| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AMUTECH LTD | 11933631 | 09/04/2019 | Silver |
| ENERGETICS MIDCO LIMITED | SC455134 | 04/06/2015 | Dissolved |
| ESP WATER LIMITED | 13495621 | 25/10/2021 | One Red Flag |
| ESP WATER RETAIL LIMITED | 13494724 | 25/10/2021 | Not Trading |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| E.S. PIPELINES LIMITED | 03822878 | 25/10/2021 | 09/07/2024 | Bronze |
| ENERGETICS DESIGN & BUILD LIMITED | SC234695 | 04/06/2015 | 25/07/2018 | Amber |
| ENERGY NETWORKS ASSOCIATION LIMITED | 04832301 | 01/01/2009 | 19/02/2013 | One Red Flag |
| ENVOY ASSET MANAGEMENT LIMITED | 05311626 | 11/12/2008 | 30/04/2013 | Dissolved |
| ESP CONNECTIONS LIMITED | 03234745 | 25/10/2021 | 09/07/2024 | Strike Off |
| ESP ELECTRICITY LIMITED | 04718806 | 25/10/2021 | 09/07/2024 | Bronze |
| ESP NETWORKS LIMITED | 02865198 | 25/10/2021 | 09/07/2024 | Strike Off |
| ESP PIPELINES LIMITED | 03405272 | 25/10/2021 | 09/07/2024 | Strike Off |
| ESP UTILITIES GROUP LIMITED | 02612105 | 25/10/2021 | 09/07/2024 | Silver |
| ESPUG FINANCE LIMITED | 10933801 | 25/10/2021 | 09/07/2024 | Silver |
| IAM CHAPTERS LIMITED | 08745278 | 23/10/2013 | 01/05/2015 | Not Trading |
| IAM TRADING LIMITED | 04990747 | 01/07/2008 | 01/05/2015 | Amber |
| LAST MILE ASSET MANAGEMENT LIMITED | SC546822 | 03/10/2016 | 18/06/2019 | One Red Flag |
| LAST MILE ELECTRICITY LIMITED | SC234694 | 03/10/2016 | 22/03/2017 | Bronze |
| LAST MILE GAS LIMITED | SC303150 | 03/10/2016 | 22/03/2017 | Bronze |
| LAST MILE INFRASTRUCTURE HOLDCO LIMITED | SC455073 | 04/06/2015 | 06/05/2019 | One Red Flag |
| LAST MILE INFRASTRUCTURE LIMITED | SC293480 | 04/06/2015 | 06/08/2018 | Silver |
| LAST MILE INFRASTRUCTURE UK LIMITED | SC546714 | 03/10/2016 | 22/03/2017 | One Red Flag |
| THE INSTITUTE OF ASSET MANAGEMENT | 05056259 | 01/09/2007 | 28/06/2016 | Gold |