| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| E C C Calcium Carbonates Ltd | 00209433 | 13/07/1999 | Dissolved |
| E C C Chemicals & Polymers Ltd | 01269972 | 13/07/1999 | Dissolved |
| E C C Group Ltd | 00501292 | 13/07/1999 | Dissolved |
| E C C I Ltd | 00167619 | 13/07/1999 | Dissolved |
| E C C Lime Distributors Ltd | 00692944 | 13/07/1999 | Dissolved |
| E C C Ltd | 01034420 | 13/07/1999 | Dissolved |
| E C C Minerals Ltd | 00944203 | 13/07/1999 | Dissolved |
| E C C Pacific Ltd | 00267841 | 13/07/1999 | Dissolved |
| E C C Pensions Ltd | 00293795 | 13/07/1999 | Dissolved |
| E C C Quarries Ltd | 02682576 | 13/07/1999 | Dissolved |
| E C C Speciality Chemicals Ltd | 02228493 | 13/07/1999 | Dissolved |
| E.C.C.BALL CLAYS LIMITED | 00213988 | 13/07/1999 | Dissolved |
| Ecc Speciality Minerals Ltd | 00279665 | 13/07/1999 | Dissolved |
| Recclaim Technology Ltd | 00272670 | 13/07/1999 | Dissolved |
| South Coast U K Ltd | 00344734 | 30/06/1997 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| E C C Employee Trust Ltd | 00231239 | 17/06/1999 | 05/12/2001 | Dissolved |
| E.C.C. Finance | 00328908 | 20/05/1999 | 05/12/2001 | Dissolved |
| ECC OVERSEAS INVESTMENTS | 00270707 | 20/05/1999 | 05/12/2001 | Strike Off |
| ENGLISH CHINA CLAYS | 00154236 | 26/07/1999 | 05/12/2001 | Dissolved |
| Ecc Holdings | 02895557 | 20/05/1999 | 05/12/2001 | Dissolved |
| Eclp Ltd | 00327538 | 13/07/1999 | 05/12/2001 | Dissolved |
| IMERYS MINERALS LIMITED | 00269255 | 30/09/1998 | 02/07/2001 | Silver |
| IMERYS TRUSTEES LIMITED | 01587898 | 13/07/1999 | 20/12/2001 | Not Trading |
| IMERYS UK PENSION FUND TRUSTEES LIMITED | 01588199 | 01/09/1995 | 13/02/1996 | Not Trading |
| SOUTH WEST LAKES LIMITED | 03955075 | 17/01/2002 | 25/07/2019 | Bronze |
| SOUTH WEST LAKES TRUST | 03946529 | 08/03/2000 | 25/07/2019 | Bronze |
| ST.AUSTELL GOLF ESTATES LIMITED | 00218277 | 03/11/2015 | 08/04/2020 | Bronze |
| THE KAOLIN AND BALL CLAY ASSOCIATION (UK) | 00366883 | 24/02/1999 | 16/05/2001 | Not Trading |
| WHEAL MARTYN ENTERPRISES LIMITED | 02599839 | 19/11/1999 | 01/04/2010 | Gold |
| WHEAL MARTYN TRUST | 01160460 | 16/07/1999 | 01/04/2010 | Silver |
| Western Excavating (E C C) Ltd | 00344667 | 13/07/1999 | 05/12/2001 | Dissolved |