| DESMI LIMITED | Tunstall | 1978 | Small company accounts |
| PYROBAN LIMITED | Shoreham-by-Sea | 1978 | Full accounts |
| CLARKE BROS. LIMITED | Woodhouses, Failsworth | 1978 | Total exemption (full) |
| BAC CORROSION CONTROL LIMITED | Salop | 1978 | Small company accounts |
| PROCESS MACHINERY LIMITED | Hitchin | 1978 | Unaudited abridged |
| ERIEZ MAGNETICS EUROPE LIMITED | Caerphilly | 1978 | Full accounts |
| CYKLOP (UK) LIMITED | St Neots | 1978 | Small company accounts |
| MCNAIR ENGINEERING LIMITED | Glasgow | 1978 | Total exemption (full) |
| AUTOBOND LIMITED | Heanor | 1978 | Total exemption (full) |
| LUMETER LIMITED | West Midlands | 1978 | Total exemption (full) |
| OSHKOSH AEROTECH UK LIMITED | Cardiff | 1978 | Full accounts |
| FOSTER & FREEMAN LIMITED | Evesham | 1978 | Full accounts |
| TELSONIC (U.K.) LIMITED | Poole | 1978 | Small company accounts |
| F. MURDOCH REFRACTORY CONSTRUCTION LIMITED | Sheffield | 1978 | Total exemption (full) |
| CONDUCTIX-WAMPFLER LTD | Salford | 1978 | Small company accounts |
| COMAR ENGINEERING SERVICES LIMITED | Coventry | 1978 | Total exemption (full) |
| A.T. JUNIPER (LIVERPOOL) LIMITED | Prenton | 1978 | Unaudited abridged |
| ARBIL LIMITED | Stourbridge | 1978 | Small company accounts |
| GORMLEYS ENGINEERING WORKS LIMITED | Co Tyrone | 1979 | Total exemption (full) |
| UNWIN HYDRAULIC ENGINEERING LIMITED | Swadlincote | 1979 | Total exemption (full) |
| T.W. HAMILTON DESIGN LIMITED | Maidenhead | 1979 | Total exemption (full) |
| CONTACT ATTACHMENTS LIMITED | Powys | 1979 | Total exemption (full) |
| SUBMARINE TECHNOLOGY LIMITED | Aberdeenshire | 1979 | Small company accounts |
| HELLER MACHINE TOOLS LIMITED | Worcestershire | 1979 | Full accounts |
| BALCO ENGINEERING LIMITED | Birmingham | 1979 | Total exemption (full) |
| RGE TOOLING LIMITED | St. Ives | 1979 | Small company accounts |
| IMI WEBBER LIMITED | Birmingham | 1979 | Audit-exempt subsidiary |
| HYDRIL PCB LIMITED | London | 1979 | Full accounts |
| HEAVYPARTS HYDRAULICS LIMITED | Rochdale | 1979 | Total exemption (full) |
| NETZSCH MASTERMIX LIMITED | Lichfield | 1979 | Small company accounts |
| OLIVER VALVES LIMITED | Cheshire | 1979 | Full accounts |
| KENNEDY GRINDING LIMITED | Sheffield | 1979 | Small company accounts |
| A.A. HENTON & SON (STEEL FABRICATIONS) LIMITED | Twycross,atherstone, | 1979 | Total exemption (full) |
| PHILFORD DESIGN ENGINEERS LIMITED | Rotherham | 1979 | Total exemption (full) |
| ECE UK LIMITED | Wrotham Heath | 1979 | Unaudited abridged |
| OAKHINGE LIMITED | Walsall | 1979 | Total exemption (full) |
| SPECIALISED HARVESTING SERVICES LIMITED | Doncaster | 1979 | Total exemption (full) |
| POCLAIN HYDRAULICS LIMITED | Peterborough | 1979 | Small company accounts |
| MITUTOYO (U.K.) LIMITED | Hampshire | 1979 | Full accounts |
| GEORGE COLLIAR LTD | — | 1979 | Small company accounts |
| AGRICULTURAL HARVEST STORE INSTALLATIONS LIMITED | Faversham | 1979 | Total exemption (full) |
| ADM AUTOMATION LIMITED | Gateshead | 1979 | Small company accounts |
| RAPID INTERNATIONAL LIMITED | Co Armagh | 1979 | Full accounts |
| I. AND G. ENGINEERING LIMITED | Neath | 1979 | Total exemption (full) |
| THERMOREG INTERNATIONAL LIMITED | Mildenhall | 1979 | Total exemption (full) |
| H.M.K. TECHNICAL SERVICES LIMITED | Congleton | 1979 | Total exemption (full) |
| CISTERMISER LIMITED | Leeds | 1979 | Small company accounts |
| GLOBAL DIGITAL SYSTEMS LIMITED | London | 1979 | Full accounts |
| SCALES, SPARES & SERVICES LIMITED | Mirfield | 1979 | Total exemption (full) |
| HWM-WATER LIMITED | Cwmbran | 1979 | Full accounts |
| VEOLIA WATER PURIFICATION SYSTEMS LTD. | Altrincham | 1979 | Small company accounts |
| AIR HANDLING EQUIPMENT LIMITED | Merseyside | 1979 | Total exemption (full) |
| HIDROSTAL LIMITED | Castleford | 1979 | Audit-exempt subsidiary |
| DRILLSERVE LIMITED | Camborne | 1979 | Total exemption (full) |
| YUKEN EUROPE LTD | Liverpool | 1979 | Group accounts |
| WICKS ENGINEERING CO. LIMITED | Leeds | 1980 | Total exemption (full) |
| COMBICUT LIMITED | Reading | 1980 | Total exemption (full) |
| VAPORMATT LIMITED | Bridgwater | 1980 | Small company accounts |
| BSA TUBE RUNNER LIMITED | Southampton | 1980 | Total exemption (full) |
| CENTRI-FORCE ENGINEERING LTD | Glasgow | 1980 | Small company accounts |