| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Dart Chemicals Ltd | 01343281 | 24/08/1991 | Dissolved |
| Hydralock Systems Ltd | 02685046 | 26/03/1992 | Dissolved |
| LAMBROSE ENVIRONMENTAL SERVICES LIMITED | 00647399 | 24/08/1991 | Dissolved |
| LAMRO TECHNOLOGY LIMITED | 01402658 | 24/08/1991 | Dissolved |
| Lambson Group Ltd | 01527268 | 27/08/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Fern Tankers Ltd | 00627425 | 24/08/1991 | 02/10/1991 | Dissolved |
| LAMBSON BUILDING PRODUCTS LIMITED | 00878297 | 24/08/1991 | 28/08/2003 | Bronze |
| LAMBSON LIMITED | 02838052 | 09/09/1993 | 01/10/2019 | Gold |