| GREENS LIMITED | Printing and recorded media | 1920 | Full accounts |
| SCIAKY ELECTRIC WELDING MACHINES LIMITED | Machinery and equipment | 1934 | Total exemption (full) |
| FROZEN BROTHERS LIMITED | Beverages | 1945 | Full accounts |
| VERCO OFFICE FURNITURE LIMITED | Furniture | 1945 | Full accounts |
| THE TARTAN MANUFACTURING COMPANY LIMITED | Fabricated metal products | 1947 | Total exemption (full) |
| AIRFLOW DEVELOPMENTS LIMITED | Electrical equipment | 1955 | Group accounts |
| OXFORD INSTRUMENTS NANOTECHNOLOGY TOOLS LIMITED | Computers, electronics and optics | 1961 | Full accounts |
| S.R.S. JOINERY (HIGH WYCOMBE) LIMITED | Wood products | 1962 | Total exemption (full) |
| AVERY DENNISON U.K. LIMITED | Paper and paperboard | 1963 | Full accounts |
| PANDECT PRECISION COMPONENTS LIMITED | Computers, electronics and optics | 1964 | Total exemption (full) |
| REID & SEYMOUR LIMITED | Fabricated metal products | 1965 | Unaudited abridged |
| REPUBLIC TECHNOLOGIES (UK) LIMITED | Tobacco products | 1966 | Full accounts |
| OPTIMA PRODUCTS LIMITED | Fabricated metal products | 1971 | Full accounts |
| SOUTH BUCKS BUSINESS PRODUCTS LIMITED | Printing and recorded media | 1971 | Total exemption (full) |
| OXFORD INSTRUMENTS INDUSTRIAL PRODUCTS LIMITED | Computers, electronics and optics | 1972 | Total exemption (full) |
| W. DURSTON LIMITED | Machinery and equipment | 1974 | Total exemption (full) |
| MICROTECH ELECTRONICS LIMITED | Computers, electronics and optics | 1974 | Total exemption (full) |
| ALAN SPARGO LIMITED | Fabricated metal products | 1975 | Total exemption (full) |
| E. & R. MEAKES LIMITED | Fabricated metal products | 1976 | Total exemption (full) |
| COSTA LIMITED | Food products | 1976 | Full accounts |
| PORTAPROMPT LIMITED | Electrical equipment | 1976 | Unaudited abridged |
| ADCAL LABELS LIMITED | Printing and recorded media | 1977 | Total exemption (full) |
| D.R.J. ENGINEERING COMPANY LIMITED | Fabricated metal products | 1977 | Unaudited abridged |
| BALFORM LIMITED | Other manufacturing | 1978 | Total exemption (full) |
| BWT UK LIMITED | Electrical equipment | 1978 | Full accounts |
| DAVISON HIGHLEY LIMITED | Furniture | 1979 | Total exemption (full) |
| HYDROKEM AEROSOLS LIMITED | Other manufacturing | 1979 | Full accounts |
| ENVIROTEC LIMITED | Machinery and equipment | 1980 | Total exemption (full) |
| SPECTRUM HOSE LIMITED | Other manufacturing | 1982 | Total exemption (full) |
| HURCO EUROPE LIMITED | Machinery and equipment | 1982 | Full accounts |
| WOODWASTE CONTROL ENGINEERING LIMITED | Machinery and equipment | 1983 | Total exemption (full) |
| ZED ENGINEERED SYSTEMS LIMITED | Computers, electronics and optics | 1983 | Small company accounts |
| SPECK PUMPS (UK) LIMITED | Machinery and equipment | 1984 | Total exemption (full) |
| INTERFORM MANUFACTURING LIMITED | Rubber and plastics | 1984 | Unaudited abridged |
| VALLEY SYSTEMS LIMITED | Computers, electronics and optics | 1984 | Total exemption (full) |
| ARKRAY FACTORY LTD. | Other manufacturing | 1985 | Small company accounts |
| IMAGINEERS LIMITED | Rubber and plastics | 1985 | Total exemption (full) |
| MEDIPLUS LIMITED | Other manufacturing | 1986 | Audit-exempt subsidiary |
| SABETI WAIN AEROSPACE LIMITED | Other manufacturing | 1987 | Full accounts |
| WELLAND MEDICAL LIMITED | Other manufacturing | 1987 | Full accounts |
| N.A. BROWN LIMITED | Other manufacturing | 1987 | Total exemption (full) |
| BLOWPLAST LIMITED | Rubber and plastics | 1988 | Full accounts |
| JEFFARK ENGINEERING AND METAL PRESSINGS LIMITED | Fabricated metal products | 1988 | Total exemption (full) |
| SPOT ON DIGITAL IMAGING LIMITED | Printing and recorded media | 1988 | Total exemption (full) |
| FOCUSRITE AUDIO ENGINEERING LIMITED | Computers, electronics and optics | 1989 | Audit-exempt subsidiary |
| ENERGIZER AUTO UK LIMITED | Chemicals | 1989 | Medium company accounts |
| D. C. PRODUCTS LIMITED | Other manufacturing | 1989 | Unaudited abridged |
| SPIRA U.K. LIMITED | Other manufacturing | 1989 | Total exemption (full) |
| SYNERGY FLAVOURS LIMITED | Chemicals | 1989 | Full accounts |
| DEETER ELECTRONICS LTD. | Other manufacturing | 1991 | Total exemption (full) |
| WATERROWER (UK) LTD. | Other manufacturing | 1991 | Full accounts |
| STREAMDOWN LIMITED | Printing and recorded media | 1991 | Total exemption (full) |
| CAREFLEX LIMITED | Furniture | 1991 | Small company accounts |
| STUART INTERNATIONAL LIMITED | Machinery and equipment | 1992 | Unaudited abridged |
| GRID DEFENCE SYSTEMS LIMITED | Computers, electronics and optics | 1993 | Total exemption (full) |
| PRIME METALS LIMITED | Fabricated metal products | 1993 | Total exemption (full) |
| EXCEL PACKAGING & INSULATION CO. LIMITED | Fabricated metal products | 1994 | Total exemption (full) |
| MBD FOODS LIMITED | Food products | 1994 | Total exemption (full) |
| TS DESIGNS LIMITED | Other manufacturing | 1995 | Total exemption (full) |
| GREENS PRINTING SERVICES LIMITED | Printing and recorded media | 1996 | Small company accounts |