| WELWYN COMPONENTS LIMITED | Computers, electronics and optics | 1920 | Full accounts |
| RENOLIT UK LIMITED | Rubber and plastics | 1925 | Full accounts |
| CULPITT LIMITED | Food products | 1931 | Full accounts |
| AGMA LIMITED | Chemicals | 1968 | Total exemption (full) |
| MULTITECHNIC LIMITED | Fabricated metal products | 1973 | Total exemption (full) |
| LINDISFARNE LIMITED | Beverages | 1975 | Total exemption (full) |
| GOTT TECHNICAL SERVICES LIMITED | Repair and installation of machinery | 1982 | Total exemption (full) |
| MARTINS THE PRINTERS LIMITED | Printing and recorded media | 1992 | Total exemption (full) |
| SALEM TUBE INTERNATIONAL LIMITED | Other manufacturing | 1993 | Medium company accounts |
| DAIKIN APPLIED (UK) LIMITED | Fabricated metal products | 1998 | Full accounts |
| BEDMAX LIMITED | Wood products | 1999 | Full accounts |
| NORTHUMBERLAND GOLDSMITHS LIMITED | Other manufacturing | 2000 | Total exemption (full) |
| PRECISION HYDRAULIC CYLINDERS (UK) LIMITED | Machinery and equipment | 2001 | Full accounts |
| TELEMETRY-ONLINE LIMITED | Computers, electronics and optics | 2003 | Total exemption (full) |
| ADVANCED AUTOMOTIVE SYSTEMS LIMITED | Fabricated metal products | 2003 | Total exemption (full) |
| MAGNATECH ELECTRONICS LIMITED | Repair and installation of machinery | 2005 | Total exemption (full) |
| TOFCO CPP LIMITED | Electrical equipment | 2006 | Total exemption (full) |
| OFFICE & RECEPTION PLANTERS LIMITED | Other manufacturing | 2006 | Total exemption (full) |