| Company | Timeline | Status | |
| Cobcrete Limited Director • Unreported | 1 Apr 1994←31 Years→Current | Active | |
| John Cobb & Sons Limited Secretary • Unreported | 5 Jun 1991←2 Years 9 Months→14 Mar 1994 | Active | |
| John Cobb & Sons Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
