| Company | Timeline | Status | |
| Sparrows Herne Development Limited Director • None | 1 May 2003←20 Years→14 Dec 2023 | Active | |
| William Evans (Luton) Limited Director • None | 1 May 2003←20 Years→14 Dec 2023 | Active | |
| Roger Evans (Harpenden) Ltd Secretary • Unreported | 15 Mar 2003←13 Years→31 May 2016 | Dissolved | |
| William Evans (Luton) Limited Secretary • Unreported | 31 May 1991←3 Months→9 Sep 1991 | Active | |
