 02/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (BRIDGEND) LIMITED | 🇬🇧United Kingdom | Active | 02/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER CHURCH FARM LIMITED | 🇬🇧United Kingdom | Active | 06/04/2026 – present |
| Officer | ETWALL LAND LIMITED | — | Active | 23/03/2026 – present |
| Officer | SEVERN TRENT SOLAR FINANCE LIMITED | 🇬🇧United Kingdom | Active | 26/05/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (HERTFORDSHIRE) LIMITED | 🇬🇧United Kingdom | Active | 06/04/2026 – present |
| Officer | SEVERN TRENT SERVICES (WATER AND SEWERAGE) LIMITED | 🇬🇧United Kingdom | Active | 06/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (CW) LIMITED | — | Active | 06/04/2026 – present |
| Officer | WATERTIGHT MANAGEMENT LIMITED | 🇬🇧United Kingdom | Active | 23/03/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (CASSINGTON) LIMITED | 🇬🇧United Kingdom | Active | 06/04/2026 – present |
| Officer | MAINS INFRASTRUCTURE CONSTRUCTION LIMITED | 🇬🇧United Kingdom | Active | 23/03/2026 – present |
| Officer | MIDLANDS LAND PORTFOLIO LIMITED | — | Active | 21/05/2026 – present |
| Officer | SEVERN TRENT WIND POWER LIMITED | 🇬🇧United Kingdom | Active | 06/04/2026 – present |
| Officer | INDUSTRIAL WATER JETTING SYSTEMS HOLDINGS LIMITED | — | Active | 23/03/2026 – present |
| Officer | SEVERN TRENT SERVICES INTERNATIONAL (OVERSEAS HOLDINGS) LIMITED | 🇬🇧United Kingdom | Active | 27/03/2026 – present |
| Officer | SEVERN TRENT GREEN POWER ATHERSTONE LIMITED | 🇬🇧United Kingdom | Active | 06/04/2026 – present |
| Officer | SYNERGEN UTILITIES LIMITED | 🇬🇧United Kingdom | Active | 23/03/2026 – present |
| Officer | SEVERN TRENT PROPERTY SOLUTIONS LIMITED | — | Active | 27/03/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (WALLINGFORD) LIMITED | 🇬🇧United Kingdom | Active | 14/05/2026 – present |
| Officer | SEVERN TRENT GREEN POWER LODGE FARM LIMITED | 🇬🇧United Kingdom | Active | 06/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (RBWM) LIMITED | 🇬🇧United Kingdom | Active | 06/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER CAYTON LIMITED | 🇬🇧United Kingdom | Active | 06/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER HOLDINGS LIMITED | 🇬🇧United Kingdom | Active | 06/04/2026 – present |
| Officer | SEVERN TRENT SERVICES OPERATIONS UK LIMITED | 🇬🇧United Kingdom | Active | 02/03/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (WEST LONDON) LIMITED | — | Active | 06/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (NORTH LONDON) LIMITED | 🇬🇧United Kingdom | Active | 14/05/2026 – present |
| Officer | SYNERGEN HOLDINGS LIMITED | 🇬🇧United Kingdom | Active | 23/03/2026 – present |
| Officer | WATERTIGHT MANAGEMENT HOLDINGS LIMITED | 🇬🇧United Kingdom | Active | 23/03/2026 – present |
| Officer | WATERTIGHT HOLDINGS LIMITED | 🇬🇧United Kingdom | Active | 23/03/2026 – present |
| Officer | SEVERN TRENT SERVICES DEFENCE HOLDINGS LIMITED | 🇬🇧United Kingdom | Active | 27/03/2026 – present |
| Officer | HOWLETT ASSOCIATES WATER TREATMENT LIMITED | 🇬🇧United Kingdom | Active | 27/03/2026 – present |
