| DOW SILICONES UK LIMITED | Chemicals | 1950 | Full accounts |
| ROPERHURST LIMITED | Rubber and plastics | 1976 | Small company accounts |
| HARLECH INDUSTRIAL DOORS LIMITED | Fabricated metal products | 1977 | Total exemption (full) |
| LION LABORATORIES LIMITED | Computers, electronics and optics | 1981 | Full accounts |
| DOOR MAINTENANCE CO. LIMITED | Fabricated metal products | 1984 | Total exemption (full) |
| INTEGRATED GRAPHICS LIMITED | Printing and recorded media | 1991 | Total exemption (full) |
| A.P.C. PANELS LTD. | Other manufacturing | 1993 | Total exemption (full) |
| SRA ENGINEERING SERVICES LIMITED | Fabricated metal products | 2002 | Total exemption (full) |
| PDC DIGITAL SOLUTIONS LIMITED | Computers, electronics and optics | 2003 | Total exemption (full) |
| SAXTON MARINE SUPPLIES LIMITED | Repair and installation of machinery | 2004 | Total exemption (full) |
| MILDEF LIMITED | Computers, electronics and optics | 2006 | Full accounts |
| R & G. PHILLIPS LTD | Repair and installation of machinery | 2007 | Total exemption (full) |
| NEW LED LIGHT LIMITED | Electrical equipment | 2008 | Total exemption (full) |
| DOOR MAINTENANCE GROUP LIMITED | Repair and installation of machinery | 2009 | Group accounts |