| RIGIBORE LIMITED | Hayle | 1979 | Total exemption (full) |
| MCGREGOR WORKS LIMITED | Alresford | 1979 | Total exemption (full) |
| MAGMA FABRICATION (GLENROTHES) LIMITED | Fife | 1979 | Total exemption (full) |
| BO-MAC (SHEFFIELD) LIMITED | Sheffield | 1979 | Total exemption (full) |
| TRAVELLING WIRE LIMITED | Burgess Hill | 1979 | Total exemption (full) |
| BAE SYSTEMS PLC | London | 1979 | Group accounts |
| SLINGCO LIMITED | Rawtenstall | 1980 | Full accounts |
| MULHOUSE LIMITED | Rochford | 1980 | Total exemption (full) |
| MICRA PATTERN CO. LIMITED | — | 1980 | Total exemption (full) |
| EARLSDON SHEET METAL LIMITED | Rugby | 1980 | Total exemption (full) |
| J.P.M. PRESS BRAKE SECTIONS LIMITED | West Midlands | 1980 | Small company accounts |
| ELG UTICA ALLOYS LIMITED | Rotherham | 1980 | Full accounts |
| AURIC METAL FINISHERS LIMITED | Coventry | 1980 | Total exemption (full) |
| JW COLPITTS & CO LIMITED | Blyth Riverside Business Park | 1980 | Total exemption (full) |
| WALLWORK CAMBRIDGE LIMITED | Bury | 1980 | Small company accounts |
| CHINGFORD TECHNICAL COATINGS LIMITED | Maidenhead | 1980 | Total exemption (full) |
| PIPELINE INDUCTION HEAT LIMITED | Burnley | 1980 | Full accounts |
| SMYTH STEEL LIMITED | Coleraine | 1980 | Small company accounts |
| PLAYLE ENGINEERING COMPANY LTD | Witham | 1980 | Unaudited abridged |
| BROWNLEE FABRICATIONS LIMITED | Rainworth, Mansfield | 1980 | Total exemption (full) |
| UNIWIRE LTD. | Tetbury | 1980 | Total exemption (full) |
| JDR PRODUCTS LIMITED | Nuneaton | 1980 | Total exemption (full) |
| TRIVENT LIMITED | Leeds | 1980 | Total exemption (full) |
| RUDGWICK METALS LIMITED | Sussex | 1980 | Total exemption (full) |
| VIRTUE AEROSPACE LIMITED | Horndean | 1980 | Small company accounts |
| KING AND FOWLER UK LIMITED | Belfast | 1980 | Small company accounts |
| D.H. INDUSTRIES LIMITED | Laindon | 1980 | Full accounts |
| PAGE CASTOR LIMITED | West Bromwich | 1980 | Total exemption (full) |
| NEURA MOBILE ROBOTS LTD | Bicester | 1980 | Total exemption (full) |
| PFEIFER ROPE AND TACKLE LIMITED | Southampton | 1980 | Full accounts |
| STRATFORD PRECISION ENGINEERING SERVICES LIMITED | Lakeside Redditch | 1980 | Total exemption (full) |
| KUHR ENGINEERING LIMITED | Littlehampton | 1980 | Total exemption (full) |
| CENTREWIRE LIMITED | Stoke-on-Trent | 1980 | Audit-exempt subsidiary |
| DALES FABRICATIONS LIMITED | Derbyshire | 1980 | Total exemption (full) |
| INDUSTRIAL METAL FORMS LIMITED | Brierley Hill | 1980 | Total exemption (full) |
| CAIRNHILL STRUCTURES LIMITED | Lanarkshire | 1980 | Full accounts |
| F.C. NEWELL & SON LIMITED | Gillingham | 1980 | Total exemption (full) |
| KALSTAN ENGINEERING LIMITED | Stevenage | 1980 | Total exemption (full) |
| A.D. CERTIFIED LIFTING SERVICES LIMITED | Rugeley | 1980 | Total exemption (full) |
| WILFIX LIMITED | Bristol | 1980 | Total exemption (full) |
| GIBSON CENTRI-TECH LIMITED | Lichfield | 1980 | Total exemption (full) |
| PRIME METALLURGY LIMITED | Sheffield | 1980 | Total exemption (full) |
| EUROCLAD GROUP LIMITED | Cardiff | 1980 | Full accounts |
| N.U.B. ENGINEERING LIMITED | Newhouse Motherwell | 1980 | Unaudited abridged |
| TOMLINSON TUBE AND INSTRUMENT LIMITED | Bidford on Avon | 1980 | Total exemption (full) |
| CAL GAVIN LIMITED | Alcester | 1980 | Total exemption (full) |
| CONTROL GEAR (FILTRATION) LIMITED | Pontypridd | 1980 | Total exemption (full) |
| GIRO ENGINEERING LIMITED | Park Gate, Southampton | 1980 | Audited abridged |
| TURNSPEED PRECISION ENGINEERING COMPANY LIMITED | Yeovil | 1980 | Full accounts |
| BEDFORD TRANSMISSIONS LIMITED | Dunmow | 1980 | Total exemption (full) |
| WAKEFIELD ACOUSTICS LIMITED | Heckmondwike | 1980 | Full accounts |
| TREVOR BOLTON ENGINEERING SERVICES LIMITED | Blackburn | 1980 | Unaudited abridged |
| PRO-MIL ENGINEERING LIMITED | Sutton Coldfield | 1980 | Small company accounts |
| J. S. M. ENGINEERING LIMITED | Nottingham | 1980 | Small company accounts |
| BYERS BROTHERS CUMBRIA LIMITED | Carlisle | 1980 | Total exemption (full) |
| HORSTMAN DEFENCE SYSTEMS LIMITED | Bath | 1980 | Full accounts |
| CUMBERLAND STRUCTURAL SERVICES LIMITED | Parkstone, | 1980 | Total exemption (full) |
| METAFIN GROUP HOLDINGS LIMITED | Walsall | 1980 | Total exemption (full) |
| CARLTON LASER SERVICES LIMITED | Leicester | 1980 | Total exemption (full) |
| CASTELL SAFETY INTERNATIONAL LIMITED | London | 1980 | Full accounts |