• A A Telecom Ltd
  38 Thames Street, SUNBURY ON THAMES, Middlesex, TW16 6AF
• Aastra Telecom UK Ltd
  Unit B3 Armstrong Mall, Southwood Business Park, FARNBOROUGH, Hampshire, GU14 0NR
• Acorn Wireless Ltd
  Acorn House 40 Eddington Road, BRACKNELL, Berkshire, RG12 8GF
• Aerial Engineering Co Ltd
  5 Curfew Yard, Thames Street, WINDSOR, Berkshire, SL4 1SN
• Airspan Communications Ltd
  Cambridge House, Oxford Road, UXBRIDGE, Middlesex, UB8 1UN
• Airspan Networks Eastern Europe Ltd
  Cambridge House, Oxford Road, UXBRIDGE, Middlesex, UB8 1UN
• Alfca Systems
  Kingswick House, Kingswick Drive, ASCOT, Berkshire, SL5 7BH
• All Your Communications
  2 Fleet Business Park, Sandy Lane, Church Crookham, FLEET, Hampshire, GU52 8BF
• Alphatel
  123 Bickenhall Mansions, Bickenhall Street, LONDON, Greater London, W1U 6BT
• Apex Communications
  Nine Mile Ride, CROWTHORNE, Berkshire, RG45 6BQ
• Applied Telecom
  11a Pinkneys Road, MAIDENHEAD, Berkshire, SL6 5DJ
• Area Communications
  16 Acacia Avenue, Wraysbury, STAINES, Middlesex, TW19 5HD
• Argyll Business Centres Head Office
  Arundel House, 31a ST. James's Square, LONDON, Greater London, SW1Y 4JR
• Aspect Software UK Ltd
  2 The Square, Stockley Park, UXBRIDGE, Middlesex, UB11 1AD
• Aspen Electronics Ltd
  1-3 Kildare Close, RUISLIP, Middlesex, HA4 9UR
• BTS Holdings plc
  B T S House, 69-73 Manor Road, WALLINGTON, Surrey, SM6 0DD
• Barrington Technology Ltd
  Barrington House, 19 Church Road, EPSOM, Surrey, KT17 4DZ
• Benetix Ltd
  Unit 14 Grove Park Industrial Estate, Waltham Road, White Waltham, MAIDENHEAD, Berkshire, SL6 3LW
• Blackford Telecoms Ltd
  8 French Gardens, Blackwater, CAMBERLEY, Surrey, GU17 9DP
• Blue Coat Systems Ltd
  459 London Road, CAMBERLEY, Surrey, GU15 3JA
• Bradmatt Telecom Ltd
  Cobbett Hill Radio Station, Cobbett Hill, Normandy, GUILDFORD, Surrey, GU3 2AA
• Britannic Group (Holdings) Ltd
  Genesis House, Merrow Lane, GUILDFORD, Surrey, GU4 7BN
• Bruel & Kjaer
  92 Uxbridge Road, Harrow Weald Lodge, HARROW, Middlesex, HA3 6BZ
• Bulk GSM
  Unit 25 Cygnus Business Centre, Dalmeyer Road, LONDON, Greater London, NW10 2XA
• Bureautech Digital Ltd
  30 Park Lane, REIGATE, Surrey, RH2 8JX
• Business Systems (U.K.) Ltd
  462 London Road, ISLEWORTH, Middlesex, TW7 4ED
• C K Business Systems
  46 Horsenden La North, GREENFORD, Middlesex, UB6 0PA
• Cablefree Solutions Ltd
  27 Matham Road, EAST MOLESEY, Surrey, KT8 0SX
• Cablewise Communications
  47 Hillside Road, ASHTEAD, Surrey, KT21 1RZ
• Cantata Technology Ltd
  Unit 4 Bracknell Enterprise Centre, BRACKNELL, Berkshire, RG12 1NF
• Cardslot Ltd
  3 Rundell Crescent, LONDON, Greater London, NW4 3BS
• Certacom (Switching) Ltd
  1 Holtspur Lane, Wooburn Green, HIGH WYCOMBE, Buckinghamshire, HP10 0AA
• Chartwell Telecom Consultants Ltd
  Mill Lane, GODALMING, Surrey, GU7 1EY
• Chesterfield Associates
  Fitzroy House, Lynwood Drive, WORCESTER PARK, Surrey, KT4 7AT
