| Company | Timeline | Status | |
| Castle Cement Limited Secretary • Unreported | 23 May 1991←2 Years 7 Months→31 Dec 1993 | Active | |
| Castle Cement (Pitstone) Limited Secretary • Unreported | 23 May 1991←2 Years 4 Months→21 Sep 1993 | Active | |
| Tunnel Cement Limited Secretary • Unreported | 23 May 1991←2 Years 4 Months→21 Sep 1993 | Active | |
| Castle Cement (Padeswood) Limited Secretary • Unreported | 23 May 1991←2 Years 4 Months→21 Sep 1993 | Active | |
Ribblesdale Cement Limited Secretary • Unreported | 23 May 1991←2 Years 4 Months→21 Sep 1993 | Dissolved | |
Clyde Cement Limited Secretary • Unreported | 23 May 1991←2 Years 4 Months→21 Sep 1993 | Dissolved | |
| Castle Building Products Limited Secretary • Unreported | 23 May 1991←2 Years 4 Months→21 Sep 1993 | Active | |
| Ketton Cement Limited Secretary • Unreported | 23 May 1991←2 Years 4 Months→21 Sep 1993 | Active | |
| Castle Lime Limited Secretary • Unreported | 23 May 1991←2 Years 4 Months→21 Sep 1993 | Active | |
| Castle Cement (Ribblesdale) Limited Secretary • Unreported | 23 May 1991←2 Years 4 Months→21 Sep 1993 | Active | |
