| CALCERT INSTRUMENTS LIMITED | Station Road | 2003 | Total exemption (full) |
| EVIDATA LIMITED | — | 2003 | Total exemption (full) |
| NICE UK LIMITED | Sutton in Ahsfield | 2003 | Small company accounts |
| OPUS TECHNOLOGIES LIMITED | London | 2003 | Audit-exempt subsidiary |
| ELECTRO SOURCE (UK) LIMITED | Bessborough Road | 2003 | Total exemption (full) |
| AUTOMETERS SYSTEMS LIMITED | Stafford | 2003 | Total exemption (full) |
| BW BROADCAST LIMITED | Croydon | 2003 | Total exemption (full) |
| EMERALD ELECTRICAL CONTROLS LIMITED | Bristol | 2003 | Total exemption (full) |
| UNIVERSAL SOLUTIONS (HULL) LIMITED | Hull | 2003 | Unaudited abridged |
| ALLENDALE GROUP LTD | Hoddesdon | 2003 | Total exemption (full) |
| POSITION SENSORS LIMITED | Verwood | 2003 | Total exemption (full) |
| REGULIS LIMITED | Northampton | 2003 | Total exemption (full) |
| COIL TECH UK LTD | Deerhurst | 2003 | Total exemption (full) |
| HECTOR FINCH LIGHTING LIMITED | Pershore | 2003 | Total exemption (full) |
| MAXILANCE LIMITED | London | 2003 | Total exemption (full) |
| ANTEX (ELECTRONICS) LIMITED | Plymouth | 2003 | Total exemption (full) |
| RAYLIGHT LIMITED | Reading | 2003 | Total exemption (full) |
| CLARKE CONTROLS LIMITED | Manchester | 2003 | Total exemption (full) |
| SPEEDMARK-UK LTD | Bexhill | 2003 | Total exemption (full) |
| CONNECTIQ LTD | Stonehouse | 2003 | Total exemption (full) |
| SOLENTEC LIMITED | Shildon | 2003 | Unaudited abridged |
| CALIBRATION,MAINTENANCE & REPAIR LTD | Letchworth Garden City | 2003 | Small company accounts |
| CORD CONTROLS LIMITED | Leicester | 2003 | Total exemption (full) |
| INDUSTRIAL ELECTRIC ELEMENTS LIMITED | Stafford | 2003 | Total exemption (full) |
| LINTON SIGNS (LONDON) LTD | Maidstone | 2003 | Total exemption (full) |
| HILLSTONE POWER LIMITED | Heywood | 2003 | Total exemption (full) |
| ESH TRACE HEATING LIMITED | Market Drayton | 2003 | Total exemption (full) |
| MEDICARE SYSTEMS LIMITED | Worksop | 2003 | Total exemption (full) |
| ACTEGY LIMITED | Bracknell | 2003 | Group accounts |
| AUDIO VISUAL COMMODITY LTD | Colchester | 2003 | Unaudited abridged |
| CONTROL PANEL SERVICES LIMITED | Leicester | 2003 | Total exemption (full) |
| CONTROL HOUSE LIMITED | Elland | 2003 | Total exemption (full) |
| MARTIN AUDIO LIMITED | Park High Wycombe | 2003 | Audit-exempt subsidiary |
| THE EX ZONE LIMITED | Hersham | 2003 | Total exemption (full) |
| PRISM POWER LTD | Watford | 2003 | Total exemption (full) |
| ELECTRICAL MANUFACTURED SOLUTIONS LIMITED | Aylesbury | 2003 | Unaudited abridged |
| AAA/V SYSTEMS LTD | Grimsby | 2003 | Total exemption (full) |
| AUDIO NOTE (UK) LIMITED | Horsham | 2003 | Total exemption (full) |
| AMOKABEL FLEXISHIELD LTD | Mansfield | 2003 | Small company accounts |
| RECORD ELECTRICAL ASSOCIATES LIMITED | Nottingham | 2003 | Total exemption (full) |
| WREXHAM ELECTRICAL REPAIRS LIMITED | Ruabon | 2003 | Total exemption (full) |
| BEST & LLOYD LIMITED | Birmingham | 2003 | Total exemption (full) |
| SONTAY LIMITED | Kent | 2003 | Full accounts |
| CLOSE ENGINEERING SERVICES LIMITED | Goole | 2003 | Total exemption (full) |
| LINNET (UK) LIMITED | Estate, Chapeltown, Sheffield | 2003 | Total exemption (full) |
| P & A PROJECTS LIMITED | Ormskirk | 2003 | Total exemption (full) |
| MICHAEL ODAM LIGHTING DESIGN LIMITED | Swanage | 2003 | Total exemption (full) |
| SYRINIX LIMITED | Norwich | 2003 | Small company accounts |
| BTECH LTD | Bristol | 2003 | Total exemption (full) |
| COLLETT MANUFACTURING CO LIMITED | Chichester | 2003 | Unaudited abridged |
| DS ENERGY GROUP LTD | Great Yarmouth | 2003 | Unaudited abridged |
| ROWSMAN LTD | Sutton Coldfield | 2003 | Total exemption (full) |
| ADM (SOLUTIONS) LIMITED | Accrington | 2003 | Total exemption (full) |
| FANE CONTROL PANELS LIMITED | Newry | 2003 | Total exemption (full) |
| DJ ASSEMBLY LIMITED | Huntington | 2003 | Total exemption (full) |
| DESIGN LED PRODUCTS LIMITED | Livingston | 2003 | Full accounts |
| ALLCONTROLS LIMITED | Sawtry | 2003 | Total exemption (full) |
| PAUL METCALFE INTERNATIONAL LIMITED | Dunstable | 2003 | Total exemption (full) |
| UK GRID SOLUTIONS LIMITED | Stafford | 2003 | Full accounts |
| JM TRANSFORMERS LIMITED | Leatherhead | 2003 | Total exemption (full) |