• Chyzons (Telecommunications) Ltd
  161 Ruxley Lane, EPSOM, Surrey, KT19 9EX
• City Telecom
  36 Golders Gardens, LONDON, Greater London, NW11 9BU
• Cleanline Installations Ltd
  Terminal House, Station Approach, SHEPPERTON, Middlesex, TW17 8AS
• Coherent Research Ltd
  Unit 8 Princess Mews, Horace Road, KINGSTON UPON THAMES, Surrey, KT1 2SZ
• Communications Specialists
  Unit 3, 459 London Road, CAMBERLEY, Surrey, GU15 3JA
• Comverse UK Ltd
  Cranbourne House, 135 Bath Road, SLOUGH, Berkshire, SL1 3UX
• Countrywide Installations
  18 South Lane, NEW MALDEN, Surrey, KT3 5HT
• Cross Medical Technologies Ltd
  1 Lakeside Business Park, Swan Lane, SANDHURST, Berkshire, GU47 9DN
• Cross Technologies plc
  1 Lakeside Business Park, Swan Lane, SANDHURST, Berkshire, GU47 9DN
• D R D Communications Ltd
  Connect House, 21a Willow Lane, MITCHAM, Surrey, CR4 4NA
• Damovo (U K) Ltd
  4 Lion Park Avenue, CHESSINGTON, Surrey, KT9 1ST
• Data-Flo Business Solutions
  Research House, Fraser Road, Perrivale, GREENFORD, Middlesex, UB6 7AQ
• Dataflex Design Communications Ltd
  Connect House, Kingston Road, LEATHERHEAD, Surrey, KT22 7LT
• Digital Business Services Ltd
  95 Desford Way, ASHFORD, Middlesex, TW15 3AS
• Direct Telecom
  9 Chipstead Valley Road, COULSDON, Surrey, CR5 2RB
• Direct Telecommunications I.T Services Ltd
  5 Drakes Courtyard, 291 Kilburn High Road, LONDON, Greater London, NW6 7JR
• Discount Payphones
  177 High Street, Langley, SLOUGH, Berkshire, SL3 8LP
• Discount Payphones
  5 Tulip Close, HAMPTON, Middlesex, TW12 3SA
• Dolphin Communications
  85 Kingsley Road, HOUNSLOW, Middlesex, TW3 4AH
• Easaphone Services
  29a Greencroft Gardens, LONDON, Greater London, NW6 3LN
• Elephant Talk Communications PRS U.K. Ltd
  Unit 24 Hallmark Trading Estate, Fourth Way, Wembley, Middlesex, HA9 0LB
• Elmeg
  2 Rydens Road, WALTON ON THAMES, Surrey, KT12 3BS
• Em3 Technologies Ltd
  The Hall, Woking Road, GUILDFORD, Surrey, GU1 1QD
• Em: Seven Communications
  11 Chenies Street, LONDON, Greater London, WC1E 7EY
• Envoy Holdings Ltd
  2 The Square, Stockley Park, UXBRIDGE, Middlesex, UB11 1AD
• Enzcom Solutions
  4 Maple Industrial Estate, Maple Way, FELTHAM, Middlesex, TW13 7AW
• Euro Worldwide Communications
  85 Kingsley Road, HOUNSLOW, Middlesex, TW3 4AH
• Excell Business Systems
  53 Frith Street, LONDON, Greater London, W1D 4SN
• Excellent Communications Ltd
  50 Regent St, LONDON, Greater London, W1B 5RD
• Expert Commumications plc
  3 Ashville Way, WOKINGHAM, Berkshire, RG41 2PL
• Flix
  16a Chelsea Wharf, Lots Road, LONDON, Greater London, SW10 0QJ
• Funis
  Star House, Star Road, UXBRIDGE, Middlesex, UB10 0QH
• G P T Video Systems
  Foundation Park, 6 Roxborough Way, MAIDENHEAD, Berkshire, SL6 3UD
• Geonix Technology Ltd
  Surrey Technology Centre, Occam Road, Surrey Research Park, GUILDFORD, Surrey, GU2 7YG
• Glovicom
  50 Regent St, LONDON, Greater London, W1B 5RD
• Granger Telecom
