• 21st Century Business Phones Ltd
  33 Spencer Mews, LONDON, Greater London, W6 8PB
• 2mbs Ltd
  1 Chalgrove Halifax Way, WELWYN GARDEN CITY, Hertfordshire, AL7 2QJ
• A Star Solutions Ltd
  Business & Technology Centre, Bessemer Drive, STEVENAGE, Hertfordshire, SG1 2DX
• A Z Global Marketing
  6a Pavilion Parade, Wood Lane, LONDON, Greater London, W12 0HQ
• A.D.K. Communications Ltd
  7a The Maltings, Railway Place, HERTFORD, Hertfordshire, SG13 7JT
• Above The Horizon Ltd
  4 Meadowside, Woodside Road, WATFORD, Hertfordshire, WD25 0LB
• Absolute Internet Consultants Ltd
  Flat 8 Sherbourne Court, 46 Beaconsfield Road, ST ALBANS, Hertfordshire, AL1 3RB
• Abytel Ltd
  42 Poynter Road, ENFIELD, Middlesex, EN1 1DL
• Access Networks Solutions Ltd
  Devlin House, 36 St George Street, LONDON, , W1S 2FW
• Accurate Support Ltd
  99 Hollowfield Walk, NORTHOLT, Middlesex, UB5 5SY
• Achieving Results Ltd
  90 Penshurst Gardens, EDGWARE, Middlesex, HA8 9TU
• Activisys
  47-49 Park Royal Road, LONDON, Greater London, NW10 7LQ
• Acuity Internet Ltd
  24 Doncaster Drive, NORTHOLT, Middlesex, UB5 4AY
• Ad Communication Ltd
  171 Peckham High Street, Peckham, LONDON, Greater London, SE15 5SL
• Adcall plc
  24 Oakleigh Park North, LONDON, Greater London, N20 9AR
• Advertise Ltd
  10 Cressex Enterprise Centre, Lincoln Road, Cressex Business Park, HIGH WYCOMBE, Buckinghamshire, HP12 3RL
• Affinity Business Communications Ltd
  10 Bishops Close, BARNET, Hertfordshire, EN5 2QH
• Affle Ltd
  1 Stanford Road London, LONDON, Greater London, W8 5PP
• Ag Internet Trading Ltd
  34 Highland Road, AMERSHAM, Buckinghamshire, HP7 9AX
• Ahava Internet Cafe Ltd
  10a Reighton Road, Hackney, LONDON, Greater London, E5 8SG
• Airwide Solutions Holdings Ltd
  5th Floor Alder Castle, 10 Noble Street, LONDON, Greater London, EC2V 7QL
• Alcom Enterprises Ltd Taalcom Computing
  28 Red Lion Street, CHESHAM, Buckinghamshire, HP5 1EZ
• Allsorts Solutions
  500 High Road, LONDON, Greater London, N17 9JF
• Almeria Networks Ltd
  BLM Salisbury House, London Wall, LONDON, Greater London, EC2M 3QB
• Ambient Communications Ltd
  Priory House, Marsh Road Alperton Lane, WEMBLEY, Middlesex, HA0 1ES
• Andrew Michaelides
  57 Hale Drive, LONDON, Greater London, NW7 3EL
• Anlemma Ltd
  40 Abbots Road, ABBOTS LANGLEY, Hertfordshire, WD5 0BG
• Annodata Business Communications
  1 ST. Albans Enterprise Centre, Long Spring, Porters Wood, ST ALBANS, Hertfordshire, AL3 6EN
• Apex Global Trading Ltd
  256 Farnham Road, SLOUGH, Berkshire, SL1 4XL
• Aria Telecom Ltd
  2nd Floor 20 Iron Monger Lane, LONDON, Greater London, EC2V 8EP
• Armadillo Managed Services Ltd
  8 The Square, Stockley Park, UXBRIDGE, Middlesex, UB11 1FW
• Aro Consultancy Ltd
  26 Montagu House, 109 Whitfield Street, LONDON, Greater London, W1T 4HJ
• Arqiva
  Chalfont Grove, Narcot Lane, Chalfont St Peter, GERRARDS CROSS, Buckinghamshire, SL9 8TW
• Ascend Networks Ltd
  25 Hawtrey Avenue, NORTHOLT, Middlesex, UB5 5JB
• Associated Network Solutions
  707 High Road, LONDON, Greater London, N12 0BT
• Astracom Ltd
