| Company | Timeline | Status | |
| Welford Solar Farm Limited Director • Director | 25 Sep 2023←2 Years 1 Month→Current | Active | |
| Welford Solar Farm Limited Director • Director | 25 Sep 2023←1 Year 10 Months→28 Jul 2025 | Active | |
| Parker Green Energy Limited Director • Managing Director | 7 Jun 2022←3 Years→Current | Active | |
| William Parker Holdings Limited Director • Managing Director | 19 Feb 2021←4 Years→Current | Active | |
| Parker Strategic Holdings Limited Director • Managing Director | 18 Feb 2021←4 Years→Current | Active | |
| Colton Square Realisations 1 Limited Director • Managing Director | 15 Feb 2021←2 Years 10 Months→30 Dec 2023 | Dissolved | |
| W & J Parker Properties Limited Director • Company Director | 7 Aug 2019←6 Years→Current | Active | |
| W & J Parker Holdings Limited Director • Company Director | 26 Jul 2018←7 Years→Current | Active | |
| W.& J.Parker,Limited Director • Company Director | 2 Feb 2018←7 Years→Current | Active | |
| H.G.O Investment Limited Director • Company Director | 17 Aug 2017←8 Years→Current | Active | |
