| AMALGAMATED SMART METERING LIMITEDopenregistry-gb-09299892 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 8,746,013 | 100.00% | 100.00% | 100.00% | 2025-11-04 |
| WESTFIELD SM LIMITEDopenregistry-gb-09305317 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 8,746,012 | 100.00% | 100.00% | 100.00% | 2026-01-06 |
| RESERVE POWER TRADING LIMITEDopenregistry-gb-09548349 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 6,328,917 | 100.00% | 100.00% | 100.00% | 2026-04-05 |
| ILKESTON POWER LIMITEDopenregistry-gb-09806343 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 8,746,012 | 100.00% | 100.00% | 100.00% | 2025-10-02 |
| EXETER RP LIMITEDopenregistry-gb-09874992 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 5,610,383 | 100.00% | 100.00% | 100.00% | 2025-11-04 |
| MERCIA POWER RESPONSE (PRIVATE ROAD NO.5) LIMITEDopenregistry-gb-10217008 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2025-06-01 |
| MERCIA POWER RESPONSE (CHESTERFIELD ROAD) LIMITEDopenregistry-gb-10217080 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2026-06-01 |
| MERCIA POWER RESPONSE (ASHER LANE 2) LIMITEDopenregistry-gb-10217188 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2026-06-01 |
| MERCIA POWER RESPONSE (NOTTINGHAM ROAD) LIMITEDopenregistry-gb-10217239 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2025-06-01 |
| MERCIA POWER RESPONSE (PONTEFRACT ROAD) LIMITEDopenregistry-gb-10217285 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2025-06-01 |
| MERCIA POWER RESPONSE (WHITTINGTON ROAD) LIMITEDopenregistry-gb-10217287 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2025-06-01 |
| MERCIA POWER RESPONSE (SANDY LANE) LIMITEDopenregistry-gb-10269414 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2025-07-07 |
| MERCIA POWER RESPONSE (ALBION CLOSE) LIMITEDopenregistry-gb-10276812 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2025-07-12 |
| MERCIA POWER RESPONSE (CUCKOO ROAD) LIMITEDopenregistry-gb-10276822 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2025-07-12 |
| MERCIA POWER RESPONSE (MANNERS AVENUE 2) LIMITEDopenregistry-gb-10276831 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2025-07-12 |
| MERCIA POWER RESPONSE (THE WOOD YARD) LIMITEDopenregistry-gb-10276847 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2025-07-12 |
| MERCIA POWER RESPONSE (COMMON LANE) LIMITEDopenregistry-gb-10276850 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2025-07-12 |
| MERCIA POWER RESPONSE (OUTGANG LANE) LIMITEDopenregistry-gb-10276869 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2025-07-17 |
| MERCIA POWER RESPONSE (GRAPHITE WAY) LIMITEDopenregistry-gb-10279538 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2025-07-13 |
| DURHAM RP LIMITEDopenregistry-gb-11632552 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 939,223 | 100.00% | 100.00% | 100.00% | 2025-11-02 |
| MERCIA POWER RESPONSE (HALLAM WAY) LIMITEDopenregistry-gb-12395582 | Active | AUDIT EXEMPTION SUBSIDIARY | ORDINARY | 1 | 100.00% | 100.00% | 100.00% | 2026-01-08 |