| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Marley Brick (Nottingham) Ltd | 02325230 | 29/05/1992 | Dissolved |
| Marley Transport Ltd | 00417319 | 29/05/1992 | Dissolved |
| Petrus Holdings Ltd | 05318577 | 11/02/2005 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AIRCRETE LIMITED | 02121050 | 25/01/1993 | 07/03/2005 | Gold |
| AIRCRETE PRODUCTS ASSOCIATION LTD | 01558038 | 25/01/1993 | 07/03/2005 | Gold |
| ASBESTOS INFORMATION CENTRE LIMITED(THE) | 01333889 | 27/01/2006 | 27/11/2006 | Dissolved |
| BRITISH CERAMIC TILE COUNCIL LIMITED | 00723947 | 11/03/1994 | 04/11/1999 | Dissolved |
| BRITISH PRECAST CONCRETE FEDERATION LIMITED(THE) | 01209092 | 07/05/1998 | 31/12/2006 | Gold |
| CONSTRUCTION PRODUCTS ASSOCIATION | 03861752 | 30/04/2003 | 24/04/2007 | Gold |
| ETERNIT UK LIMITED | 00217768 | 13/06/2005 | 08/12/2006 | Gold |
| ETEX (EXTERIORS) UK LIMITED | 00486100 | 29/05/1992 | 08/12/2006 | Gold |
| Errol Clay Sales Ltd | SC020797 | 18/03/1992 | 18/03/1997 | Dissolved |
| FIBRE CEMENT MANUFACTURERS' ASSOCIATION LIMITED(THE) | 01576751 | 27/01/2006 | 27/11/2006 | Amber |
| HANSON THERMALITE LIMITED | 01698861 | 01/01/2000 | 07/03/2005 | Not Trading |
| MALDOR BRICK LIMITED | 00295383 | 29/05/1992 | 22/10/1993 | Dissolved |
| Maldor Ltd | 00106619 | 29/05/1992 | 22/10/1993 | Dissolved |
| THE BRICK DEVELOPMENT ASSOCIATION LIMITED | 00944844 | 10/06/1993 | 23/10/1993 | Gold |
| THE ML UK ROOF TILE COMPANY LIMITED | 01858735 | 29/05/1992 | 01/09/2006 | Not Trading |
| THERMALITE (U.K.) LIMITED | 01667421 | 29/05/1992 | 01/09/2006 | Insolvent |
| The Marley Paving Co Ltd | 01771761 | 29/05/1992 | 01/09/2006 | Dissolved |
| Thermalite Ltd | 00263226 | 29/05/1992 | 01/09/2006 | Dissolved |
| Thermalite Scotland Ltd | SC046429 | 18/03/1992 | 01/12/2006 | Dissolved |