| ESTDALE LIMITED | Wood products | 1973 | Total exemption (full) |
| C E E RELAYS LIMITED | Electrical equipment | 1986 | Total exemption (full) |
| SCENEX LIMITED | Fabricated metal products | 1990 | Total exemption (full) |
| ACORN PLATING LIMITED | Fabricated metal products | 1993 | Total exemption (full) |
| ELITE CUTTERS LIMITED | Other manufacturing | 2003 | Total exemption (full) |
| SOUTHERN PRINT FINISHING SERVICES LIMITED | Repair and installation of machinery | 2005 | Total exemption (full) |
| INTEPRO UK LIMITED | Electrical equipment | 2006 | Total exemption (full) |
| SIGNWRITE STUDIOS LIMITED | Other manufacturing | 2007 | Total exemption (full) |