• 1st Communications Installation & Maintenance Ltd
  15 Bowling Green Lane, LONDON, Greater London, EC1R 0BD
• 1st Communications Installation & Maintenance Ltd
  Pegasus House, 116-120 Golden Lane, LONDON, Greater London, EC1Y 0TF
• A A Telecom Ltd
  38 Thames Street, SUNBURY ON THAMES, Middlesex, TW16 6AF
• A.S.C. Telecom Ltd
  Asc House, Commerce Way, EDENBRIDGE, Kent, TN8 6ED
• Act
  77 Croydon Road, CATERHAM, Surrey, CR3 6PD
• Activa Solutions Ltd
  Activa House, Commerce Way, EDENBRIDGE, Kent, TN8 6ED
• Advance Phone Warehouse UK Ltd
  41 Balaam Street, LONDON, Greater London, E13 8EB
• Alcatel Pension Trustees Ltd
  Christchurch Way, LONDON, Greater London, SE10 0AG
• Alpha Lift Installations Ltd
  Unit 201 Lee Valley Technopark, Ashley Road, LONDON, Greater London, N17 9LN
• Alphatel
  123 Bickenhall Mansions, Bickenhall Street, LONDON, Greater London, W1U 6BT
• Applied Satellite Technology
  A M P House, Dingwall Road, CROYDON, Surrey, CR0 2LX
• Applied Satellite Technology Ltd
  Airport House, Purley Way, CROYDON, Surrey, CR0 0XZ
• Archway Trading Co Ltd
  502 Hornsey Road, LONDON, Greater London, N19 4EF
• Argyll Business Centres Head Office
  Arundel House, 31a ST. James's Square, LONDON, Greater London, SW1Y 4JR
• Aspen Electronics Ltd
  1-3 Kildare Close, RUISLIP, Middlesex, HA4 9UR
• Astarte Business Communications Ltd
  Lee Valley Technopark, Ashley Road, LONDON, Greater London, N17 9LN
• Aur Telephones
  260 Tottenham Court Road, LONDON, Greater London, W1T 7RF
• B-Dynamic Communications Ltd
  274 Hither Green Lane, LONDON, Greater London, SE13 6TT
• BMC Telecommunication Solutions
  123 Wickenden Road, SEVENOAKS, Kent, TN13 3NR
• BTS Holdings plc
  B T S House, 69-73 Manor Road, WALLINGTON, Surrey, SM6 0DD
• Bang & Olufsen (Croydon)
  2 Norfolk House, Wellesley Road, CROYDON, Surrey, CR0 1LH
• Barrington Technology Ltd
  Barrington House, 19 Church Road, EPSOM, Surrey, KT17 4DZ
• Bestway Communications Ltd
  Lee Valley Technopark, Ashley Road, LONDON, Greater London, N17 9LN
• 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
• Callsaver Telecoms Ltd
  20 Caledonian Road, LONDON, Greater London, N1 9DU
• Cardslot Ltd
  3 Rundell Crescent, LONDON, Greater London, NW4 3BS
• Cat Data Solutions
  41 Church Road, Harold Wood, ROMFORD, Essex, RM3 0JU
• Channell Commercial Europe Ltd
  Fairway, ORPINGTON, Kent, BR5 1EG
• Channell Ltd
  Fairway, ORPINGTON, Kent, BR5 1EG
• Chelsea Telecom Ltd
  3 Windmill House, Windmill Walk, LONDON, Greater London, SE1 8LX
• 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
• Coherent Research Ltd
  Unit 8 Princess Mews, Horace Road, KINGSTON UPON THAMES, Surrey, KT1 2SZ
• Commsense Advice
  11 Hartlepool Court, LONDON, Greater London, E16 2RL
• Communicatex Ltd
  196 High Road, LONDON, Greater London, N22 8HH
• Communication & Technical Services Ltd
  17 Pages Walk, LONDON, Greater London, SE1 4SB
• Compass Communications UK Ltd
  3 Lewis Road, SIDCUP, Kent, DA14 4NB
• Connect Communications Holdings Ltd
  Hertford House, 1 Cranwood Street, LONDON, Greater London, EC1V 9QP
• Countrywide Installations
  18 South Lane, NEW MALDEN, Surrey, KT3 5HT
• Cti Billing Solutions Ltd
  Nordic House, 120 High Street, PURLEY, Surrey, CR8 2AD
• Cti Data Solutions Ltd
  Nordic House, 120 High Street, PURLEY, Surrey, CR8 2AD
• D R D Communications Ltd
