| G.PRUDHOE & COMPANY LIMITED | Printing and recorded media | 1938 | Total exemption (full) |
| CON MECH GROUP LIMITED | Fabricated metal products | 1949 | Audit-exempt subsidiary |
| INSTALLATION & MANUFACTURING CONTRACTORS LIMITED | Rubber and plastics | 1961 | Total exemption (full) |
| BIGNALL GROUP LTD | Repair and installation of machinery | 1976 | Total exemption (full) |
| CRAFTGRANGE LIMITED | Motor vehicles and parts | 1980 | Total exemption (full) |
| MAWERS LIMITED | Printing and recorded media | 1981 | Total exemption (full) |
| REACT (NORTHERN) LIMITED | Repair and installation of machinery | 1985 | Total exemption (full) |
| TIMLA LIMITED | Fabricated metal products | 1988 | Total exemption (full) |
| DIRECT SIGNS (NORTHERN) LIMITED | Other manufacturing | 1990 | Unaudited abridged |
| THE A1 STEAM LOCOMOTIVE TRUST | Ships, aircraft, rail and other transport | 1991 | Group accounts |
| BS FABRICATIONS LIMITED | Basic metals | 1991 | Total exemption (full) |
| AW FABRICATION LIMITED | Fabricated metal products | 1992 | Total exemption (full) |
| DFL MATERIALS HANDLING LIMITED | Repair and installation of machinery | 1994 | Unaudited abridged |
| KOPPERS PERFORMANCE CHEMICALS UK LIMITED | Chemicals | 1995 | Medium company accounts |
| NORTHGATE HIGHWAYS LIMITED | Rubber and plastics | 1995 | Audit-exempt subsidiary |
| SUBSEA INNOVATION LIMITED | Machinery and equipment | 1995 | Small company accounts |
| EVERGREEN PALLET SOLUTIONS (UK) LIMITED | Wood products | 1996 | Total exemption (full) |
| GLORYBLAZE LTD | Other manufacturing | 1997 | Unaudited abridged |
| DIGITAL OFFICE SOLUTIONS LIMITED | Repair and installation of machinery | 1998 | Total exemption (full) |
| PREMIER CELL FIT LIMITED | Repair and installation of machinery | 2000 | Total exemption (full) |
| CARMEL STRUCTURES LIMITED | Fabricated metal products | 2000 | Unaudited abridged |
| MECH-TOOL ENGINEERING LIMITED | Fabricated metal products | 2000 | Total exemption (full) |
| BROWNS FABRICATIONS LIMITED | Fabricated metal products | 2002 | Total exemption (full) |
| PRINTWELL (NORTH EAST) LTD | Printing and recorded media | 2003 | Total exemption (full) |
| E-TYPE FABS LTD | Fabricated metal products | 2003 | Total exemption (full) |
| PARAGON RAPID TECHNOLOGIES LTD | Rubber and plastics | 2003 | Total exemption (full) |
| ALMIT METAL FINISHING LTD | Fabricated metal products | 2004 | Small company accounts |
| THE V4 STEAM LOCOMOTIVE COMPANY LIMITED | Ships, aircraft, rail and other transport | 2005 | Total exemption (full) |
| D FRANCE STONEMASONRY LIMITED | Glass, ceramics, cement and stone | 2005 | Total exemption (full) |
| G & T ROBSON LTD | Fabricated metal products | 2006 | Total exemption (full) |
| COVTEC LIMITED | Electrical equipment | 2007 | Total exemption (full) |
| JS ENGINEERING UK LTD | Fabricated metal products | 2007 | Unaudited abridged |
| AYCLIFFE FILTRATION LIMITED | Other manufacturing | 2009 | Unaudited abridged |
| PW MARINE LIMITED | Repair and installation of machinery | 2009 | Total exemption (full) |
| GM & DJ PICKERSGILL LIMITED | Other manufacturing | 2009 | Total exemption (full) |
| GECOMAC LIMITED | Fabricated metal products | 2010 | Total exemption (full) |
| EDGAR F SHEPHERD LTD | Wood products | 2010 | Total exemption (full) |
| KYTUN (UK) LTD | Chemicals | 2010 | Unaudited abridged |
| ACCURATE SYSTEMS LABELLING LIMITED | Printing and recorded media | 2010 | Total exemption (full) |