| Company | Timeline | Status | |
| William Cook Leeds Limited Director • Managing Director | 1 Nov 2016←3 Months→28 Feb 2017 | Active | |
| William Cook (MS) 2018 Limited Director • Managing Director | 1 Nov 2016←3 Months→28 Feb 2017 | Dissolved | |
| William Cook Rail Limited Director • Managing Director | 15 Jul 2016←7 Months→28 Feb 2017 | Active | |
Bentley Rail Services Limited Director • Director | 18 Feb 2016←2 Years 1 Month→3 Apr 2018 | Dissolved | |