  Connect House, 21a Willow Lane, MITCHAM, Surrey, CR4 4NA
• Daltec Associates Ltd
  5 Oxford Road, Wealdstone, HARROW, Middlesex, HA3 7RG
• 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
• Dataphone Communications Ltd
  Riverside House Woodford Trading Estate, Southend Road, WOODFORD GREEN, Essex, IG8 8HQ
• Day Light Enterprise Ltd
  58 Knightland Road, LONDON, Greater London, E5 9HS
• Digicell Communications
  119 High Street, THORNTON HEATH, Surrey, CR7 8RZ
• 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
  5 Tulip Close, HAMPTON, Middlesex, TW12 3SA
• Diva Communications Ltd
  196 High Road, LONDON, Greater London, N22 8HH
• Dolphin Communications
  85 Kingsley Road, HOUNSLOW, Middlesex, TW3 4AH
• Dual Tech Communications
  196 High Road, LONDON, Greater London, N22 8HH
• 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
• Em: Seven Communications
  11 Chenies Street, LONDON, Greater London, WC1E 7EY
• Enzcom Solutions
  4 Maple Industrial Estate, Maple Way, FELTHAM, Middlesex, TW13 7AW
• Euro Worldwide Communications
  85 Kingsley Road, HOUNSLOW, Middlesex, TW3 4AH
• European Federal Bank Ltd
  Kemp House, 152-160 City Road, LONDON, Greater London, EC1V 2NX
• European Gateway
  140-142 King's Cross Road, LONDON, Greater London, WC1X 9DS
• European Moulin Rouge Ltd
  Kemp House, 152-160 City Road, LONDON, Greater London, EC1V 2NX
• Eurotraders UK Ltd
  Kemp House, 152-160 City Road, LONDON, Greater London, EC1V 2NX
• Evolution Voice & Data plc
  36 Groveeat ST. Helen's, LONDON, Greater London, EC3A 6AP
• Excell Business Systems
  53 Frith Street, LONDON, Greater London, W1D 4SN
• Excellent Communications Ltd
  50 Regent St, LONDON, Greater London, W1B 5RD
• FLR Spectron
  Orpington Trade Centre, Murray Road, ORPINGTON, Kent, BR5 3SS
• Fairlink Systems Ltd
  C1 Suttons Business Park, New Road, RAINHAM, Essex, RM13 8DE
• Flix
  16a Chelsea Wharf, Lots Road, LONDON, Greater London, SW10 0QJ
• Foneline
  28 High Road, ROMFORD, Essex, RM6 6PR
• Glovicom
  50 Regent St, LONDON, Greater London, W1B 5RD
• Granger Telecom
  Granger Corner, 1 Brooklands Road, WEYBRIDGE, Surrey, KT13 0SD
• Hadi Telecommunications
  45 Commercial Street, LONDON, Greater London, E1 6BD
• Hi Tech Network Solutions Ltd
  33 Rushworth Street, LONDON, Greater London, SE1 0RB
• I C S Telecomm UK Ltd
  67 Brick Lane, LONDON, Greater London, E1 6QL
• I D S Group
  2 Long Street, LONDON, Greater London, E2 8HJ
• 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
• Internal Communications Network Ltd
  268 Hackney Road, LONDON, Greater London, E2 7SJ
• Jeffrey C Black & Associates
  The Coach House, King Street, LONDON, Greater London, N2 8EA
• Jetstream Communications Ltd
  16 Elmtree Road, TEDDINGTON, Middlesex, TW11 8ST
• Jettcom
  Meridian House, Park Road, SWANLEY, Kent, BR8 8AH
• K T I T Ltd
  228 Merton Road, LONDON, Greater London, SW19 1EQ
• Kddi Eastern Europe Ltd
  Atlas House, 1-7 King Street, LONDON, Greater London, EC2V 8AU
• Kenton Research Ltd
  Unit 19 Bourne Road Industrial Park, Bourne Road, DARTFORD, Kent, DA1 4BZ
• Ketles.Com
  26 Abercorn Close, SOUTH CROYDON, Surrey, CR2 8TG
• Key Communication Systems Ltd
  Key House, 21 Bourne Road, BEXLEY, Kent, DA5 1LW
• 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
• Kynetix Technology Group
  A M P House, Dingwall Road, CROYDON, Surrey, CR0 2LX
