| TECHNOSTICS LIMITED | Hull | 2003 | Total exemption (full) |
| BENTLEY SECURITY PROJECTS LIMITED | Oldham | 2003 | Total exemption (full) |
| COMPACT INSTRUMENTS LIMITED | Bolton | 2003 | Total exemption (full) |
| OPTIMEASURE LIMITED | Wootton | 2003 | Total exemption (full) |
| APOLLO ELECTRONICS CORPORATION LIMITED | Huddersfield | 2003 | Total exemption (full) |
| PRECISION DEVICES INTERNATIONAL LIMITED | Normanton | 2003 | Total exemption (full) |
| SMB DESIGNS LIMITED | Road Weston super Mare | 2003 | Total exemption (full) |
| INSYNC TECHNOLOGY LIMITED | Petersfield | 2003 | Total exemption (full) |
| STAR INSTRUMENTS LIMITED | Dunmurry | 2003 | Total exemption (full) |
| ICEMOS TECHNOLOGY LIMITED | — | 2003 | Small company accounts |
| R E A P SYSTEMS LTD. | Southampton | 2003 | Total exemption (full) |
| SENSAM LIMITED | Glazebury | 2003 | Total exemption (full) |
| MUSIC FIRST AUDIO LIMITED | East Sussex | 2003 | Total exemption (full) |
| BRUCOM DISTRIBUTION LIMITED | Hixon, Stafford | 2003 | Total exemption (full) |
| STS INTELLIMON LIMITED | Lincoln | 2003 | Total exemption (full) |
| DIGITAL YACHT LTD | Bristol | 2003 | Total exemption (full) |
| FUSION COMPONENTS LIMITED | Middlesex | 2003 | Total exemption (full) |
| CONTROLINE LIMITED | West Yorkshire | 2003 | Total exemption (full) |
| MIDMOS SOLUTIONS LIMITED | Knaresborough | 2003 | Small company accounts |
| NOTE WINDSOR LIMITED | Berkshire | 2003 | Full accounts |
| GLOBAL ELECTRICAL ENGINEERING LIMITED | Blackburn | 2003 | Total exemption (full) |
| IMETRUM LIMITED | Bristol | 2003 | Total exemption (full) |
| EYE INDEX LIMITED | Cambs | 2003 | Total exemption (full) |
| NEXDORF ELECTRICAL CONTROL ENGINEERING LIMITED | Pontyclun | 2003 | Total exemption (full) |
| AOI SYSTEMS LIMITED | Johnstone | 2003 | Total exemption (full) |
| ABLE2 UK LIMITED | Blackburn | 2003 | Total exemption (full) |
| ZILICA LIMITED | Berkshire | 2003 | Total exemption (full) |
| WIKA OPTICAL SENSING LIMITED | Didcot | 2003 | Small company accounts |
| K LITTLE CONTROL SYSTEMS LIMITED | Northacre Industrial Park | 2003 | Total exemption (full) |
| RFID CENTRE LTD | Surrey | 2003 | Total exemption (full) |
| KATRONIC SYSTEMS LIMITED | Coventry | 2003 | Total exemption (full) |
| DYCHE PROPERTIES LIMITED | Coventry | 2003 | Total exemption (full) |
| INVISIBLE SYSTEMS HOLDINGS LIMITED | Manchester | 2003 | Total exemption (full) |
| LENOVO TECHNOLOGY (UNITED KINGDOM) LIMITED | Farnborough | 2003 | Full accounts |
| ORIGINAL LTD | Shrewsbury | 2003 | Total exemption (full) |
| FERGUSON HILL STUDIOS LIMITED | Herne Bay | 2003 | Total exemption (full) |
| CLARKE CONTROLS & DISTRIBUTION LIMITED | Kingswinford | 2003 | Total exemption (full) |
| CONTROLMAX LIMITED | Hamilton | 2003 | Total exemption (full) |
| BULGIN LIMITED | Cambridge | 2003 | Full accounts |
| DETECTOR AND SENSOR TECHNOLOGIES LIMITED | Glenrothes | 2003 | Total exemption (full) |
| ALKER FIBRE OPTIC SPECIALISTS LIMITED | Lingfield | 2003 | Total exemption (full) |
| PR ELECTRONICS LTD | Rossendale | 2003 | Total exemption (full) |
| ASK TECHNOLOGY LIMITED | Basingstoke | 2003 | Total exemption (full) |
| EDINBURGH BIOSCIENCES LTD. | Grangemouth | 2003 | Total exemption (full) |
| MPB INDUSTRIES LIMITED | Cambridge | 2003 | Audit-exempt subsidiary |
| PRECISION FLOW LIMITED | High Wycombe | 2003 | Unaudited abridged |
| GT VISION LTD | Wickhambrook | 2003 | Total exemption (full) |
| SIGNATROL LIMITED | Tewkesbury | 2003 | Total exemption (full) |
| FREEMAN TECHNOLOGY LIMITED | Malvern | 2003 | Total exemption (full) |
| MICROTRAX DESIGNS LIMITED | Long Eaton | 2003 | Total exemption (full) |
| MOVIE CAMERA SUPPORT LIMITED | Iver | 2003 | Total exemption (full) |
| ATLAS (SCOTLAND) LIMITED | Kilmarnock | 2003 | Total exemption (full) |
| ONE DIGITAL LIMITED | Northampton | 2003 | Total exemption (full) |
| INTEGRATED SECURITY MANUFACTURING HOLDINGS LIMITED | Crawley | 2003 | Total exemption (full) |
| ISOCOM COMPONENTS 2004 LIMITED | Hartlepool | 2003 | Full accounts |
| ADEPT COMPUTER SERVICES LIMITED | Leeds | 2004 | Total exemption (full) |
| SENSCIENT LIMITED | Yate | 2004 | Full accounts |
| JKM TECHNOLOGIES LTD | High Peak | 2004 | Total exemption (full) |
| ABBEY SPARES AND SUPPLIES LIMITED | Holt Heath | 2004 | Total exemption (full) |
| ZYXEL COMMUNICATIONS UK LIMITED | Wokingham | 2004 | Full accounts |