| Company | Timeline | Status | |
| Ensign Highways Holdings Limited Secretary • Company Secretary | 28 Nov 2007←12 Years→31 Oct 2020 | Active | |
| Ensign Highways Limited Secretary • Company Secretary | 28 Nov 2007←12 Years→31 Oct 2020 | Active | |
Highways Waste Limited Secretary • Unreported | 1 Apr 2005←12 Years→9 Jan 2018 | Dissolved | |
| AFS-Colas Lighting Limited Secretary • Company Secretary | 1 Apr 2005←15 Years→31 Oct 2020 | Dissolved | |
| Wight Highways Limited Secretary • Unreported | 1 Apr 2005←15 Years→31 Oct 2020 | Dissolved | |
| A One Integrated Highway Services Limited Secretary • Unreported | 1 Apr 2005←15 Years→31 Oct 2020 | Active | |
| Colas Highway Services Limited Secretary • Unreported | 1 Apr 2005←15 Years→31 Oct 2020 | Dissolved | |
| Aram Resources Limited Secretary • Unreported | 1 Apr 2005←5 Years→31 Oct 2010 | Active | |
| West Of England Quarry Company Limited Secretary • Unreported | 1 Apr 2005←15 Years→31 Oct 2020 | Active | |
| Tregunnon Quarry Limited Secretary • Unreported | 1 Apr 2005←15 Years→31 Oct 2020 | Active | |
