| STEADFAST ENGINEERING COMPANY LIMITED | Alcester | 1979 | Small company accounts |
| ATHERSTONE INDUSTRIAL COATINGS LIMITED | Arley | 1979 | Total exemption (full) |
| CALTHERM U.K. LIMITED | Newcastle | 1979 | Total exemption (full) |
| HELICAL TECHNOLOGY LTD. | Lytham | 1979 | Full accounts |
| COMET CATERING EQUIPMENT CO. LIMITED | Enfield | 1979 | Total exemption (full) |
| WILLIAM P. WHILAND & SON LIMITED | Dumbarton | 1979 | Total exemption (full) |
| G. DALE DESIGNS LIMITED | Essex | 1979 | Total exemption (full) |
| JBD TRITEC LIMITED | Glasgow | 1979 | Full accounts |
| JGC ENGINEERING AND TECHNICAL SERVICES LIMITED | Thurso | 1979 | Audit-exempt subsidiary |
| I M S INTERNATIONAL MARKETING SERVICES LIMITED | Perry Barr | 1979 | Total exemption (full) |
| NEIDA PRODUCTS (ENGINEERING) LIMITED | Staffordshire | 1979 | Medium company accounts |
| THERMEX LIMITED | Redditch | 1979 | Full accounts |
| CARBONLITE CONVERTING EQUIPMENT LIMITED | Littleborough | 1979 | Unaudited abridged |
| VIPA DESIGNS LIMITED | Melton Mowbray | 1979 | Total exemption (full) |
| SOUTHFIELDS ENGINEERING LIMITED | Billericay | 1979 | Unaudited abridged |
| DORMOR MACHINE AND ENGINEERING COMPANY LIMITED | Middlesbrough | 1979 | Total exemption (full) |
| GARTHCO LIMITED | Hambrook | 1979 | Total exemption (full) |
| GREENGATE METAL COMPONENTS LIMITED | Manchester | 1979 | Total exemption (full) |
| KIRNCROFT ENGINEERING LIMITED | Hull | 1979 | Total exemption (full) |
| KEMPSTON LIMITED | Taunton | 1979 | Medium company accounts |
| JAMESTAN ENGINEERING LIMITED | North Devon | 1979 | Unaudited abridged |
| S G INSTRUMENTS LIMITED | Stalybridge | 1979 | Small company accounts |
| JACK SAYERS PRODUCTS LIMITED | Norfolk | 1979 | Total exemption (full) |
| DAPPAT ENGINEERING LIMITED | — | 1979 | Total exemption (full) |
| SAMUEL WILKES (ENGINEERING) LIMITED | Walsall | 1979 | Total exemption (full) |
| HEALY BEARINGS INTERNATIONAL LIMITED | Leicester | 1979 | Total exemption (full) |
| HUGH PRICHARD & CO (NOTTINGHAM) LTD | Nottingham | 1979 | Total exemption (full) |
| GRINDRITE (MPS) LIMITED | Nottingham | 1979 | Total exemption (full) |
| SYSPAL LIMITED | Shropshire | 1979 | Full accounts |
| BLAZON FABRICATIONS LIMITED | Gravesend | 1979 | Total exemption (full) |
| ROBINSON WIRE CLOTH LIMITED | Staffordshire | 1979 | Total exemption (full) |
| WALKER PRECISION ENGINEERING LIMITED | Glasgow | 1979 | Full accounts |
| A. AND G. STRUCTURES LIMITED | Bracknell | 1979 | Total exemption (full) |
| SIRIUS PROJECT ENGINEERING LIMITED | Rugby | 1979 | Small company accounts |
| ASHBY TRADE SIGN SUPPLIES LIMITED | Basingstoke | 1979 | Total exemption (full) |
| VISTA ENGINEERING LIMITED | High Peak | 1979 | Group accounts |
| EDWARDS ENGINEERING AND FABRICATION CO. LIMITED | Liverpool | 1979 | Unaudited abridged |
| MERSEY REWINDS LIMITED | Merseyside | 1979 | Small company accounts |
| ACCURA ENGINEERING LIMITED | Willenhall | 1979 | Full accounts |
| B.C. TUBE BENDERS LIMITED | Suffolk | 1979 | Small company accounts |
| GSM VALTECH INDUSTRIES LIMITED | Thirsk | 1979 | Small company accounts |
| SECOL ENGINEERING LIMITED | Hastings | 1979 | Total exemption (full) |
| TECONNEX LIMITED | Gainsborough | 1979 | Full accounts |
| GUARDIAN INDUSTRIAL DOORS LIMITED | Essex | 1979 | Total exemption (full) |
| F. KLUCZNIK & SON LIMITED | Stoke on Trent | 1979 | Group accounts |
| D.C.E. HOLNE LIMITED | Leatherhead | 1979 | Total exemption (full) |
| COLBRIDGE ENGINEERING LIMITED | Haywards Heath | 1979 | Total exemption (full) |
| M.J. SECTIONS LIMITED | Netherton | 1979 | Medium company accounts |
| HENRY TECHNOLOGIES LIMITED | Glasgow | 1979 | Small company accounts |
| FSM MANUFACTURING LIMITED | Suffolk | 1979 | Total exemption (full) |
| BLANC AERO INDUSTRIES UK LIMITED | Rugby | 1979 | Full accounts |
| SPRINGFAST LIMITED | Gloucester, | 1979 | Total exemption (full) |
| NEVADA ENGINEERING COMPANY LIMITED | Hitchin | 1979 | Total exemption (full) |
| WEST END PRECISION LIMITED | Bideford | 1979 | Total exemption (full) |
| LEEC LIMITED | Nottingham | 1979 | Medium company accounts |
| BURNTWOOD FASTENERS LIMITED | Cannock | 1979 | Total exemption (full) |
| TOLLGATE PRODUCTS LIMITED | Telford Shropshire | 1979 | Total exemption (full) |
| SWISSMATIC LIMITED | Wishaw | 1979 | Total exemption (full) |
| GARTSHERRIE ENGINEERING LIMITED | — | 1979 | Full accounts |
| S.L.S.PRECISION ENGINEERS LIMITED | Mansfield | 1979 | Total exemption (full) |