  12 Wentworth Close, WATFORD, Hertfordshire, WD17 4LW
• At & T Business Communications
  Landsdowne House, Berkeley Square, LONDON, Greater London, W1J 6ER
• Atlanta Technology
  20a Brownlow Mews, LONDON, Greater London, WC1N 2LD
• Atlas Internet
  10 Greenland St, LONDON, Greater London, NW1 0ND
• Axia Communications Ltd
  111 ST. Albans Road, WATFORD, Hertfordshire, WD17 1UH
• Axia Computer Systems Ltd
  111 ST. Albans Road, WATFORD, Hertfordshire, WD17 1UH
• Axianet Ltd
  111 ST. Albans Road, WATFORD, Hertfordshire, WD17 1UH
• Axis Employee Communications Ltd
  Southwark Street, LONDON, , SE1 1UN
• Azaka & Associates Ltd
  209 Toddington Road, LUTON, Bedfordshire, LU4 9EB
• Beebug Ltd
  117 Hatfield Road, ST ALBANS, Hertfordshire, AL1 4JS
• Bespoke Internet & Business Solutions Ltd
  623 Uxbridge Road, HAYES, Middlesex, UB4 8HR
• Bethlehem Technologies London Ltd
  No 6 30 Harrington Gardens, LONDON, Greater London, SW7 9LT
• Bis Ltd
  38 St Mary Axe, LONDON, Greater London, EC3A 8BH
• Blackgate Communications Ltd
  19 Park Parade, LONDON, Greater London, NW10 4JH
• Blue Angel Solutions
  198 De Havilland Road, EDGWARE, Middlesex, HA8 5QD
• Blue Sky Telecom Solutions Ltd
  Purcells Accountants, 4 Quex Road, LONDON, Greater London, NW6 4PS
• Bluechip Solutions
  35 Hornhill Road, Maple Cross, RICKMANSWORTH, Hertfordshire, WD3 9TE
• Bluefire Consultancy Ltd
  115a Rusthall Avenue, Chiswick London, LONDON, Greater London, W4 1BN
• Blyk
  51-53 Great Marlborough Street, 4th Floor, London, , W1F 7JT
• Boltblue plc
  PO Box 52769, London, Greater London, EC2P 2UW
• Bright Blue Internet Ltd
  18 Northall Close, Eaton Bray, DUNSTABLE, Bedfordshire, LU6 2EB
• British Monomarks Ltd
  27 Old Gloucester Street, LONDON, Greater London, WC1N 3AF
• Budget Numbers Ltd
  2 Aran Close, HARPENDEN, Hertfordshire, AL5 1SW
• Buffalo Technology UK Ltd
  176 Buckingham Avenue, SLOUGH, Berkshire, SL1 4RD
• Building Intelligence Ltd
  The Old Truman Brewery, 91 Brick Lane, LONDON, Greater London, E1 6QL
• Buongiorno Marketing Services UK Ltd
  28-30 Kirby Street, LONDON, Greater London, EC1N 8TE
• Business Enterprise Technologies Ltd
  3rd Floor Anderson House, 27 Peterborough Road, HARROW, Middlesex, HA1 2AX
• Business For Breakfast
  172 Whitmore Road, HARROW, Middlesex, HA1 4AQ
• C Hear (Europe) Ltd
  16 Hewett Street, LONDON, Greater London, EC2A 3NN
• C Hear Technologies
  16 Hewett Street, LONDON, Greater London, EC2A 3NN
• CPD Telecom & Electrical Services
  Brentmead House, Britannia Road, LONDON, Greater London, N12 9RS
• CPW Network Services Ltd
  80 Hammersmith Road, LONDON, , W14 8UD
• CSB Roofing Solutions Ltd
  Business & Technology Centre, Bessemer Drive, STEVENAGE, Hertfordshire, SG1 2DX
• CVR Communications Ltd
  17 Meadfield Road Langley, SLOUGH, Berkshire, SL3 8HW
• Cabcon
  Coronation Road, Cressex Business Park, HIGH WYCOMBE, Buckinghamshire, HP12 3TA
• Cablelink UK Ltd
  Lisle Road, HIGH WYCOMBE, Buckinghamshire, HP13 5SH
• Cabletron Systems Ltd
  Ingersoll House, 9 Kingsway, LONDON, Greater London, WC2B 6XF
• Cabot Recruitments Ltd
