| STEEL SPINNINGS LIMITED | West Midlands | 1951 | Total exemption (full) |
| J.E.MATTHEWS AND SONS LIMITED | Northampton | 1952 | Total exemption (full) |
| B.& G.LOCK & TOOL CO.LIMITED | Willenhall | 1952 | Unaudited abridged |
| LUNN ENGINEERING CO.LIMITED | Nottingham | 1952 | Total exemption (full) |
| MAHER LIMITED | Sheffield | 1952 | Full accounts |
| CAMERON ROBB LIMITED | Birmingham | 1952 | Total exemption (full) |
| CLYDE ASSOCIATED ENGINEERS, LIMITED | Clydebank | 1952 | Medium company accounts |
| GLADETREE LIMITED | Dartford | 1952 | Total exemption (full) |
| ASHTON PLANT HIRE (DUDLEY) LIMITED | Dudley | 1952 | Total exemption (full) |
| R.M.R.ENGINEERING LIMITED | Kent | 1952 | Total exemption (full) |
| ARRELL ENGINEERING COMPANY LTD. (THE) | Glasgow | 1952 | Total exemption (full) |
| WEDGE GROUP GALVANIZING LIMITED | West Midlands | 1953 | Full accounts |
| BIRMINGHAM GUN BARREL COMPANY, LIMITED(THE) | West Midlands | 1953 | Total exemption (full) |
| KINGFISHER (LUBRICATION) LIMITED | — | 1953 | Small company accounts |
| DAVID RITCHIE (IMPLEMENTS) LIMITED | Forfar | 1953 | Group accounts |
| POPE & MEADS LIMITED | Stewartby | 1953 | Group accounts |
| COOKE BROTHERS LIMITED | Walsall | 1953 | Small company accounts |
| CROFTON ENGINEERING LIMITED | London | 1953 | Total exemption (full) |
| PANDROL LIMITED | Worksop | 1953 | Full accounts |
| PAR COMMUNICATIONS LTD | Colwick | 1953 | Unaudited abridged |
| WHITTON PRECISION LIMITED | London | 1953 | Total exemption (full) |
| HOSPITAL METALCRAFT LIMITED | Dorset | 1953 | Full accounts |
| JMR SECTION BENDERS LTD | Dagenham | 1953 | Total exemption (full) |
| HOLT SPRINGS LIMITED | Hoylake Wirral | 1953 | Total exemption (full) |
| J.H. FENNER & CO. LIMITED | Staffordshire | 1953 | Full accounts |
| MILES-ASH LIMITED | Co Antrim | 1954 | Total exemption (full) |
| GLOBE MANUFACTURING LTD | Brentwood | 1954 | Small company accounts |
| ACME SPINNING CO.(OLDBURY)LIMITED | West Midlands | 1954 | Total exemption (full) |
| ASH & LACY AUTOMOTIVE LIMITED | Smethwick | 1954 | Small company accounts |
| FLOWFLEX COMPONENTS LIMITED | Buxton | 1954 | Full accounts |
| STERLING SPRINGS LIMITED | Cranborne Road Potters Bar | 1954 | Small company accounts |
| VOSS ENGINEERING COMPANY LIMITED(THE) | Tipton | 1954 | Unaudited abridged |
| ROYDE & TUCKER LIMITED | Hertfordshire | 1954 | Medium company accounts |
| ECLIPSE MAGNETICS LIMITED | Sheffield | 1954 | Full accounts |
| JP&S UNLIMITED | London | 1954 | Small company accounts |
| WILLIAM HAWKES (BLACKSMITHS) LIMITED | Birmingham 12 | 1954 | Unaudited abridged |
| MCBRAIDA PLC | Bristol | 1954 | Full accounts |
| G T COATINGS LIMITED | Newton Aycliffe | 1954 | Total exemption (full) |
| PROTEX FASTENERS LIMITED | Worcs | 1954 | Small company accounts |
| PENFOLD METALLISING CO.LIMITED | Chichester | 1954 | Total exemption (full) |
| BELL GEARS LIMITED | Sheffield | 1954 | Total exemption (full) |
| HILL ENGINEERING (CATFORD) LIMITED | Orpington | 1954 | Unaudited abridged |
| MASON & KING LIMITED | Leicester | 1954 | Full accounts |
| K.ENGINEERING COMPANY (WEST BROMWICH) LIMITED | Walsall | 1954 | Total exemption (full) |
| NUSTEEL HOLDINGS LIMITED | Lympne Hythe | 1954 | Group accounts |
| A.H.DODD & COMPANY(ENGINEERS)LIMITED | Chippenham | 1954 | Total exemption (full) |
| ULTRAMATRIX PRODUCTION SERVICES LIMITED | Alveley | 1954 | Total exemption (full) |
| PAUL ENGINEERING COMPANY LIMITED | Coventry | 1954 | Total exemption (full) |
| E.C.WILLIAMS LIMITED | Birmingham | 1954 | Total exemption (full) |
| J.W.HILL PRECISION ENGINEERING LIMITED | Worcester | 1955 | Unaudited abridged |
| DURHAM SHEET METAL WORKS LIMITED | Tyne and Wear | 1955 | Total exemption (full) |
| NEWMONT ENGINEERING COMPANY LIMITED | Isleworth | 1955 | Total exemption (full) |
| BOWERS & JONES LIMITED | Bilston | 1955 | Total exemption (full) |
| KIRKBY JIG & TOOL COMPANY LIMITED | Bromborough | 1955 | Total exemption (full) |
| EGGINTON FORGINGS LTD | — | 1955 | Total exemption (full) |
| EUROPEAN SPRINGS AND PRESSINGS LIMITED | Beckenham | 1955 | Full accounts |
| METAL ASSEMBLIES LTD | West Midlands | 1955 | Full accounts |
| CULLUM DETUNERS LIMITED | Heanor | 1955 | Full accounts |
| F.A. MORRIS (SHEFFIELD) LIMITED | Sheffield | 1955 | Total exemption (full) |
| MEASURING AND PROCESS CONTROL LIMITED | Essex | 1955 | Total exemption (full) |