| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CHANTRY BUSINESS ASSOCIATES LLP | OC400799 | 14/07/2015 | Bronze |
| J.S.I. Holdings Limited | 02541442 | 20/09/1991 | Dissolved |
| Magnum Cars Ltd | 02300431 | 14/02/1991 | Dissolved |
| Magnum Engineering (Corby) Ltd | 02180933 | 22/03/1991 | Dissolved |
| Magnum Race Associates Ltd | 02076616 | 22/03/1991 | Dissolved |
| Magnum Race Cars (Corby) Ltd | 02442429 | 13/11/1991 | Dissolved |
| Magnum Race Cars Ltd | 01764342 | 22/03/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| A.E.M. PRODUCTS LIMITED | 03013552 | 26/09/1997 | 24/01/2017 | Silver |
| Automotive Engineering Manufacturing (U K) Ltd | 02704348 | 07/04/1992 | 10/05/1994 | Dissolved |
| HARBY INVESTMENTS LIMITED | 07508284 | 27/01/2011 | 01/02/2017 | Silver |
| RUSHMERE INVESTMENTS LLP | OC364193 | 01/03/2012 | 24/01/2017 | Dissolved |
| SPELLFAME RACING LLP | OC366392 | 01/03/2012 | 18/09/2017 | Strike Off |
| WATTISHAM PROPERTY LLP | OC366940 | 02/08/2011 | 23/01/2017 | Bronze |