  30 Purbrook Estate, Tower Bridge Road, LONDON, Greater London, SE1 3BZ
• Call Link Telecommunications Ltd
  3 Doghurst Avenue, Harlington Hayes, HAYES, Middlesex, UB3 5BJ
• Call Shop Plus
  3 Pyecombe Corner, LONDON, Greater London, N12 7AJ
• Callmonitor Ltd
  252 Uxbridge Road, Mill End, RICKMANSWORTH, Hertfordshire, WD3 8EA
• Cameron Durley Consulting
  Unit 5 Smug Oak Green, Business Centre Lye Lane, Bricket Wood St Albans, ST ALBANS, Hertfordshire, AL2 3UG
• Capua Computers
  17 Suffolk Close, SLOUGH, Berkshire, SL1 6JN
• Capua Ltd
  17 Suffolk Close, SLOUGH, Berkshire, SL1 6JN
• Cardonet Ltd
  70-78 York Way, LONDON, Greater London, N1 9AG
• Careline Financial Services Ltd
  250 Gunnersbury Avenue, LONDON, Greater London, W4 5QB
• Carevision plc
  5 Old Garden Court, ST ALBANS, Hertfordshire, AL3 4RQ
• Catek Distribution
  10 Greenlands, Flackwell Heath, HIGH WYCOMBE, Buckinghamshire, HP10 9PL
• Cedar PMPL Ltd
  Old Bank House, 39 High Street, HIGH WYCOMBE, Buckinghamshire, HP11 2AG
• Centre Core Ltd
  1 Virginia Street, LONDON, Greater London, E98 1TH
• Challow Design & Networking Services Ltd
  Unit 8a Kings Exchange, Tileyard Road, LONDON, Greater London, N7 9AH
• Chatterbox Software Ltd
  4 Hospital Hill Waterside, CHESHAM, Buckinghamshire, HP5 1PJ
• Chelsci Ltd
  77 Ferrier Road, STEVENAGE, Hertfordshire, SG2 0PA
• Chilcomp Ltd
  16 Station Road, CHESHAM, Buckinghamshire, HP5 1DH
• Christian Broadcasting Corporation Ltd
  24 Cissbury Ring North, Woodside Park, LONDON, Greater London, N12 7AN
• Christie Consortium Ltd
  1 Christchurch Avenue, WEMBLEY, Middlesex, HA0 4DU
• City Cell Ltd
  264-267 Tottenham Court Road, LONDON, Greater London, W1T 7RH
• Colonial Capital Corporation
  New Loom House, 101 Back Church Lane, LONDON, Greater London, E1 1LU
• Com - Tel Global Solutions Ltd
  Unit 3, Plaza Parade, WEMBLEY, Middlesex, HA0 4YT
• Com-Cen Ltd
  34 Northfield, HATFIELD, Hertfordshire, AL10 0AQ
• Cometrics Ltd
  2a Disraeli Road, Ealing, LONDON, Greater London, W5 5HP
• Communication Devices International
  3 Eghams Court, Boston Drive, BOURNE END, Buckinghamshire, SL8 5YS
• Communication Today Ltd
  21 Aylmer Parade, Aylmer Road, LONDON, Greater London, N2 0AT
• Communications & Network Consulting
  Bedford House, 3 Bedford Street, LONDON, Greater London, WC2E 9HD
• Communications Link
  Gainsborough House, 33 Throgmorton Street, LONDON, Greater London, EC2N 2BR
• Communications Network Ltd
  Unit 2 26 Clayton CR, BRENTFORD, Middlesex, TW8 9PT
• Comunicomm Ltd
  461 London Road, HIGH WYCOMBE, Buckinghamshire, HP11 1EL
• Conalway Ltd
  6th Floor Queens House, 55/56 Lincoln's Inn Fields, LONDON, Greater London, WC2A 3LJ
• Concerto Telecom Ltd
  45 Embry Way, STANMORE, Middlesex, HA7 3AY
• Connecting London Ltd
  80 Old Brompton Road, LONDON, , SW7 3LQ
• Continuation Computers Ltd
  New Court, ST. Swithens Lane, LONDON, Greater London, EC4P 4DY
• Convergent Network Solutions
  64 Cannon Street, LONDON, Greater London, EC4N 6AE
• Cool Fire Communications Ltd
  389 Greenford Avenue, Hanwell, LONDON, Greater London, W7 1JJ