  Granger Corner, 1 Brooklands Road, WEYBRIDGE, Surrey, KT13 0SD
• H D P Consultant Engineers
  Mill Lane, GODALMING, Surrey, GU7 1EY
• In Touch Communications UK Ltd
  80 Station Avenue, EPSOM, Surrey, KT19 9UG
• Independent Telephone Company Ltd
  329 Putney Bridge Road, LONDON, Greater London, SW15 2PG
• Internet Videocommunications Ltd
  Alexander House Mere Park, Dedmere Road, MARLOW, Buckinghamshire, SL7 1FX
• Jetstream Communications Ltd
  16 Elmtree Road, TEDDINGTON, Middlesex, TW11 8ST
• K T I T Ltd
  228 Merton Road, LONDON, Greater London, SW19 1EQ
• KLC Employment Law Consultantsllp
  Mill Lane, GODALMING, Surrey, GU7 1EY
• Kingston Business Communications
  30 St James's Street, LONDON, Greater London, SW1A 1HB
• Kokusai Electric Europe GmbH
  West Cross Centre, Great West Rd., BRENTFORD, Middlesex, TW8 9ER
• Latitude Communications
  50 Regent St, LONDON, Greater London, W1B 5RD
• Leonard-Carter Communications Ltd
  The Granary, 113 Lavender Walk, LONDON, Greater London, SW11 1JS
• Live Link Video Communications Ltd
  Alexander House Mere Park, Dedmere Road, MARLOW, Buckinghamshire, SL7 1FX
• Longcroft (GX) Management Company Ltd
  49 Station Road, GERRARDS CROSS, Buckinghamshire, SL9 8ES
• M T V Distribution plc
  Unit 8 9 Sky Business Park, Eversley Way, EGHAM, Surrey, TW20 8RF
• MTV Telecom (Distribution) plc
  Unit 8 9 Sky Business Park, Eversley Way, EGHAM, Surrey, TW20 8RF
• Maybank Marketing
  Maybank, Hookley Lane, Elstead, GODALMING, Surrey, GU8 6JE
• Mccarthy
  Village Way, YATELEY, Hampshire, GU46 7SE
• Mcgurk
  5 ST. Michaels Cottages, Old Wokingham Road, WOKINGHAM, Berkshire, RG40 3DU
• Meridian Options Systems Support Ltd
  69-71 Carshalton Road, SUTTON, Surrey, SM1 4LH
• Metrodata Ltd
  Blenheim House Crabtree Office Village, Eversley Way, EGHAM, Surrey, TW20 8RY
• Microwave Network Inc
  7 Clivemont Road, MAIDENHEAD, Berkshire, SL6 7BU
• Mobestar Ltd
  1 Marylebone High Street, LONDON, Greater London, W10 4NB
• Mobyko Ltd
  Third Floor, 27 Beak Street, LONDON, Greater London, W1F 9RU
• Msys Telecom Ltd
  Crowthorne Enterprise Centre Crowthorne Business Estate, Old Wok, CROWTHORNE, Berkshire, RG45 6AW
• Multipulse Electronics Ltd
  3 Goldsworth Park Trading Estate, Kestrel Way, WOKING, Surrey, GU21 3BA
• NSSL Ltd
  6 Gatton Park Business Centre, Wells Place, REDHILL, Surrey, RH1 3DR
• Nera Satellite Services Ltd
  6 Gatton Park Business Centre, Wells Place, REDHILL, Surrey, RH1 3DR
• Next Systems Ltd
  67-69 Woodham Lane, New Haw, ADDLESTONE, Surrey, KT15 3ND
• North West Telecom
  40 Craven Park Road, LONDON, Greater London, NW10 4AE
• Ocean Communications Ltd
  38 The Netherlands, COULSDON, Surrey, CR5 1ND
• Olympia Technology
  5 Archdale Business Centre, Brember Road, HARROW, Middlesex, HA2 8DJ
• Omnia Telecom Ltd
  9 Edward Avenue, CAMBERLEY, Surrey, GU15 3BB
• Panorama Antennas Ltd
  61 Frogmore, LONDON, Greater London, SW18 1HF
• Pauls Electronic Services
