| Company | Timeline | Status | |
| Parker Classic Works Limited Director • Unreported | 25 Feb 2021←4 Years→Current | Active | |
| M J P Hospitality Limited Director • Race Support Director | 22 Mar 2018←7 Years→Current | Active | |
| Sonic Cars Limited Director • Unreported | 19 Jan 2018←7 Years→Current | Active | |
| Team Parker Racing Limited Secretary • Unreported | 4 Apr 1999←1 Year 5 Months→18 Sep 2000 | Active | |
| Parker Promotions Limited Director • Unreported | 5 Jun 1998←27 Years→Current | Active | |
| Parker Promotions Limited Secretary • Director | 5 Jun 1998←2 Years 3 Months→18 Sep 2000 | Active | |
| Team Parker Racing Limited Director • Unreported | 21 Jan 1998←27 Years→Current | Active | |
