| IPECO HOLDINGS LIMITED | Ships, aircraft, rail and other transport | 1960 | Group accounts |
| CMR CONTROLS LIMITED | Computers, electronics and optics | 1978 | Total exemption (full) |
| MULHOUSE LIMITED | Fabricated metal products | 1980 | Total exemption (full) |
| AVIATION MARKETING CONSULTANTS INDUSTRIES LIMITED | Ships, aircraft, rail and other transport | 1982 | Audit-exempt subsidiary |
| INTELCOMM (UK) LIMITED | Other manufacturing | 1989 | Total exemption (full) |
| HANNINGFIELD PROCESS SYSTEMS LIMITED | Machinery and equipment | 1993 | Total exemption (full) |
| T.L.C. GLAZING LIMITED | Rubber and plastics | 1996 | Total exemption (full) |
| SUPREME INSTALLATIONS (SOUTH EAST) LIMITED | Other manufacturing | 1999 | Total exemption (full) |
| RF & NOISE COMPONENTS LTD | Computers, electronics and optics | 2003 | Total exemption (full) |
| HELBAR AUTOMATION LIMITED | Machinery and equipment | 2003 | Total exemption (full) |
| CLIQ LIMITED | Other manufacturing | 2003 | Total exemption (full) |
| COMMERCIAL PSV LIMITED | Other manufacturing | 2003 | Total exemption (full) |
| CARE & COMFORT PRODUCTS LIMITED | Furniture | 2004 | Total exemption (full) |
| HIGH GRADE METAL POLISHERS LIMITED | Fabricated metal products | 2006 | Unaudited abridged |
| R E ESSEX LIMITED | Other manufacturing | 2008 | Total exemption (full) |
| GALLOWS BRACKETS LIMITED | Fabricated metal products | 2010 | Total exemption (full) |
| CAPITOL DIGITAL LTD | Paper and paperboard | 2010 | Total exemption (full) |