| Company | Timeline | Status | |
| Sparrows Herne Development Limited Secretary • Unreported | 1 May 2003←22 Years→Current | Active | |
| William Evans (Luton) Limited Secretary • Unreported | 1 May 2003←22 Years→Current | Active | |
| Roger Evans (Harpenden) Ltd Director • Chartered Surveyor | 26 Dec 1991←24 Years→31 May 2016 | Dissolved | |
| Sparrows Herne Development Limited Director • Chartered Surveyor | 1 Jan 1970←55 Years→Current | Active | |
| William Evans (Luton) Limited Director • Chartered Surveyor | 1 Jan 1970←55 Years→Current | Active | |
