| Officer | POWER BALANCING SERVICES LIMITED | 🇬🇧Regno Unito | Active | 06/05/2026 – present |
| Officer | MERCIA POWER RESPONSE (BEELS ROAD) LIMITED | 🇬🇧Regno Unito | Active | 18/03/2026 – present |
| Officer | MERCIA POWER RESPONSE (BRADBERRY BALK LANE BESS) LIMITED | 🇬🇧Regno Unito | Active | 20/03/2026 – present |
| Officer | MERCIA POWER RESPONSE (STATION ROAD) LIMITED | 🇬🇧Regno Unito | Active | 21/03/2026 – present |
| Officer | MERCIA POWER RESPONSE (CARLISLE STREET EAST) LIMITED | 🇬🇧Regno Unito | Active | 23/03/2026 – present |
| Officer | MERCIA POWER RESPONSE (GREYFRIARS WAY) LIMITED | 🇬🇧Regno Unito | Active | 25/03/2026 – present |
| Officer | MERCIA POWER RESPONSE (HULL ROAD) LIMITED | 🇬🇧Regno Unito | Active | 24/03/2026 – present |
| Officer | MERCIA POWER RESPONSE (TRADING) LIMITED | 🇬🇧Regno Unito | Active | 24/03/2026 – present |
| Officer | MERCIA POWER RESPONSE (WORCESTER ROAD) LIMITED | 🇬🇧Regno Unito | Active | 25/03/2026 – present |
| Officer | MERCIA POWER RESPONSE (HIGH STREET) LIMITED | 🇬🇧Regno Unito | Active | 27/03/2026 – present |
| Officer | MERCIA POWER RESPONSE (PETRE STREET) LIMITED | 🇬🇧Regno Unito | Active | 27/03/2026 – present |
| Officer | FRP MERCIA HOLDCO 3 LIMITED | 🇬🇧Regno Unito | Active | 30/03/2026 – present |
| Officer | MERCIA POWER RESPONSE (HIGH VIEW ROAD) LIMITED | 🇬🇧Regno Unito | Active | 31/03/2026 – present |
| Officer | DURHAM RP LIMITED | 🇬🇧Regno Unito | Active | 14/04/2026 – present |
| Officer | RESERVE POWER TRADING LIMITED | 🇬🇧Regno Unito | Active | 05/05/2026 – present |
| Officer | ILKESTON POWER LIMITED | 🇬🇧Regno Unito | Active | 02/05/2026 – present |
| Officer | WESTFIELD SM LIMITED | 🇬🇧Regno Unito | Active | 08/05/2026 – present |
| Officer | EXETER RP LIMITED | 🇬🇧Regno Unito | Active | 01/05/2026 – present |
| Officer | HOLDITCH POWER LIMITED | 🇬🇧Regno Unito | Active | 07/04/2026 – present |
| Officer | FRP MERCIA HOLDCO 2 LIMITED | 🇬🇧Regno Unito | Active | 04/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (HATTON) LIMITED | 🇬🇧Regno Unito | Active | 06/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (MANSFIELD ROAD) LIMITED | 🇬🇧Regno Unito | Active | 07/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (WOOLASTON ROAD) LIMITED | 🇬🇧Regno Unito | Active | 07/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (RIBY STREET) LIMITED | 🇬🇧Regno Unito | Active | 07/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (FORDBRIDGE LANE) LIMITED | 🇬🇧Regno Unito | Active | 07/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (HALLAM WAY) LIMITED | 🇬🇧Regno Unito | Active | 08/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (SOOKHOLME ROAD) LIMITED | 🇬🇧Regno Unito | Active | 08/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (COMMON SIDE LANE) LIMITED | 🇬🇧Regno Unito | Active | 09/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (BRADBERRY BALK LANE) LIMITED | 🇬🇧Regno Unito | Active | 08/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (CARLISLE ROAD) LIMITED | 🇬🇧Regno Unito | Active | 09/04/2026 – present |
| Officer | MERCIA POWER LIMITED | 🇬🇧Regno Unito | Active | 12/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (WELLINGTON ROAD) LIMITED | 🇬🇧Regno Unito | Active | 11/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (GEDDINGTON ROAD) LIMITED | 🇬🇧Regno Unito | Active | 12/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (CUCKOO ROAD) LIMITED | 🇬🇧Regno Unito | Active | 25/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (ASHER LANE 2) LIMITED | 🇬🇧Regno Unito | Active | 26/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (SANDY LANE) LIMITED | 🇬🇧Regno Unito | Active | 25/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (MANNERS AVENUE 2) LIMITED | 🇬🇧Regno Unito | Active | 25/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (NOTTINGHAM ROAD) LIMITED | 🇬🇧Regno Unito | Active | 26/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (WHITTINGTON ROAD) LIMITED | 🇬🇧Regno Unito | Active | 26/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (FULWOOD ROAD) LIMITED | 🇬🇧Regno Unito | Active | 15/04/2026 – present |
| Officer | FRP MERCIA HOLDCO LIMITED | 🇬🇧Regno Unito | Active | 21/04/2026 – present |
| Officer | INNOVATE ENERGY LIMITED | 🇬🇧Regno Unito | Dissolved | 22/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (GRAPHITE WAY) LIMITED | 🇬🇧Regno Unito | Active | 25/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (OUTGANG LANE) LIMITED | 🇬🇧Regno Unito | Active | 25/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (ALBION CLOSE) LIMITED | 🇬🇧Regno Unito | Active | 25/04/2026 – 23/06/2017 |
| Officer | MERCIA POWER RESPONSE (UNION STREET) LIMITED | 🇬🇧Regno Unito | Dissolved | 25/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (THE WOOD YARD) LIMITED | 🇬🇧Regno Unito | Active | 25/04/2026 – 18/07/2017 |
| Officer | MERCIA POWER RESPONSE (KESTREL ROAD) LIMITED | 🇬🇧Regno Unito | Dissolved | 25/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (LUBENHAM ROAD) LIMITED | 🇬🇧Regno Unito | Dissolved | 25/04/2026 – present |
| Officer | MERCIA POWER RESPONSE (PRIVATE ROAD NO.5) LIMITED | 🇬🇧Regno Unito | Active | 26/04/2026 – 23/06/2017 |
