| SHORTWAVE UK LTD. | Wimborne | 2006 | Total exemption (full) |
| ELITE TRANSDUCERS LTD | Aldermaston | 2006 | Total exemption (full) |
| SONAS DEVELOPMENTS LIMITED | Cwmbran | 2006 | Total exemption (full) |
| ATIK CAMERAS LIMITED | Cambridge | 2006 | Audit-exempt subsidiary |
| EX-I FLOW MEASUREMENT LIMITED | Arundel | 2006 | Total exemption (full) |
| FILSERV LIMITED | East Sussex | 2006 | Total exemption (full) |
| HANSFORD SENSORS LIMITED | High Wycombe | 2006 | Group accounts |
| INDUSTRIAL EYECARE LIMITED | Liverpool | 2006 | Total exemption (full) |
| API CAPACITORS LTD | Norwich | 2006 | Total exemption (full) |
| REDFLEX TRAFFIC SYSTEMS LIMITED | West End Southampton | 2006 | Full accounts |
| BRDSIM LTD | Horsham | 2006 | Total exemption (full) |
| INVISIBLE VISION LTD | Norfolk | 2006 | Total exemption (full) |
| ISOTOPE PRECISION LIMITED | North Walsham | 2006 | Total exemption (full) |
| MYSTRICA LTD | Linlithgow | 2006 | Total exemption (full) |
| TGA INDUSTRIES LIMITED | Brighton | 2006 | Full accounts |
| BOSTON DESIGN CONSULTANTS LIMITED | Milton Keynes | 2006 | Total exemption (full) |
| GROMAKO DATA & SERVICES LIMITED | London | 2006 | Unaudited abridged |
| PRIMELIGHT FILMS LIMITED | Ilkley | 2006 | Total exemption (full) |
| NORDEN COMMUNICATION UK LTD | Clacton on Sea | 2006 | Total exemption (full) |
| MICROWAVE TECHNOLOGY LTD | Northampton | 2006 | Unaudited abridged |
| SAVOX COMMUNICATIONS UK LIMITED | Birmingham | 2007 | Small company accounts |
| HD CONNECTIVITY LTD | Malvern | 2007 | Total exemption (full) |
| EUROFINS ELECTRICAL AND ELECTRONIC UK LIMITED | Wolverhampton | 2007 | Full accounts |
| ELECTRICOOL CONTROL SYSTEMS LTD | Radway | 2007 | Total exemption (full) |
| TECHPOINT ELECTRONIC SOLUTIONS LIMITED | Basingstoke | 2007 | Medium company accounts |
| ENABLING TECHNOLOGIES LIMITED | West Yorkshire | 2007 | Total exemption (full) |
| FUSION NETWORK SOLUTIONS LTD | Leeds | 2007 | Total exemption (full) |
| OMNISONIC INTERNATIONAL LIMITED | Ampthill | 2007 | Total exemption (full) |
| DLF CONTROL SYSTEMS LIMITED | Peterborough | 2007 | Total exemption (full) |
| ALESI SURGICAL LIMITED | Cardiff | 2007 | Small company accounts |
| ZEPHIR LIMITED | Castle Douglas | 2007 | Full accounts |
| JEANNERET LTD | Market Harborough | 2007 | Total exemption (full) |
| RIVATRON LTD | Lymington | 2007 | Total exemption (full) |
| EMC HYCAL LIMITED | Stafford | 2007 | Total exemption (full) |
| AUDAX GLOBAL SOLUTIONS LIMITED | Exeter | 2007 | Total exemption (full) |
| FERNDALE ELECTRONICS LIMITED | Peterborough | 2007 | Total exemption (full) |
| MINDER LIMITED | Bedford | 2007 | Total exemption (full) |
| S D INSTRUMENTATION LIMITED | Trowbridge | 2007 | Total exemption (full) |
| CONTROL FREQ LIMITED | Worthing | 2007 | Total exemption (full) |
| NANOGAN LIMITED | Cardiff | 2007 | Audit-exempt subsidiary |
| HOLYSTONE (EUROPE) LIMITED | Norwich | 2007 | Small company accounts |
| ZEPPELIN SYSTEMS UK LIMITED | Annesley | 2007 | Small company accounts |
| ATLANTIC INERTIAL SYSTEMS LIMITED | Plymouth | 2007 | Full accounts |
| GB ELECTRONICS (UK) LIMITED | Goring by Sea | 2007 | Full accounts |
| MT POWER ELECTRONICS LIMITED | London | 2007 | Unaudited abridged |
| MIDDLE-EARTH ENTERPRISES LIMITED | Aylesbury | 2007 | Total exemption (full) |
| ATB GROUP UK LIMITED | Norwich | 2007 | Full accounts |
| LS ENGINEERING SERVICES LIMITED | Norwich | 2007 | Total exemption (full) |
| SOUND MONKEYS LTD | Derbyshire | 2007 | Total exemption (full) |
| ABLE SYSTEMS LIMITED | Northwich | 2007 | Total exemption (full) |
| KUDOS AUDIO LIMITED | Crook | 2007 | Total exemption (full) |
| AERODYN LTD | Purley | 2007 | Total exemption (full) |
| BAY PHOTONICS LTD | Newton Abbot | 2007 | Total exemption (full) |
| SMS PRODUCT SERVICES LIMITED | Beeston | 2007 | Unaudited abridged |
| PHARE-TECH LTD | Worcester | 2007 | Total exemption (full) |
| LEICESTER CIRCUITS LIMITED | Leicester | 2007 | Total exemption (full) |
| THERMO ELECTRIC DEVICES LIMITED | Draycott | 2007 | Total exemption (full) |
| VAR SERVICES LIMITED | Sutton in Ashfield | 2007 | Audited abridged |
| EMEX CONTROL SYSTEMS LIMITED | Thurmaston | 2007 | Total exemption (full) |
| FLARE AUDIO LIMITED | Lancing | 2007 | Total exemption (full) |