• Latitude Communications
  50 Regent St, LONDON, Greater London, W1B 5RD
• Leonard-Carter Communications Ltd
  The Granary, 113 Lavender Walk, LONDON, Greater London, SW11 1JS
• London Central Communications Ltd
  81 Southwark Street, LONDON, Greater London, SE1 0HX
• M R S Communications
  92 Croydon Road, LONDON, Greater London, SE20 7AB
• Macfarlane Telesystems Ltd
  22-26 Albert Embankment, LONDON, Greater London, SE1 7TJ
• Magic Box Products Ltd
  The Grange, Market Square, WESTERHAM, Kent, TN16 1AR
• Meridian Options Systems Support Ltd
  69-71 Carshalton Road, SUTTON, Surrey, SM1 4LH
• Microtel Ltd
  Unit 19, Bourne Road Industrial Park, DARTFORD, Kent, DA1 4BZ
• Millway Communications
  Orchard Cottage, Barrow Green Road, OXTED, Surrey, RH8 9NE
• Mobestar Ltd
  1 Marylebone High Street, LONDON, Greater London, W10 4NB
• Mobyko Ltd
  Third Floor, 27 Beak Street, LONDON, Greater London, W1F 9RU
• Mojocom Systems Ltd
  Birchwood Cottage, Woldingham Road, Woldingham, CATERHAM, Surrey, CR3 7LR
• NSSL Ltd
  6 Gatton Park Business Centre, Wells Place, REDHILL, Surrey, RH1 3DR
• NTL
  Unit 5, Stafford Cross, CROYDON, Surrey, CR0 4TU
• Native Networks Ltd
  Christchurch Way, LONDON, Greater London, SE10 0AG
• Nera Satellite Services Ltd
  6 Gatton Park Business Centre, Wells Place, REDHILL, Surrey, RH1 3DR
• 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
• Open Telecommunications Ltd
  Lee Valley Technopark, Ashley Road, LONDON, Greater London, N17 9LN
• 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
• Peaceline Communications Ltd
  20 Detillens Lane, OXTED, Surrey, RH8 0DJ
• Pinnacle Communications Ltd
  60 Southwark Bridge Road, LONDON, Greater London, SE1 0AS
• Postfield Systems
  53 Ullswater CR, COULSDON, Surrey, CR5 2HR
• Postfield Systems
  Bushey Close, Old Barn Lane, KENLEY, Surrey, CR8 5AU
• Precision Telecom
  11 Reigate Road, ILFORD, Essex, IG3 9HD
• Premier Choice Telecom Ltd
  Premier Househurst Road, SIDCUP, Kent, DA15 9AE
• 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
• Rainbow Bizcom Connect Ltd
  The New Stables Hawley Manor, Hawley Road, DARTFORD, Kent, DA1 1PX
• Redwood Telecommunications
  Trade Tower, Coral Row, LONDON, Greater London, SW11 3UF
• Richmond Office Systems
  21-25 York Road, ILFORD, Essex, IG1 3AD
• Romtrac
  50 Featherstone Street, LONDON, Greater London, EC1Y 8RT
• S A S Telecoms
  Anchor Business Centre, 102 Beddington Lane, CROYDON, Surrey, CR0 4YX
• S W Communications
  38 Station Road, North Harrow, HARROW, Middlesex, HA2 7SE
• Scan Mobile
  85 Clerkenwell Road, LONDON, Greater London, EC1R 5AR
• Scribble Communications Ltd
  MWB Business Exchange, 2 Gayton Road, HARROW, Middlesex, HA1 2XU
• Sensorcom Ltd
  4 Thayers Farm Road, BECKENHAM, Kent, BR3 4LZ
• Simclair Imaging Systems
  Unit 4 Raven House, Ashgrove Estate, Ashgrove Rd, BROMLEY, Kent, BR1 4JW
• Sinclair Imaging Systems Ltd
  Unit 4 Raven House, Ashgrove Estate, Ashgrove Rd, BROMLEY, Kent, BR1 4JW
• Special Telephone Systems Ltd
  191 Hawley Road, DARTFORD, Kent, DA1 1PU
• Starlinc Ltd
  98 Beulah Hill, LONDON, Greater London, SE19 3XR
• Storacall Technology Ltd
  Swan House, 69-71 Windmill Road, SUNBURY ON THAMES, Middlesex, TW16 7DT
• Switchlab Ltd
  54 Marsh Wall, LONDON, Greater London, E14 9TP
• Sword Telecommunications Ltd
  218 Eversholt Street, LONDON, Greater London, NW1 1BD