| MAX WRIGHT LIMITED | Thundridge | 1967 | Total exemption (full) |
| ELECTRONIC MODULAR SERVICES LIMITED | Sea Street Herne Bay | 1967 | Full accounts |
| BAUGH & WEEDON LIMITED | Hereford | 1967 | Total exemption (full) |
| ELDON ELECTRIC LIMITED | Sheffield | 1967 | Full accounts |
| TRIDENT ENGINEERING LIMITED | Reading | 1968 | Total exemption (full) |
| MONARCH KNITTING MACHINERY (U.K.) LIMITED | Leicester | 1968 | Group accounts |
| GOODBURN ENGINEERING LIMITED | Wokingham | 1968 | Total exemption (full) |
| BLE LIGHTING AND POWER LIMITED | Sheffield | 1968 | Total exemption (full) |
| R.HAMILTON & CO. LIMITED | Watford | 1968 | Medium company accounts |
| DALE POWER SOLUTIONS LIMITED | Scarborough | 1968 | Full accounts |
| INGRID WEST MACHINERY LIMITED | Tewkesbury | 1968 | Total exemption (full) |
| TECHNICAL CONTROL SYSTEMS LIMITED | Gildersome | 1969 | Audit-exempt subsidiary |
| CARLING TECHNOLOGIES LIMITED | Clyst Honiton | 1969 | Full accounts |
| CPI TMD TECHNOLOGIES LIMITED | Middlesex | 1969 | Full accounts |
| TAXRALE ELECTRICS LIMITED | Wolverhampton | 1969 | Total exemption (full) |
| PRYSMIAN CABLES & SYSTEMS LIMITED | Hampshire | 1969 | Full accounts |
| HOTLINE-HORIZONT LTD | Newton Abbot | 1969 | Small company accounts |
| PRECISION RELAYS LIMITED | Edinburgh | 1969 | Total exemption (full) |
| HEATHEROSE LIMITED | Sleaford | 1969 | Total exemption (full) |
| ELSTEAD LIGHTING LIMITED | Alton | 1969 | Full accounts |
| TEKDATA INTERCONNECTIONS LIMITED | Scunthorpe | 1969 | Full accounts |
| TEMPERATURE ELECTRONICS LIMITED | Glossop | 1969 | Small company accounts |
| D.K. MORIARTY LIMITED | Loughborough | 1970 | Total exemption (full) |
| OPTIKINETICS LIMITED | Bedfordshire | 1970 | Total exemption (full) |
| CABLEX UK TRADE LTD | Bungay | 1970 | Small company accounts |
| ALAN ELECTRICAL LIMITED | Watford | 1971 | Total exemption (full) |
| KANE ENGINEERING LIMITED | Newtownards | 1971 | Total exemption (full) |
| MID KENT ELECTRICAL ENGINEERING COMPANY LIMITED | Sittingbourne | 1971 | Full accounts |
| STEON LTD | Burnley | 1971 | Total exemption (full) |
| Q.A.ELECTRICAL PRODUCTS LIMITED | Walsall | 1971 | Audit-exempt subsidiary |
| BRANSDEN ELECTRONICS LIMITED | Maidstone | 1971 | Total exemption (full) |
| TFC CABLE ASSEMBLIES LIMITED | Glasgow | 1971 | Small company accounts |
| KELVIN HUGHES LIMITED | Enfield | 1971 | Full accounts |
| K.LACEY(ENGINEERS & DESIGNERS)LIMITED | Littlehampton | 1971 | Total exemption (full) |
| FDB ELECTRICAL LIMITED | Wellingborough | 1971 | Full accounts |
| CHEMIGRAPHIC LIMITED | Crawley | 1972 | Full accounts |
| R. STAHL LIMITED | Peterborough | 1972 | Full accounts |
| NITTAN EUROPE LIMITED | Old Woking | 1972 | Small company accounts |
| STEPHENSON GOBIN LIMITED | Tyne and Wear | 1972 | Audit-exempt subsidiary |
| CUSTOM TRANSFORMERS LIMITED | Malmesbury | 1972 | Total exemption (full) |
| CRESSALL RESISTORS LIMITED | — | 1972 | Full accounts |
| HOLROYD COMPONENTS LIMITED | Essex | 1972 | Full accounts |
| BURNELL CONTROLS (KENT) LIMITED | Dartford | 1973 | Total exemption (full) |
| J. A. MICHELL ENGINEERING LIMITED | Stevenage | 1973 | Total exemption (full) |
| VENT-AXIA GROUP LIMITED | West Sussex | 1973 | Audit-exempt subsidiary |
| N.J.FROMENT & CO.LIMITED | London | 1973 | Full accounts |
| NDE SOLUTIONS LIMITED | St Austell | 1973 | Full accounts |
| UCONTROL LIMITED | West Midlands | 1973 | Total exemption (full) |
| SHIELD BATTERIES LIMITED | Hertfordshire | 1973 | Total exemption (full) |
| REMORA ELECTRICAL LIMITED | Barnsley | 1973 | Total exemption (full) |
| REGA RESEARCH LIMITED | Southend-on-Sea | 1973 | Full accounts |
| ENGINEERING DISTRIBUTORS LIMITED | — | 1973 | Total exemption (full) |
| T C LIMITED | London | 1973 | Group accounts |
| G.E. MITCHELL (ELECTRICAL) LIMITED | Brighouse | 1973 | Total exemption (full) |
| FORMA LIGHTING LIMITED | Mitcham | 1973 | Total exemption (full) |
| INSTRUMENT TRANSFORMERS LIMITED | Glasgow | 1973 | Total exemption (full) |
| RADIOCONTACT LIMITED | Belfast | 1973 | Small company accounts |
| AIRDRI LIMITED | Eynsham | 1974 | Small company accounts |
| DOYLE & TRATT PRODUCTS LIMITED | Redhill | 1974 | Total exemption (full) |
| AMBEX LIMITED | Hove | 1974 | Total exemption (full) |