  34 Mount Street, DORKING, Surrey, RH4 3HX
• Payphones South East Ltd
  4 Hazel Way, COULSDON, Surrey, CR5 3PJ
• Preferred One Stop Technologies
  1 Lakeside Business Park, Swan Lane, SANDHURST, Berkshire, GU47 9DN
• Programmed Communications
  Unit 9 Bluebird House, Povey Cross Road, HORLEY, Surrey, RH6 0AF
• Radius Tech Ltd
  Tir Na N'Og, Coombe Ridings, KINGSTON UPON THAMES, Surrey, KT2 7JT
• Raymond H Burrell Associates Ltd
  Unit D8, Chobham, WOKING, Surrey, GU24 8HU
• Redwood Technologies Ltd
  The Redwood Building, Broad Lane, BRACKNELL, Berkshire, RG12 9GU
• Redwood Telecommunications
  Trade Tower, Coral Row, LONDON, Greater London, SW11 3UF
• Ring It
  24 Linden Way, Ripley, WOKING, Surrey, GU23 6LW
• River Court Consultants Ltd
  Mill Lane, GODALMING, Surrey, GU7 1EY
• S W Communications
  38 Station Road, North Harrow, HARROW, Middlesex, HA2 7SE
• Scribble Communications Ltd
  MWB Business Exchange, 2 Gayton Road, HARROW, Middlesex, HA1 2XU
• Skystream Networks
  The Granary Grange Court, Grange Road, Tongham, FARNHAM, Surrey, GU10 1DW
• Storacall Technology Ltd
  Swan House, 69-71 Windmill Road, SUNBURY ON THAMES, Middlesex, TW16 7DT
• Sword Telecommunications Ltd
  218 Eversholt Street, LONDON, Greater London, NW1 1BD
• Synectiv
  MWB Business Exchange, 2 Gayton Road, HARROW, Middlesex, HA1 2XU
• System Supply Services
  2 Mill Lane, Peasmarsh, GUILDFORD, Surrey, GU3 1NB
• Systems Supply Services
  Melbury Cottage, Smithwood Avenue, CRANLEIGH, Surrey, GU6 8PS
• T C L Communications Ltd
  67 Crabtree Lane, LONDON, Greater London, SW6 6LP
• TTP Com
  20 Nugent Road, GUILDFORD, Surrey, GU2 7AF
• Talkforless Communications Ltd
  Unit 24 Hallmark Trading Estate, Fourth Way, Wembley, Middlesex, HA9 0LB
• Tech Wonders
  Unit 29 Park Royal Business Centre, 9-17 Park Royal Road, LONDON, Greater London, NW10 7LQ
• Technical Professional Radio Solutions Ltd
  1 Grove Park Industrial Estate, White Waltham, MAIDENHEAD, Berkshire, SL6 3LW
• Tekelec Telecommunications Equipment
  Wacker House, 85 High Street, EGHAM, Surrey, TW20 9HF
• Telecom Advice
  348 West Barnes Lane, NEW MALDEN, Surrey, KT3 6NB
• Telecom Maintenance Ltd
  Douglas House, 16-18 Douglas Street, LONDON, Greater London, SW1P 4PB
• Telefonix
  11a Camp Road, FARNBOROUGH, Hampshire, GU14 6EN
• Telenova Ltd
  144 Regina Road, SOUTHALL, Middlesex, UB2 5PP
• Ticah Control & Automation Ltd
  Willinghurst Cottage, Shamley Green, GUILDFORD, Surrey, GU5 0SU
• Topcall
  R S A House, 12 Western Road, BRACKNELL, Berkshire, RG42 1RT
• Tunbridge Commercial Investments Ltd
  Connaught House, Alexandra Terrace, GUILDFORD, Surrey, GU1 3DA
• Vale Communications
  333 Connaught Road, Brookwood, WOKING, Surrey, GU24 0AD
• Waldon Developments Ltd
  Beaver House, York Close, Byfleet, WEST BYFLEET, Surrey, KT14 7HN
• Xantix Systems
  Kimpton Road, SUTTON, Surrey, SM3 9QP
• Zultys Technologies UK Ltd
  A 8 Denmark Street, WOKINGHAM, Berkshire, RG40 2BB