• Core Communications Europe Ltd
  27 Belsize Lane, Hampstead, LONDON, Greater London, NW3 5AS
• Corporact
  Blackwell House, Guildhall Yard, LONDON, Greater London, EC2V 5AE
• Cortel Ltd
  2 Lots Road, Chelsea, LONDON, Greater London, SW10 0QF
• Cost Containment Consultancy Ltd
  121 Green End Lane, HEMEL HEMPSTEAD, Hertfordshire, HP1 2AX
• Creative Imporia Ltd
  202 Vicarage Farm Road, Heston, HOUNSLOW, Middlesex, TW5 0DP
• Crystaline Communications Ltd
  116 Oaklands Road, LONDON, , W7 2DX
• Cute Solutions
  Tivendale, 17 Brook Road, LONDON, Greater London, N8 7AA
• Cwnetworks Ltd
  Unit 5 Horseshoe Business Park, Upper Lye Lane Bricket Wood, ST ALBANS, Hertfordshire, AL2 3TA
• Cyan Communications
  119 Wardour St, LONDON, Greater London, W1F 0UQ
• Cyber World Cafe Ltd
  62 Pursley Road, LONDON, Greater London, NW7 2BS
• Cybergate Network & Data Communications
  3 Leigh Street, LONDON, Greater London, WC1H 9EW
• Cyta
  45 Hawthorn Avenue, LONDON, Greater London, N13 4JS
• D D I Communications Solutions
  London House, 271 King Street, LONDON, Greater London, W6 9LZ
• DRF Enterprises Ltd
  67 Elmbank Way, Hanwell, LONDON, Greater London, W7 3DF
• Data Gods J F O Ltd
  Unit 3 Warrenwood Industrial Estate, Stapleford, HERTFORD, Hertfordshire, SG14 3NU
• Data Integration Ltd
  Units A/B, Point Pleasant, LONDON, Greater London, N17 8AQ
• Data Room Supplies
  Conbar House, Mead Lane, HERTFORD, Hertfordshire, SG13 7AP
• Datasat Communications Ltd
  Ashbourne, Back Lane, CHALFONT ST GILES, Buckinghamshire, HP8 4NY
• Datasat Communications Ltd
  Great North Road, Brookmans Park, HATFIELD, Hertfordshire, AL9 6NE
• Datis International Ltd
  4 Rothley Court, 2 St. Johns Wood Road, LONDON, Greater London, NW8 8UL
• Deborahs Internet Services
  38 Westbourne Grove, LONDON, Greater London, W2 5SH
• Delfi Communications Ltd
  893 Plymouth Road, SLOUGH, Berkshire, SL1 4LP
• Delight & Prosper
  211 Piccadilly, LONDON, Greater London, W1J 9HF
• Deltacom International Ltd
  1 The Broadway, SOUTHALL, Middlesex, UB1 1JR
• Demetel Ltd
  46 Pear Tree Walk, Cheshunt, WALTHAM CROSS, Hertfordshire, EN7 6RQ
• Designs In Motion
  211 Piccadilly, LONDON, Greater London, W1J 9HF
• Dietz Fraser & Partners International
  43-44 Berners St, LONDON, Greater London, W1T 3ND
• Digi-Tel Communications UK Ltd
  39 Crosslands, Caddington, LUTON, Bedfordshire, LU1 4EP
• Digital Connect Ltd
  Unit 813, Northway House, 1379 High Road Whetstone, LONDON, , N20 9LP
• Digital Mail Ltd
  70-74 City Road, LONDON, Greater London, EC1Y 2BJ
• Direct Trading Solutions Ltd
  London House, 271 King Street, LONDON, Greater London, W6 9LZ
• Discovery Networks
  42 Westmere Drive, LONDON, Greater London, NW7 3HE
• Easycomp
  Flat 29, Chelsea Court, LONDON, Greater London, SW10 9QW
• Easycomp Ltd
  Flat 29, Chelsea Court, LONDON, Greater London, SW10 9QW
• Easynet
  1 Brick Lane, LONDON, Greater London, E1 6PU
• Eckoh UK Ltd
  Telford House, Corner Hall, HEMEL HEMPSTEAD, Hertfordshire, HP3 9HN
• Eclipse Telecommunications
  Unit 405, Montrose Avenue, SLOUGH, Berkshire, SL1 4TJ
• Ecomax Electronics Ltd