| ALPHA 3 MANUFACTURING LIMITED | Scunthorpe | 1972 | Full accounts |
| CABOT COMPANY LIMITED | Edgware | 1972 | Total exemption (full) |
| LEMO (U.K.) LIMITED | Worthing | 1972 | Full accounts |
| DATA PHYSICS (UK) LIMITED | Tunbridge Wells | 1973 | Small company accounts |
| OTICON LIMITED | Birmingham | 1973 | Full accounts |
| LINN PRODUCTS LIMITED | Glasgow | 1973 | Group accounts |
| PULSAR INSTRUMENTS PLC | Filey | 1973 | Full accounts |
| EUROTEC INTERNATIONAL PLC | Greatham | 1973 | Full accounts |
| UNISON LIMITED | Scarborough | 1973 | Unaudited abridged |
| KISTLER INSTRUMENTS LIMITED | Hook | 1973 | Small company accounts |
| RENISHAW P L C | Gloucestershire | 1973 | Group accounts |
| BIODATA LIMITED | — | 1973 | Total exemption (full) |
| MARL INTERNATIONAL LIMITED | Cumbria | 1973 | Full accounts |
| AIRFLOW MEASUREMENTS LIMITED | Manchester | 1973 | Total exemption (full) |
| TESTOMETRIC COMPANY LIMITED(THE) | Rochdale | 1973 | Total exemption (full) |
| NAIM AUDIO LIMITED | Wiltshire | 1973 | Group accounts |
| SEMTECH LIMITED | Edinburgh | 1973 | Full accounts |
| PEPPERL+FUCHS GB LTD | — | 1973 | Medium company accounts |
| F. BAMFORD (INSTRUMENTS) LIMITED | Stockport-Cheshire | 1973 | Total exemption (full) |
| LECO INSTRUMENTS (U.K.) LIMITED | Nether Alderley | 1973 | Small company accounts |
| HVR PENTAGON LIMITED | Jarrow | 1973 | Small company accounts |
| HECH ENGINEERING LIMITED | Bedlington | 1973 | Total exemption (full) |
| C. & P. ENGINEERING SERVICES LIMITED | Swansea | 1973 | Total exemption (full) |
| SICK (UK) LTD. | Hertfordshire | 1973 | Full accounts |
| WICKS AND WILSON LIMITED | Basingstoke | 1973 | Total exemption (full) |
| GRADKO INTERNATIONAL LIMITED | Winchester | 1973 | Total exemption (full) |
| CURTIS INSTRUMENTS (U.K.) LIMITED | Hebburn | 1974 | Group accounts |
| COLUMBIA-STAVER LIMITED | Wickford | 1974 | Total exemption (full) |
| KULITE SENSORS LIMITED | Basingstoke | 1974 | Small company accounts |
| L & N RADIO LIMITED | West Malling | 1974 | Total exemption (full) |
| S.A.C. ELECTRONICS LIMITED | Nottingham | 1974 | Small company accounts |
| ASTECH ELECTRONICS LIMITED | Binsted | 1974 | Total exemption (full) |
| CHURCHILL CONTROLS LIMITED | Stevenage | 1974 | Total exemption (full) |
| L.C. AUTOMATION LIMITED | Plymouth | 1974 | Total exemption (full) |
| TICINO-DESINEX LIMITED | Fleet | 1974 | Total exemption (full) |
| BLACKWATER PHOTOGRAPHIC COMPANY LIMITED | Fleet | 1974 | Total exemption (full) |
| PROTEC FIRE DETECTION PUBLIC LIMITED COMPANY | Lomeshaye Ind Est | 1974 | Full accounts |
| EAGLE CONTROLS INTERNATIONAL LIMITED | Royston | 1974 | Total exemption (full) |
| PANASONIC MANUFACTURING U.K. LTD. | Cardiff | 1974 | Full accounts |
| GOSS SCIENTIFIC INSTRUMENTS LIMITED | Crewe | 1974 | Small company accounts |
| A F SWITCHGEAR LIMITED | Sutton in Ashfield | 1974 | Full accounts |
| DANTECH ELECTRONIC ENGINEERING LIMITED | Maldon | 1974 | Total exemption (full) |
| TATE CIRCUIT INDUSTRIES LIMITED | Lichfield | 1974 | Total exemption (full) |
| MICHELL INSTRUMENTS LIMITED | Cambridgeshire | 1974 | Full accounts |
| NIXON FLOWMETERS LIMITED | Cheltenham | 1974 | Total exemption (full) |
| MICROTECH ELECTRONICS LIMITED | High Wycombe | 1974 | Total exemption (full) |
| DIFFUSION SYSTEMS LIMITED | London | 1974 | Unaudited abridged |
| OPTIMUM SAFETY SYSTEMS LIMITED | Bradford | 1974 | Total exemption (full) |
| A.G.W. ELECTRONICS LIMITED | Ditchling | 1974 | Small company accounts |
| BENTHAM INSTRUMENTS LIMITED | Reading | 1975 | Total exemption (full) |
| GLENAIR UK LIMITED | Mansfield | 1975 | Group accounts |
| LANDIS + GYR LIMITED | Manchester | 1975 | Full accounts |
| TECTIME DATA SYSTEMS LIMITED | Stoke-on-Trent | 1975 | Total exemption (full) |
| PANORAMA ANTENNAS LIMITED | London | 1975 | Medium company accounts |
| BKW INSTRUMENTS LIMITED | Manchester | 1975 | Total exemption (full) |
| HARFORD CONTROL LIMITED | Wilts | 1975 | Total exemption (full) |
| PSM INSTRUMENTATION LIMITED | West Sussex | 1975 | Small company accounts |
| CAT PUMPS (U.K.) LIMITED | Weybridge | 1975 | Small company accounts |
| STONEGROVE LTD. | Kent | 1975 | Full accounts |
| FLOWBIRD TRANSPORT LIMITED | Poole | 1975 | Full accounts |