| LAZERBUILT LIMITED | Stevenage | 1981 | Total exemption (full) |
| J E SUGDEN & CO. LIMITED | Heckmondwike West Yorkshire | 1981 | Total exemption (full) |
| MEASUREMENT SYSTEMS LIMITED | Berkshire | 1981 | Total exemption (full) |
| TECHNOLOG LIMITED | Leicester | 1981 | Full accounts |
| A.C.S. INDUSTRIES LIMITED | Billinghurst | 1981 | Total exemption (full) |
| AUTONNIC RESEARCH LIMITED | London | 1981 | Total exemption (full) |
| DRUCK LIMITED | Leicestershire | 1981 | Full accounts |
| LION LABORATORIES LIMITED | Barry | 1981 | Full accounts |
| CAPITA SECURE INFORMATION SOLUTIONS LIMITED | London | 1981 | Total exemption (full) |
| J.C. DESIGNS LIMITED | Writtle | 1981 | Total exemption (full) |
| TITAN ENTERPRISES LIMITED | Sherborne | 1981 | Total exemption (full) |
| P.S. ANALYTICAL LIMITED | Orpington | 1981 | Total exemption (full) |
| ENGINEERING MICROSYSTEMS LIMITED | Surrey | 1981 | Total exemption (full) |
| EUROTECH LTD | Bishop’s Stortford | 1982 | Full accounts |
| DATAPATH LIMITED | Derby | 1982 | Full accounts |
| HYDRONIX LIMITED | Guildford | 1982 | Total exemption (full) |
| STRAIN MEASUREMENT DEVICES LIMITED | Bury St Edmunds | 1982 | Small company accounts |
| J.A.M. LIMITED | Rayleigh | 1982 | Total exemption (full) |
| ROADRUNNER ELECTRONIC PRODUCTS LIMITED | Liphook | 1982 | Total exemption (full) |
| REVIEW DISPLAY SYSTEMS LIMITED | Basingstoke | 1982 | Full accounts |
| J.S.T. (U.K.) LIMITED | Suffolk | 1982 | Full accounts |
| MURATA POWER SOLUTIONS (MILTON KEYNES) LIMITED | Milton Keynes | 1982 | Full accounts |
| MICROTROL LIMITED | Hallow Worcester | 1982 | Unaudited abridged |
| AUTOMATED WATER & EFFLUENT LIMITED | Beaconside | 1982 | Unaudited abridged |
| COTSWOLD MICRO SYSTEMS LIMITED | — | 1982 | Total exemption (full) |
| CML MICROCIRCUITS (UK) LIMITED | Langford, Maldon | 1982 | Full accounts |
| ELECTRONIC AND ENGRAVING SERVICES LIMITED | Hellaby | 1982 | Total exemption (full) |
| LARONTROL LIMITED | Littlehampton | 1982 | Small company accounts |
| VEGA CONTROLS LIMITED | Maresfield | 1982 | Full accounts |
| E C M SYSTEMS LIMITED | London | 1982 | Full accounts |
| CLIMATEC SYSTEMS LIMITED | Ledbury | 1982 | Total exemption (full) |
| CONTOUR FINE TOOLING LIMITED | Stevenage | 1982 | Small company accounts |
| SOLUMETRIX LIMITED | Coventry | 1982 | Total exemption (full) |
| SKC LIMITED | Blandford Forum | 1982 | Small company accounts |
| LAND INSTRUMENTS INTERNATIONAL LIMITED | Leicester | 1982 | Full accounts |
| NEWBURY DATA RECORDING LIMITED | Winsford | 1982 | Total exemption (full) |
| R.S. AQUA LIMITED | Farnham | 1982 | Small company accounts |
| STAR MICRONICS EUROPE LIMITED | Aylesbury | 1982 | Full accounts |
| DATALINK ELECTRONICS LIMITED | Leicester | 1982 | Total exemption (full) |
| TREND CONTROL SYSTEMS LIMITED | Bracknell | 1982 | Full accounts |
| UPLEC INDUSTRIES LIMITED | Wrexham | 1982 | Total exemption (full) |
| LINKAM SCIENTIFIC INSTRUMENTS LIMITED | Redhill | 1982 | Medium company accounts |
| SEAWARD ELECTRONIC LIMITED | Peterlee Co Durham | 1982 | Full accounts |
| LOUGHBOROUGH PROJECTS LIMITED | Worcester | 1982 | Small company accounts |
| EXCIL ELECTRONICS LIMITED | Saffron Walden | 1982 | Audit-exempt subsidiary |
| STATUS INSTRUMENTS LIMITED | Tewkesbury | 1982 | Total exemption (full) |
| C.T. PRODUCTION LIMITED | Poole | 1982 | Total exemption (full) |
| TURBO TECHNICS LIMITED | Northampton | 1982 | Total exemption (full) |
| MARTEL INSTRUMENTS LIMITED | Stanley | 1982 | Small company accounts |
| DESIGN PROJECTS LIMITED | Stanmore | 1982 | Total exemption (full) |
| ULO OPTICS LIMITED | Stevenage | 1982 | Medium company accounts |
| R.D.P. ELECTRONICS LIMITED | Wolverhampton | 1982 | Small company accounts |
| TESTO LIMITED | Alton | 1982 | Small company accounts |
| PROLEC LIMITED | Poole | 1982 | Small company accounts |
| LASER TECHNOLOGY NORTH WEST LIMITED | Stockport | 1983 | Total exemption (full) |
| RADIO STRUCTURES LIMITED | Northampton | 1983 | Total exemption (full) |
| CYGNUS INSTRUMENTS LIMITED | Dorset | 1983 | Total exemption (full) |
| TCM DESIGN LTD | Malvern | 1983 | Total exemption (full) |
| SOUTHERN ANTENNAE LIMITED | Broadstairs | 1983 | Total exemption (full) |
| SONIFEX LIMITED | Northants | 1983 | Total exemption (full) |