| Company | Timeline | Status | |
| Newline Civil Engineering Limited Director • Company Director | 13 Sep 1994←20 Years→20 Feb 2015 | Active | |
| Charles Gregory (Civil Engineering) Limited Director • Civil Engineer | 22 Nov 1991←8 Months→30 Jul 1992 | Dissolved | |
| Charles Grip Surfacing Limited Director • Unreported | 1 Jan 1970←22 Years→30 Jul 1992 | Active | |
