| DUDLEY INDUSTRIES LIMITED | Fabricated metal products | 1942 | Audit-exempt subsidiary |
| VARIAN MEDICAL SYSTEMS UK LIMITED | Computers, electronics and optics | 1955 | Full accounts |
| DAVOL INTERNATIONAL LIMITED | Other manufacturing | 1963 | Full accounts |
| BARD LIMITED | Other manufacturing | 1968 | Full accounts |
| CANON MEDICAL SYSTEMS LIMITED | Computers, electronics and optics | 1970 | Full accounts |
| PETER PERKS LIMITED | Rubber and plastics | 1971 | Total exemption (full) |
| CHEMIGRAPHIC LIMITED | Electrical equipment | 1972 | Full accounts |
| BROADBRIDGE PRECISION ENGINEERING LIMITED | Computers, electronics and optics | 1977 | Total exemption (full) |
| DISCO HI-TEC U.K. LTD. | Repair and installation of machinery | 1980 | Small company accounts |
| INTEGRATED SECURITY MANUFACTURING LIMITED | Computers, electronics and optics | 1988 | Total exemption (full) |
| HELLERMANNTYTON DATA LIMITED | Computers, electronics and optics | 1989 | Full accounts |
| SULZER PUMPS WASTEWATER UK LIMITED | Repair and installation of machinery | 1989 | Full accounts |
| FORTUNE COOKIE COMPANY LIMITED | Food products | 1990 | Total exemption (full) |
| ESKIMO ICE LIMITED | Other manufacturing | 1990 | Small company accounts |
| SPACETITLE LIMITED | Printing and recorded media | 1990 | Total exemption (full) |
| BENCHMARK REPROGRAPHICS LIMITED | Printing and recorded media | 1991 | Total exemption (full) |
| FRONTIER-PITTS LIMITED | Other manufacturing | 1991 | Medium company accounts |
| G.E.W. (EC) LIMITED | Machinery and equipment | 1991 | Full accounts |
| RADIOMETER LIMITED | Computers, electronics and optics | 1991 | Full accounts |
| BLUEBIRD CHAIN & FINDINGS LIMITED | Other manufacturing | 1991 | Total exemption (full) |
| FREEZE DRYING SERVICES LIMITED | Repair and installation of machinery | 1991 | Total exemption (full) |
| COMMTEL LIMITED | Computers, electronics and optics | 1992 | Total exemption (full) |
| APTIV SERVICES UK LIMITED | Motor vehicles and parts | 1993 | Full accounts |
| EVERSYS UK LIMITED | Repair and installation of machinery | 1994 | Full accounts |
| THE NATURAL EARTH BUILDING & CONSTRUCTION COMPANY LIMITED | Textiles | 1995 | Total exemption (full) |
| THE PLATING SHOP LIMITED | Other manufacturing | 1995 | Total exemption (full) |
| ELEKTA LIMITED | Other manufacturing | 1996 | Full accounts |
| AIRCRAFT SIMULATION SERVICES LIMITED | Repair and installation of machinery | 1997 | Total exemption (full) |
| CRS ELECTRONICS LIMITED | Computers, electronics and optics | 2001 | Total exemption (full) |
| TORIN SIFAN LIMITED | Electrical equipment | 2002 | Audit-exempt subsidiary |
| VOLUTION HOLDINGS LIMITED | Electrical equipment | 2002 | Audit-exempt subsidiary |
| VOLUTION VENTILATION GROUP LIMITED | Electrical equipment | 2002 | Audit-exempt subsidiary |
| BANZ LIMITED | Other manufacturing | 2003 | Total exemption (full) |
| INTEGRATED SECURITY MANUFACTURING HOLDINGS LIMITED | Computers, electronics and optics | 2003 | Total exemption (full) |
| ONE STOP JOINERY LIMITED | Wood products | 2004 | Total exemption (full) |
| BN THERMIC LTD | Electrical equipment | 2005 | Total exemption (full) |
| BLUE LIZARD SIGNS LIMITED | Other manufacturing | 2005 | Total exemption (full) |
| COLOUR DATA UK LTD | Other manufacturing | 2005 | Total exemption (full) |
| ARUN TECHNOLOGY LTD | Computers, electronics and optics | 2005 | Small company accounts |
| HELLERMANNTYTON LIMITED | Rubber and plastics | 2005 | Full accounts |
| MARDEN ENGINEERING LIMITED | Fabricated metal products | 2006 | Total exemption (full) |
| SMOKE CONTROL SOLUTIONS LIMITED | Repair and installation of machinery | 2006 | Total exemption (full) |
| MELLOWS METAL FINISHING LTD | Other manufacturing | 2006 | Total exemption (full) |
| EKA CONCRETE LTD | Glass, ceramics, cement and stone | 2007 | Total exemption (full) |
| NEW NUCLETRON UK LIMITED | Other manufacturing | 2007 | Small company accounts |
| MIXX LIMITED | Electrical equipment | 2007 | Total exemption (full) |
| CRAWLEY METAL SUPPLIES LIMITED | Fabricated metal products | 2007 | Total exemption (full) |
| SOUTH EAST FABRICATORS LTD | Fabricated metal products | 2008 | Total exemption (full) |
| HIGH CALIBRE ENGINEERING LTD | Computers, electronics and optics | 2010 | Total exemption (full) |
| GEORGE AND SON LIMITED | Repair and installation of machinery | 2010 | Total exemption (full) |
| DANSOFT AVIATION SERVICES LTD | Repair and installation of machinery | 2010 | Total exemption (full) |
| YB PLATING LIMITED | Fabricated metal products | 2010 | Total exemption (full) |
| WAVETRONIX LIMITED | Ships, aircraft, rail and other transport | 2010 | Small company accounts |