| ROWLANDS-WOODHOUSE EQUIPMENT LIMITED | North Walsham | 1977 | Total exemption (full) |
| CARMICHAEL ENGINEERING LIMITED | Corby | 1977 | Total exemption (full) |
| YPS VALVES LIMITED | West Yorkshire | 1977 | Total exemption (full) |
| ADAM EQUIPMENT CO. LIMITED | Milton Keynes | 1977 | Small company accounts |
| MECHATRONIC PRODUCTION SYSTEMS LIMITED | Birmingham | 1977 | Total exemption (full) |
| DISCOVERY INDUSTRIAL SERVICES LIMITED | London | 1977 | Unaudited abridged |
| FORTRESS INTERLOCKS LIMITED | Wolverhampton | 1977 | Full accounts |
| NEIL VESSEY (STORAGE TANKS) LIMITED | Scunthorpe | 1977 | Total exemption (full) |
| J. REEVES ENGINEERING LIMITED | Braintree | 1977 | Total exemption (full) |
| BAUER KOMPRESSOREN UK LIMITED | St. Helens | 1977 | Small company accounts |
| HARPLEY ENGINEERING LIMITED | Kings Lynn | 1977 | Total exemption (full) |
| E. & L. (ERHARDT & LEIMER) LIMITED | Bradford | 1977 | Small company accounts |
| CNF PRECISION ENGINEERING LIMITED | Aylesbury | 1977 | Total exemption (full) |
| STERLING THERMAL TECHNOLOGY LIMITED | Worcester | 1977 | Full accounts |
| PLOCKMATIC GROUP UK LIMITED | Milton Keynes | 1977 | Full accounts |
| ARMSTRONG & HOLMES LIMITED | Grantham | 1977 | Total exemption (full) |
| ROCHESTER SENSORS UK LIMITED | Warwick | 1977 | Full accounts |
| VIKING PUMP HYGIENIC LTD. | London | 1977 | Full accounts |
| DON WHITLEY SCIENTIFIC LIMITED | Bingley | 1977 | Group accounts |
| PUMP TECHNICAL SERVICES LIMITED | Erith | 1977 | Total exemption (full) |
| AUDITORIA SERVICES LIMITED | Rotherham | 1977 | Unaudited abridged |
| BAILEY MORRIS LIMITED | Eaton Socon | 1977 | Small company accounts |
| B. CONWAY (MECHANICAL HANDLING) LIMITED | Oldham | 1978 | Total exemption (full) |
| TRIUMPH NEEDLE CO LIMITED | Leicester | 1978 | Total exemption (full) |
| WALLHEATH ENGINEERING LIMITED | Brierley Hill | 1978 | Total exemption (full) |
| JCB MATERIALS HANDLING LIMITED | Near Uttoxeter | 1978 | Total exemption (full) |
| BROOMFIELD CARBIDE GAUGES LIMITED | Holmfirth | 1978 | Total exemption (full) |
| SMC CORPORATION (U.K.) LIMITED | Milton Keynes | 1978 | Group accounts |
| INCAMESH FILTRATION LIMITED | Northwich | 1978 | Total exemption (full) |
| BYGGWIK (U.K.) LTD | Ludlow | 1978 | Unaudited abridged |
| KMG SYSTEMS LIMITED | Sandy | 1978 | Full accounts |
| EDWARD JACKSON ENGINEER LIMITED | Norwich | 1978 | Total exemption (full) |
| KVERNELAND GROUP UK LIMITED | St Helens | 1978 | Full accounts |
| MAJORLIFT HYDRAULIC EQUIPMENT LIMITED | Wotton-under-Edge | 1978 | Small company accounts |
| BENCHMARK WIRELINE PRODUCTS LTD. | Norwich | 1978 | Total exemption (full) |
| PAUL AND LOUGHRAN LIMITED | Consett | 1978 | Total exemption (full) |
| NOTEMACHINE UK LIMITED | Crickhowell | 1978 | Full accounts |
| SIMPLEFIT LIMITED | Southampton | 1978 | Unaudited abridged |
| GWS ENGINEERS LIMITED | Scunthorpe | 1978 | Total exemption (full) |
| VANCEBUILD LIMITED | Norwich | 1978 | Full accounts |
| WS ENGINEERING LIMITED | Leek | 1978 | Total exemption (full) |
| HARVEY WATER SOFTENERS LIMITED | Reading | 1978 | Full accounts |
| CHARLES J. MARSHALL (ABERDEEN) LIMITED | Aberdeen | 1978 | Full accounts |
| DOMINO PRINTING SCIENCES PUBLIC LIMITED COMPANY | Cambridge | 1978 | Full accounts |
| T.J.MCKENNA AND SON LIMITED | Dungannon | 1978 | Unaudited abridged |
| IVOR SEARLE LIMITED | Ely | 1978 | Full accounts |
| IDENT MACHINES LIMITED | Leicester | 1978 | Total exemption (full) |
| J.A. DAWES ENGINEERING LIMITED | Essex | 1978 | Total exemption (full) |
| UNIVERSAL FABRICATIONS (COVENTRY) LIMITED | Brierley Hill | 1978 | Total exemption (full) |
| CARBOLITE GERO LIMITED | Hope Valley | 1978 | Full accounts |
| MANN + HUMMEL VOKES-AIR LIMITED | Lancashire | 1978 | Full accounts |
| R.S. HALL ENGINEERING LIMITED | Thirsk | 1978 | Total exemption (full) |
| PENNY ENGINEERING LIMITED | Clowne | 1978 | Full accounts |
| MMD MINING MACHINERY DEVELOPMENTS LTD | Alfreton | 1978 | Group accounts |
| ALPHA PROCESS CONTROLS (INTERNATIONAL) LIMITED | Peterlee | 1978 | Total exemption (full) |
| CAMBRIDGE DYNAMICS LIMITED | Peterborough | 1978 | Total exemption (full) |
| HEYPAC LIMITED | Aldershot | 1978 | Total exemption (full) |
| CLINSTOWN LIMITED | Wolverhampton | 1978 | Total exemption (full) |
| KNF NEUBERGER U.K. LIMITED | Witney | 1978 | Small company accounts |
| ERG (AIR POLLUTION CONTROL) LIMITED | Slinfold | 1978 | Medium company accounts |