| COOPER WARD LIMITED | Reading | 1984 | Total exemption (full) |
| WEBB-ELEC LIMITED | Willenhall | 1984 | Total exemption (full) |
| PRAS GOTH LIMITED | Cornwall | 1984 | Total exemption (full) |
| ORBITAL GAS SYSTEMS LIMITED | Near Stone | 1984 | Full accounts |
| CAPTEC LIMITED | Fareham | 1984 | Full accounts |
| THE MTL INSTRUMENTS GROUP LIMITED | Luton | 1984 | Small company accounts |
| C-SCOPE INTERNATIONAL HOLDINGS LIMITED | Wotton Road, Ashford | 1984 | Total exemption (full) |
| DEVA ELECTRONIC CONTROLS LIMITED | Birkenhead | 1985 | Total exemption (full) |
| LOGITECH ELECTRONICS LIMITED | Newport | 1985 | Total exemption (full) |
| CAIRN RESEARCH LIMITED | Faversham | 1985 | Total exemption (full) |
| NEO ELECTRONICS LIMITED | Bury | 1985 | Total exemption (full) |
| ELTEK LIMITED | Royston | 1985 | Total exemption (full) |
| WILTAN LIMITED | Pontypool | 1985 | Total exemption (full) |
| KINGFIELD ELECTRONICS LIMITED | Chesterfield | 1985 | Full accounts |
| LIGHT PROJECTS LIMITED | Billericay | 1985 | Total exemption (full) |
| MOTOR TECHNOLOGY LTD. | Stockport | 1985 | Unaudited abridged |
| FELLER (UK) LIMITED | South Shields, | 1985 | Small company accounts |
| ANYTRONICS LIMITED | Horndean | 1985 | Total exemption (full) |
| TRI CONTROL SYSTEMS LTD | Uxbridge | 1985 | Total exemption (full) |
| RADIOMETRIX LIMITED | Harrow | 1985 | Total exemption (full) |
| MOLD MASTERS (UK) LIMITED | Hereford | 1985 | Full accounts |
| AB CONNECTORS LIMITED | Rhondda Cynon Taff | 1985 | Full accounts |
| SURREY SATELLITE TECHNOLOGY LIMITED | Guildford | 1985 | Full accounts |
| CONCURRENT TECHNOLOGIES PLC | Colchester | 1985 | Group accounts |
| PHOENIX CONTACT LIMITED | Shropshire | 1985 | Full accounts |
| HITEK ELECTRONIC MATERIALS LIMITED | Newcastle upon Tyne | 1985 | Small company accounts |
| DATEL ELECTRONICS LIMITED | Stone | 1985 | Total exemption (full) |
| JTL SYSTEMS LIMITED | Newbury | 1985 | Total exemption (full) |
| SCHULTE AND LOUGHBOROUGH ELECTRO SYSTEMS LIMITED | Bath | 1985 | Small company accounts |
| DATA HARVEST GROUP LIMITED | Leighton Buzzard | 1985 | Total exemption (full) |
| CAMPBELL SCIENTIFIC LIMITED | Loughborough | 1985 | Group accounts |
| D & K WIRING SERVICES LIMITED | Dunstable | 1985 | Total exemption (full) |
| THANEHALL LIMITED | Norfolk | 1985 | Total exemption (full) |
| BARTINGTON INSTRUMENTS LIMITED | Witney | 1985 | Full accounts |
| COMMUNICATIONS AUDIT UK LIMITED | Cheltenham | 1985 | Total exemption (full) |
| FREQUENCY PRECISION LIMITED | Newton Abbot | 1985 | Total exemption (full) |
| FLOW CALIBRATION SERVICES LIMITED | Ely | 1985 | Unaudited abridged |
| TURBINE CONTROLS LIMITED | Leicester | 1985 | Total exemption (full) |
| TEMPO EUROPE LIMITED | Cardiff | 1985 | Small company accounts |
| COURTYARD ELECTRONICS LIMITED | Swansea | 1985 | Total exemption (full) |
| DYNOPTIC SYSTEMS LIMITED | Banbury | 1985 | Small company accounts |
| TELEDYNE VALEPORT LIMITED | Chelmsford | 1985 | Full accounts |
| ENVIRODYNE HOLDINGS LIMITED | London | 1985 | Group accounts |
| RUSS ANDREWS ACCESSORIES LTD. | Kendal | 1985 | Total exemption (full) |
| M. & A. PACKAGING SERVICES LIMITED | Worcestershire | 1985 | Total exemption (full) |
| TV ONE LIMITED | Margate | 1985 | Full accounts |
| SAMTEC (EUROPE) LIMITED | Glasgow | 1986 | Full accounts |
| ECONOTECH LIMITED | Horsham | 1986 | Total exemption (full) |
| ALISON MICROWAVE LIMITED | Norwich | 1986 | Total exemption (full) |
| APACHE SOLUTIONS LIMITED | Stevenage | 1986 | Unaudited abridged |
| TECFLO LIMITED | Worsley | 1986 | Unaudited abridged |
| POLLUTION MONITORS LIMITED | Wallingford | 1986 | Total exemption (full) |
| KEYMAT TECHNOLOGY LIMITED | Guildford | 1986 | Small company accounts |
| NIKON X-TEK SYSTEMS LIMITED | Tring | 1986 | Full accounts |
| G.K. SERVICES LIMITED | Dunstable | 1986 | Total exemption (full) |
| PAVECOST MANUFACTURING LIMITED | Newport | 1986 | Total exemption (full) |
| HAMLET VIDEO INTERNATIONAL LIMITED | Harrow | 1986 | Total exemption (full) |
| TRAC COMMUNICATIONS LIMITED | South Bank | 1986 | Total exemption (full) |
| SILVERTRONIC LIMITED | Hoddesdon | 1986 | Unaudited abridged |
| METEOR COMMUNICATIONS (EUROPE) LIMITED | St Albans | 1986 | Total exemption (full) |