| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Atmospheric Pollution Control Ltd | 02489930 | 06/04/1992 | Dissolved |
| Henley Burrowes & Co (Northern) Ltd | 01459038 | 06/11/1991 | Dissolved |
| Henley Burrowes & Co Ltd | 00565362 | 21/11/1991 | Dissolved |
| Henley Burrowes (Mechanical Engineering) Ltd | 01409633 | 06/11/1991 | Dissolved |
| Henley Burrowes (Scientific Services) Ltd | 01446218 | 06/11/1991 | Dissolved |
| Henley Burrowes Commercial Services Ltd | 01474461 | 06/11/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| E R I (Technology) Ltd | 02683469 | 12/02/1993 | 31/07/1998 | Dissolved |
| E R I Henley Burrowes Ltd | 03095106 | 24/08/1995 | 29/08/1998 | Dissolved |
| Eri (Hereford & Worcester) Ltd | 03180374 | 23/05/1997 | 10/07/1998 | Dissolved |
| HLC ENVIRONMENTAL HOLDINGS LIMITED | 03498790 | 22/04/1998 | 16/10/1998 | Dissolved |
| Hlc (Neath Port Talbot) Ltd | 03528745 | 21/05/1998 | 12/02/2003 | Dissolved |
| Hlc Henley Burrowes Ltd | 03645102 | 01/12/1998 | 12/02/2003 | Dissolved |
| Hlc Wrexham Ltd | 03502273 | 20/10/2000 | 12/02/2003 | Dissolved |