| PHOENIX INSPECTION SYSTEMS LIMITED | Altrincham | 1983 | Small company accounts |
| BIZERBA (U.K.) LIMITED | Milton Keynes | 1983 | Full accounts |
| PROCTER AND CHESTER (MEASUREMENTS) LIMITED | Kenilworth | 1983 | Total exemption (full) |
| CURA TERRAE AIR LIMITED | Sheffield | 1983 | Small company accounts |
| CORNELIUS ELECTRONICS LIMITED | West Glamorgan | 1983 | Medium company accounts |
| ELCOMETER LIMITED | — | 1983 | Group accounts |
| DANTEC DYNAMICS LIMITED | Altrincham | 1983 | Small company accounts |
| THERMO ELECTRON LIMITED | Altrincham | 1983 | Full accounts |
| CHELMERLAND LIMITED | Sandown | 1983 | Total exemption (full) |
| CENTERPRISE INTERNATIONAL LIMITED | Basingstoke | 1983 | Full accounts |
| N.E.M. CO. LIMITED | Hertfordshire | 1983 | Medium company accounts |
| B I COMMUNICATIONS LIMITED | Essex | 1983 | Total exemption (full) |
| KENTECH INSTRUMENTS LIMITED | Wallingford | 1983 | Total exemption (full) |
| M.R.G. SYSTEMS LIMITED | Stonehouse | 1983 | Total exemption (full) |
| HEBER LIMITED | Stroud | 1983 | Total exemption (full) |
| ELECTRONIC TEMPERATURE INSTRUMENTS LIMITED | Worthing | 1983 | Full accounts |
| MANTRACOURT ELECTRONICS LIMITED | Exeter | 1983 | Small company accounts |
| ALCATEL SUBMARINE NETWORKS UK LTD | Greenwich | 1983 | Full accounts |
| U.K. ELECTRONICS LIMITED | Royton | 1983 | Total exemption (full) |
| LINETOP LIMITED | Newport | 1983 | Total exemption (full) |
| CIRCATRON LTD | Tonbridge | 1983 | Total exemption (full) |
| SCOPE COMMUNICATIONS UK LIMITED | Totnes | 1983 | Total exemption (full) |
| YEOVIL CIRCUITS LIMITED | Yeovil | 1983 | Total exemption (full) |
| RG LUMA AUTOMATION LTD | Worcester | 1983 | Total exemption (full) |
| EUROQUARTZ LIMITED | Somerset | 1983 | Total exemption (full) |
| ZED ENGINEERED SYSTEMS LIMITED | High Wycombe | 1983 | Small company accounts |
| ATLAS ALARMS LIMITED | Blackburn | 1983 | Total exemption (full) |
| NORTHERN HI-TEC LIMITED | Lancaster | 1983 | Total exemption (full) |
| ESCATEC MECHATRONICS LIMITED | Lutterworth | 1983 | Full accounts |
| UNITEMP LIMITED | London | 1984 | Total exemption (full) |
| BIFOLD FLUIDPOWER LIMITED | Bath | 1984 | Audit-exempt subsidiary |
| TSC SUBSEA LTD | London | 1984 | Small company accounts |
| SOUTHERN SCIENTIFIC LIMITED | Henfield | 1984 | Medium company accounts |
| ELECREF LIMITED | Humberston Grimsby | 1984 | Total exemption (full) |
| VICON MOTION SYSTEMS LIMITED | Yarnton | 1984 | Audit-exempt subsidiary |
| LIQUID LEVEL SYSTEMS LIMITED | West Sussex | 1984 | Total exemption (full) |
| BERAN INSTRUMENTS LIMITED | N.devon | 1984 | Small company accounts |
| MICROSS COMPONENTS LIMITED | Norwich | 1984 | Full accounts |
| SPANTECH PRODUCTS LIMITED | London | 1984 | Total exemption (full) |
| ST. CROSS ELECTRONICS LIMITED | Eastleigh | 1984 | Total exemption (full) |
| APOLLOTEK LIMITED | Sunbury | 1984 | Total exemption (full) |
| SHIN-ETSU HANDOTAI EUROPE LIMITED | Livingston | 1984 | Full accounts |
| PEAK PRODUCTION EQUIPMENT LIMITED | London | 1984 | Total exemption (full) |
| LOGICOM COMMUNICATIONS LIMITED | Middlesex | 1984 | Total exemption (full) |
| CIRCUIT HYDRAULICS LIMITED | Liverpool | 1984 | Total exemption (full) |
| ADDER TECHNOLOGY LIMITED | Leicester | 1984 | Group accounts |
| A.B.I. ELECTRONICS LIMITED | Barnsley | 1984 | Total exemption (full) |
| IDEAL INDUSTRIES LIMITED | Warrington | 1984 | Full accounts |
| GEMINI DATA LOGGERS (U.K.) LIMITED | Chichester | 1984 | Total exemption (full) |
| M.C.H. ELECTRICAL SYSTEMS LIMITED | Willenhall | 1984 | Total exemption (full) |
| MULTIPULSE ELECTRONICS LIMITED | Farnham | 1984 | Total exemption (full) |
| BEKA ASSOCIATES LIMITED | Hertfordshire | 1984 | Small company accounts |
| LASER S.O.S. LIMITED | St Ives | 1984 | Total exemption (full) |
| CIRRUS LOGIC INTERNATIONAL (UK) LTD | Edinburgh | 1984 | Full accounts |
| ISOMET (UK) LIMITED | Cwmbran | 1984 | Small company accounts |
| KNITTER-SWITCH UK LIMITED | Basingstoke | 1984 | Total exemption (full) |
| QUALITY MONITORING INSTRUMENTS LIMITED | London | 1984 | Total exemption (full) |
| VALLEY SYSTEMS LIMITED | High Wycombe | 1984 | Total exemption (full) |
| COGENT TECHNOLOGY LIMITED | Ipswich | 1984 | Small company accounts |
| P A COMMUNICATIONS LIMITED | Leighton Buzzard | 1984 | Total exemption (full) |