| BRITISH ENGINEERING SERVICES ASSET RELIABILITY STRAINSTALL LIMITED | Warrington | 2000 | Audit-exempt subsidiary |
| TWOFOLD LIMITED | Berkshire | 2000 | Total exemption (full) |
| AURIC SOLUTIONS LIMITED | Emsworth | 2000 | Total exemption (full) |
| QUINTON CRANE ELECTRONICS LIMITED | Derby | 2000 | Total exemption (full) |
| CAMBRIDGE LOGIC LTD | Cambridge | 2000 | Total exemption (full) |
| UTOPIA COMPUTERS LIMITED | Ayrshire | 2000 | Total exemption (full) |
| FUTURE MAGNETICS LIMITED | South Yorkshire | 2000 | Total exemption (full) |
| QUASAR ELECTRONICS LIMITED | Bishops Stortford | 2000 | Total exemption (full) |
| TITANIUM SURGICAL INSTRUMENTS LIMITED | Studham | 2000 | Total exemption (full) |
| PC PERIPHERALS LTD | London | 2000 | Total exemption (full) |
| PINECONE ASSOCIATES LIMITED | Whitchurch | 2000 | Total exemption (full) |
| AMBER INTEGRATED CONTROLS AND AUTOMATION LIMITED | Romsey | 2000 | Audit-exempt subsidiary |
| MARPLE LIMITED | Prescot | 2000 | Unaudited abridged |
| ALERTER GROUP LIMITED | Derby | 2000 | Small company accounts |
| IRUGASA REMOTE CONTROL SYSTEMS LTD | Consett | 2000 | Total exemption (full) |
| STEPHEN JAMES TECHNOLOGIES LIMITED | Matlock | 2000 | Unaudited abridged |
| CHALON COMPONENTS LIMITED | Warrington | 2000 | Total exemption (full) |
| STEALTH ELECTRONICS LIMITED | Ipswich | 2000 | Unaudited abridged |
| ICOM SCOTTECH LIMITED | Scottish Borders | 2000 | Total exemption (full) |
| SIVERS PHOTONICS LIMITED | Edinburgh | 2000 | Full accounts |
| STERLING ELECTRICAL CONTRACTORS LIMITED | — | 2000 | Total exemption (full) |
| PREMIER AUTOMATION LIMITED | Bedford | 2000 | Total exemption (full) |
| CURSOR CONTROLS LIMITED | Guildford | 2000 | Audit-exempt subsidiary |
| AZENTA UK LTD | Irlam | 2000 | Full accounts |
| ROTARY WATCHES LIMITED | Rayleigh | 2000 | Small company accounts |
| MASTRONIK SYSTEMS LIMITED | Shefford | 2000 | Total exemption (full) |
| C & M PRECISION LIMITED | Maldon | 2000 | Total exemption (full) |
| CAR PHONE INSTALLATIONS LIMITED | Hessle | 2000 | Total exemption (full) |
| POLECAM LIMITED | Buckingham | 2000 | Total exemption (full) |
| SIGMA IMAGING (UK) LIMITED | Welwyn Garden City | 2000 | Full accounts |
| ORIGIN STORAGE LIMITED | Basingstoke | 2000 | Full accounts |
| PRACTICAL CONTROL LIMITED | Sheffield | 2000 | Total exemption (full) |
| QRO SOLUTIONS LIMITED | Guildford | 2000 | Full accounts |
| WAYMONT CONSULTING LIMITED | Guildford | 2000 | Total exemption (full) |
| STAFFORD AERO TECHNOLOGIES LIMITED | Norwich | 2000 | Total exemption (full) |
| PLESSEY SEMICONDUCTORS LIMITED | Plymouth | 2000 | Full accounts |
| TERAVIEW LIMITED | Cambridge | 2000 | Total exemption (full) |
| OXFORD FIBER LTD | Oxford | 2000 | Total exemption (full) |
| EDT DIRECT ION LIMITED | Market Harborough | 2001 | Total exemption (full) |
| KPM ANALYTICS LTD | Wellingborough | 2001 | Total exemption (full) |
| INDUSTRIAL TOMOGRAPHY SYSTEMS LTD | Manchester | 2001 | Total exemption (full) |
| YELDEN SERVICES LIMITED | Huntingdon | 2001 | Total exemption (full) |
| PAL TECHNOLOGIES LIMITED | Glasgow | 2001 | Total exemption (full) |
| SPICER CONSULTING LIMITED | Stewartby | 2001 | Total exemption (full) |
| WTF TECHNOLOGY LIMITED | Stanmore | 2001 | Total exemption (full) |
| U-TOUCH LTD | Spalding | 2001 | Total exemption (full) |
| EXACTA TECHNOLOGIES LIMITED | Bristol | 2001 | Full accounts |
| TELEGARTNER UK LTD | Hatfield | 2001 | Small company accounts |
| TRUE LENS SERVICES LIMITED | Leicester | 2001 | Small company accounts |
| TGC INTERNATIONAL LIMITED | Rochester | 2001 | Medium company accounts |
| CIRCAD DESIGN LIMITED | Essex | 2001 | Unaudited abridged |
| DYNAMENT LIMITED | Mansfield | 2001 | Small company accounts |
| REAL TIME CONTROL SYSTEMS LIMITED | London | 2001 | Total exemption (full) |
| ALPHA-ACTIVE LTD | Honiton | 2001 | Total exemption (full) |
| PEACH INNOVATIONS LIMITED | — | 2001 | Unaudited abridged |
| LEDSYNERGY (DISPLAYS) LTD. | Andover | 2001 | Total exemption (full) |
| WAYNE KERR ELECTRONICS LTD | London | 2001 | Total exemption (full) |
| PSD CODAX LIMITED | Manchester | 2001 | Small company accounts |
| HOSTING SYSTEMS LIMITED | Stoke-on-Trent | 2001 | Total exemption (full) |
| INTEGRATED BACKPLANE SOLUTIONS LIMITED | Eastleigh | 2001 | Total exemption (full) |