| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CORBY ASPHALT AND ROOFING LIMITED | 03305056 | 27/10/2006 | Dissolved |
| Guaranteed Asphalt (Corby) Ltd | 02358810 | 01/04/1991 | Dissolved |
| THE ASPHALT COMPANY LTD. | 02841100 | 23/11/2006 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ASPHALT PLANT LIMITED | 02841110 | 27/10/2006 | 13/06/2014 | One Red Flag |
| GUARANTEED ASPHALT LIMITED | 03320682 | 18/11/1998 | 07/06/2001 | Bronze |
| Guaranteed Asphalt Holdings Plc | 01043545 | 30/04/1991 | 30/06/1993 | Dissolved |
| LONDON ASPHALT AND ROOFING LIMITED | 02834276 | 18/10/1993 | 12/12/1993 | Dissolved |
| LONDON ASPHALT AND ROOFING LIMITED | 02834276 | 12/07/1993 | 11/11/1998 | Dissolved |
| Trinidad Asphalt Ltd | 03569067 | 22/05/1998 | 02/11/2000 | Dissolved |