| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| EHC HOLDINGS TOPCO LIMITED | 12970658 | 23/10/2020 | Amber |
| MIRION TECHNOLOGIES (FINANCE), LTD. | 09419823 | 03/02/2015 | Dissolved |
| SOLAR HOLDINGS TOPCO LIMITED | 14159105 | 08/06/2022 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALSTOM (INVESTMENT) UK LIMITED | 09863932 | 31/08/2016 | 16/06/2017 | Silver |
| ALSTOM TRANSPORTATION (GLOBAL HOLDING) UK LIMITED | 09862744 | 31/08/2016 | 16/06/2017 | Gold |
| CHARTERHOUSE CAPITAL PARTNERS LLP | OC306266 | 18/12/2003 | 15/09/2015 | Bronze |
| CHARTERHOUSE CORPORATE DIRECTORS LIMITED | 02260243 | 08/09/2004 | 15/09/2015 | Not Trading |
| CHARTERHOUSE GP LLP | OC394686 | 30/10/2014 | 15/09/2015 | Silver |
| DALCOR PHARMA UK LTD | 09429551 | 29/04/2016 | 10/05/2017 | One Red Flag |
| EHC HOLDINGS HOLDCO LIMITED | 12981171 | 28/10/2020 | 17/11/2020 | Amber |
| EHC HOLDINGS MIDCO LIMITED | 12977957 | 27/10/2020 | 17/11/2020 | Silver |
| EMERALD 2 LIMITED | 07551799 | 13/05/2011 | 25/07/2011 | Silver |
| EMERALD 3 LIMITED | 07479235 | 13/05/2011 | 25/07/2011 | Dissolved |
| ERM WORLDWIDE LIMITED | 07551849 | 13/05/2011 | 23/05/2011 | Dissolved |
| MIRION TECHNOLOGIES (GLOBAL), LTD. | 09300420 | 07/11/2014 | 09/06/2015 | Amber |
| MIRION TECHNOLOGIES (HOLDINGREP), LTD. | 09299670 | 06/11/2014 | 09/06/2015 | Bronze |
| MIRION TECHNOLOGIES (HOLDINGSUB1), LTD. | 09299516 | 06/11/2014 | 09/06/2015 | One Red Flag |
| MIRION TECHNOLOGIES (HOLDINGSUB2), LTD. | 09299632 | 06/11/2014 | 09/06/2015 | One Red Flag |
| SOLAR HOLDINGS BIDCO LIMITED | 14161246 | 09/06/2022 | 30/09/2022 | Amber |
| SOLAR HOLDINGS HOLDCO LIMITED | 14161650 | 09/06/2022 | 30/09/2022 | Amber |
| SOLAR HOLDINGS MIDCO 2 LIMITED | 14232097 | 13/07/2022 | 30/09/2022 | Amber |
| SOLAR HOLDINGS MIDCO LIMITED | 14159872 | 08/06/2022 | 30/09/2022 | Amber |
| WATLING STREET CAPITAL PARTNERS LLP | OC369654 | 09/11/2011 | 19/06/2019 | Gold |