| DON WHITLEY SCIENTIFIC LIMITED | Machinery and equipment | 1977 | Group accounts |
| KEYLIGHTING LIMITED | Electrical equipment | 1984 | Total exemption (full) |
| I.M.T. (U.K.) LIMITED | Textiles | 1992 | Total exemption (full) |
| SPACE PRODUCTIV LIMITED | Fabricated metal products | 1995 | Total exemption (full) |
| NEVIS COMPUTERS LIMITED | Computers, electronics and optics | 1997 | Total exemption (full) |
| TRICO V.E. LIMITED | Glass, ceramics, cement and stone | 1998 | Total exemption (full) |
| SEASONAL DISPLAYS LIMITED | Other manufacturing | 1999 | Total exemption (full) |
| PENICO GAUGES LIMITED | Fabricated metal products | 1999 | Total exemption (full) |
| LEEMING & PEEL LIMITED | Fabricated metal products | 1999 | Total exemption (full) |
| GOOSE EYE BREWERY LIMITED | Beverages | 2002 | Total exemption (full) |
| DISPLAY FACTORY LIMITED | Furniture | 2004 | Total exemption (full) |
| RUSKINN LIFE SCIENCES LIMITED | Machinery and equipment | 2006 | Total exemption (full) |
| BILL EMERY SPARK EROSION LIMITED | Basic metals | 2008 | Total exemption (full) |
| TMC BESPOKE JOINERY LIMITED | Wood products | 2010 | Total exemption (full) |