| Manufacturer | Sector | Year | Accounts type |
|---|---|---|---|
| WESTMINSTER STONE COMPANY LIMITED | Glass, ceramics, cement and stone | 1985 | Total exemption (full) |
| HIAB LIMITED | Motor vehicles and parts | 1987 | Full accounts |
| WESTMINSTER HOLDING COMPANY LIMITED | Glass, ceramics, cement and stone | 1990 | Total exemption (full) |
| PORTHMADOG CONCRETE LIMITED | Glass, ceramics, cement and stone | 1991 | Audit-exempt subsidiary |
| A - Z ENGINEERING LIMITED | Fabricated metal products | 1999 | Total exemption (full) |