| LEE & PLUMPTON LIMITED | Furniture | 1975 | Full accounts |
| TEAL PRESS LIMITED | Printing and recorded media | 1985 | Total exemption (full) |
| BARRIER BIOTECH LIMITED | Chemicals | 1990 | Total exemption (full) |
| HYDRAMEC LIMITED | Ships, aircraft, rail and other transport | 1990 | Audit-exempt subsidiary |
| DEVANTECH LIMITED | Computers, electronics and optics | 1992 | Total exemption (full) |
| ULTIMET FILMS LIMITED | Basic metals | 1995 | Total exemption (full) |
| BARRIER HOLDINGS LIMITED | Other manufacturing | 2000 | Total exemption (full) |
| HRM BOILERS LIMITED | Fabricated metal products | 2001 | Total exemption (full) |
| BARKERS PRINT AND DESIGN LIMITED | Printing and recorded media | 2001 | Total exemption (full) |
| A A U LIMITED | Electrical equipment | 2002 | Total exemption (full) |
| HVE LIMITED | Printing and recorded media | 2003 | Total exemption (full) |
| A & N PERKINS LIMITED | Food products | 2004 | Total exemption (full) |
| WBC (NORFOLK) LIMITED | Beverages | 2005 | Total exemption (full) |
| WATERMIST LIMITED | Machinery and equipment | 2006 | Total exemption (full) |
| TOUCHDOWN ENGINEERING LIMITED | Ships, aircraft, rail and other transport | 2006 | Total exemption (full) |
| TCF SHEET METAL LIMITED | Fabricated metal products | 2008 | Total exemption (full) |
| CONSULT DESIGN CREATE LIMITED | Ships, aircraft, rail and other transport | 2008 | Total exemption (full) |
| ASH MANUFACTURING LIMITED | Fabricated metal products | 2010 | Total exemption (full) |
| ASH MANUFACTURING (SERVICES) LIMITED | Other manufacturing | 2010 | Total exemption (full) |