| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| DISCOUNT TYRES LIMITED | 01517549 | 11/10/1991 | Bronze |
| DISCOUNT WHOLESALE TYRES (HEMEL) LIMITED | 01509336 | 31/12/1990 | Bronze |
| Porters End Estates Ltd | 02693320 | 03/03/1992 | Dissolved |
| Supertyres & Exhaust Centre Ltd | 01229438 | 28/08/1991 | Dissolved |
| Welwyn Estates Ltd | 02940334 | 06/06/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AUTO SERVICE & TUNING CENTRE LIMITED | 02574152 | 31/01/1991 | 15/03/1995 | Silver |
| Auto Alarm and Phone Centre Ltd | 02783774 | 26/01/1993 | 12/11/1994 | Dissolved |
| LOWERED RECORDINGS LIMITED | 01550964 | 16/04/1991 | 11/10/2002 | Dissolved |
| SUPERTYRES MOTORISTS CENTRE (WELWYN) LIMITED | 01718345 | 24/11/1991 | 28/11/2011 | Bronze |
| SUPERTYRES MOTORISTS CENTRE (WELWYN) LIMITED | 01718345 | 24/11/1991 | 28/11/2011 | Bronze |
| Supertyres Motorists Centre Ltd | 01990121 | 18/06/1991 | 31/07/1998 | Dissolved |