| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| D H Research Ltd | 03520851 | 03/03/1998 | Dissolved |
| D H Research Ltd | 03520851 | 03/03/1998 | Dissolved |
| DH RESEARCH & RHEOLOGICAL SERVICES LIMITED | 01104610 | 27/09/1991 | Dissolved |
| POLYMER DEPOLYMERISATION LIMITED | 07376116 | 14/09/2010 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Biogel Ltd | 01804587 | 05/10/1991 | 29/06/1992 | Dissolved |
| Buymate Ltd | 01200554 | 08/03/1991 | 15/03/2003 | Dissolved |
| DRFP HOLDINGS LIMITED | 03116098 | 16/01/1996 | 19/07/2001 | Dissolved |
| I.H. LABORATORIES LIMITED | 01175917 | 22/03/1991 | 29/06/1992 | Dissolved |
| I.H. LABORATORIES LIMITED | 01175917 | 22/03/1991 | 29/06/1992 | Dissolved |
| ITM POWER (RESEARCH) LIMITED | 03973827 | 19/02/2002 | 23/11/2009 | Not Trading |
| ITM POWER (TRADING) LIMITED | 06156553 | 01/05/2007 | 23/11/2009 | One Red Flag |
| ITM POWER PLC | 05059407 | 14/04/2004 | 23/11/2009 | Amber |
| Polymeric Sciences Ltd | 02194593 | 23/03/1991 | 29/06/1992 | Dissolved |
| Polymeric Sciences Ltd | 02194593 | 23/03/1991 | 29/06/1992 | Dissolved |
| SUPERCAPACITOR MATERIALS LTD | 10417296 | 20/11/2016 | 15/08/2022 | Amber |
| SUPERDIELECTRICS AUTOMOTIVE LTD | 12272406 | 21/10/2019 | 15/08/2022 | Not Trading |
| SUPERDIELECTRICS AUTONOMOUS FLYING VEHICLES LTD | 12272413 | 21/10/2019 | 15/08/2022 | Not Trading |
| SUPERDIELECTRICS ELECTRIC AIRCRAFT LTD | 12272331 | 21/10/2019 | 15/08/2022 | Not Trading |
| SUPERDIELECTRICS ELECTRIC BICYCLES LTD | 12272466 | 21/10/2019 | 15/08/2022 | Not Trading |
| SUPERDIELECTRICS ELECTRIC HOUSEHOLD PRODUCTS LTD | 12272386 | 21/10/2019 | 15/08/2022 | Not Trading |
| SUPERDIELECTRICS ELECTRIC INDUSTRIAL PRODUCTS LTD | 12272907 | 21/10/2019 | 15/08/2022 | Not Trading |
| SUPERDIELECTRICS ELECTRIC SHIPS LTD | 12272810 | 21/10/2019 | 15/08/2022 | Not Trading |
| SUPERDIELECTRICS ELECTRIC TRAINS LTD | 12272448 | 21/10/2019 | 15/08/2022 | Not Trading |
| SUPERDIELECTRICS GRID POWER MANAGEMENT LTD | 12272429 | 21/10/2019 | 15/08/2022 | Not Trading |
| SUPERDIELECTRICS GROUP PLC | 13631590 | 29/10/2021 | 30/06/2023 | Silver |
| SUPERDIELECTRICS LTD | 08536866 | 20/05/2013 | 29/10/2021 | Amber |
| SUPERDIELECTRICS MOBILE ELECTRONICS LTD | 12272780 | 21/10/2019 | 15/08/2022 | Not Trading |
| SUPERDIELECTRICS MOTORSPORT LTD | 12272459 | 21/10/2019 | 15/08/2022 | Not Trading |
| SUPERDIELECTRICS RAPID REFUELLING LTD | 12272081 | 21/10/2019 | 15/08/2022 | Not Trading |
| SUPERDIELECTRICS RENEWABLE ENERGY STORAGE LTD | 12271854 | 21/10/2019 | 15/08/2022 | Not Trading |
| SUPERDIELECTRICS SUPERCAP LTD | 13620939 | 14/09/2021 | 20/09/2021 | Not Trading |
| SUPERDIELECTRICS VERTICAL FARMING LTD | 12272848 | 21/10/2019 | 15/08/2022 | Not Trading |