| Officer | HOWLETT ASSOCIATES WATER TREATMENT LIMITED | 🇬🇧Regno Unito | Active | 19/12/2025 – 17/02/2026 |
| Officer | REIGATE ENVIRONMENTAL SERVICES LIMITED | 🇬🇧Regno Unito | Active | 30/03/2026 – 17/02/2026 |
| Officer | SEVERN TRENT RETAIL AND UTILITY SERVICES LIMITED | 🇬🇧Regno Unito | Active | 30/03/2026 – 17/02/2026 |
| Officer | SEVERN TRENT SOLAR FINANCE LIMITED | 🇬🇧Regno Unito | Active | 17/03/2026 – present |
| Officer | SEVERN TRENT SOLAR HOLDINGS LIMITED | 🇬🇧Regno Unito | Active | 18/03/2026 – present |
| Officer | SEVERN TRENT GREEN POWER CAYTON LIMITED | 🇬🇧Regno Unito | Active | 13/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER ATHERSTONE LIMITED | 🇬🇧Regno Unito | Active | 07/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER LODGE FARM LIMITED | 🇬🇧Regno Unito | Active | 07/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (ANDIGESTION) LIMITED | 🇬🇧Regno Unito | Active | 04/04/2026 – 17/02/2026 |
| Officer | SEVERN TRENT PROPERTY SOLUTIONS LIMITED | 🇬🇧Regno Unito | Active | 08/01/2026 – 17/02/2026 |
| Officer | SEVERN TRENT WWIF LIMITED | 🇬🇧Regno Unito | Dissolved | 11/04/2026 – present |
| Officer | EAST WORCESTER WATER LIMITED | 🇬🇧Regno Unito | Active | 22/01/2026 – present |
| Officer | SEVERN TRENT CARSINGTON LIMITED | 🇬🇧Regno Unito | Active | 01/04/2026 – present |
| Officer | SEVERN TRENT METERING SERVICES LIMITED | 🇬🇧Regno Unito | Active | 16/04/2026 – present |
| Officer | SEVERN TRENT SERVICES HOLDINGS LIMITED | 🇬🇧Regno Unito | Active | 01/04/2026 – present |
| Officer | SEVERN TRENT SERVICES INTERNATIONAL LIMITED | 🇬🇧Regno Unito | Active | 01/04/2026 – present |
| Officer | INDUSTRIAL WATER JETTING SYSTEMS HOLDINGS LIMITED | 🇬🇧Regno Unito | Active | 09/01/2026 – 17/02/2026 |
| Officer | SEVERN TRENT SERVICES INTERNATIONAL (OVERSEAS HOLDINGS) LIMITED | 🇬🇧Regno Unito | Active | 30/03/2026 – 17/02/2026 |
| Officer | SEVERN TRENT OVERSEAS HOLDINGS LIMITED | 🇬🇧Regno Unito | Active | 01/04/2026 – present |
| Officer | SEVERN TRENT (W&S) LIMITED | 🇬🇧Regno Unito | Active | 11/03/2026 – 17/02/2026 |
| Officer | SEVERN TRENT SERVICES DEFENCE LIMITED | 🇬🇧Regno Unito | Active | 30/03/2026 – 17/02/2026 |
| Officer | SEVERN TRENT SERVICES DEFENCE HOLDINGS LIMITED | 🇬🇧Regno Unito | Active | 30/03/2026 – 17/02/2026 |
| Officer | SEVERN TRENT SERVICES OPERATIONS UK LIMITED | 🇬🇧Regno Unito | Active | 03/03/2026 – 17/02/2026 |
| Officer | SEVERN TRENT GREEN POWER (CW) LIMITED | 🇬🇧Regno Unito | Active | 08/04/2026 – 17/02/2026 |
| Officer | SEVERN TRENT GREEN POWER (WALLINGFORD) LIMITED | 🇬🇧Regno Unito | Active | 12/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (RBWM) LIMITED | 🇬🇧Regno Unito | Active | 12/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER HOLDINGS LIMITED | 🇬🇧Regno Unito | Active | 12/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (NORTH LONDON) LIMITED | 🇬🇧Regno Unito | Active | 11/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (ARDLEY) LIMITED | 🇬🇧Regno Unito | Active | 04/04/2026 – 17/02/2026 |
| Officer | SEVERN TRENT GREEN POWER BIOGAS LIMITED | 🇬🇧Regno Unito | Active | 08/04/2026 – 17/02/2026 |
| Officer | SEVERN TRENT GREEN POWER GROUP LIMITED | 🇬🇧Regno Unito | Active | 12/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER (BRIDGEND) LIMITED | 🇬🇧Regno Unito | Active | 04/04/2026 – 17/02/2026 |
| Officer | SEVERN TRENT GREEN POWER (CASSINGTON) LIMITED | 🇬🇧Regno Unito | Active | 12/04/2026 – present |
| Officer | SEVERN TRENT GREEN POWER LIMITED | 🇬🇧Regno Unito | Active | 12/04/2026 – present |
| Officer | SEVERN TRENT WIND POWER LIMITED | 🇬🇧Regno Unito | Active | 12/04/2026 – present |
| Officer | ETWALL LAND LIMITED | 🇬🇧Regno Unito | Active | 23/03/2026 – 17/02/2026 |
