• Acorn Data Networks
  43b Clare Crescent, BALDOCK, Hertfordshire, SG7 6JR
• Adafone
  B 22 Station Road, Lower Stondon, HENLOW, Bedfordshire, SG16 6JP
• Adk Communications
  33 Lilbourne Drive, HERTFORD, Hertfordshire, SG13 7WS
• Avoco
  18 Walsworth Road, HITCHIN, Hertfordshire, SG4 9SP
• Boltons
  Mitre Close, BEDFORD, Bedfordshire, MK41 0SS
• C.D.I Associates
  46 Deep Spinney, Biddenham, BEDFORD, Bedfordshire, MK40 4QH
• Garnell Corporate Communications
  Morrell Court, Brownfields, WELWYN GARDEN CITY, Hertfordshire, AL7 1AY
• Lambdalink Ltd
  91 West Drive, Highfields Caldecote, CAMBRIDGE, Cambridgeshire, CB23 7RY
• Mediation Technology
  2 Sidney Gardens, Haslingfield, CAMBRIDGE, Cambridgeshire, CB23 1NA
• Phase2 Microwave Ltd
  Belmont Precision Engineerin, Boulton Road, STEVENAGE, Hertfordshire, SG1 4QX
• Premier 786 Services (Zimbabwe) Ltd
  54 Leagrave Road, LUTON, Bedfordshire, LU4 8HZ
• Premier Telecom UK Ltd
  54 Leagrave Road, LUTON, Bedfordshire, LU4 8HZ
• R R K Ltd
  Priory Lodge, Wratten Road East, HITCHIN, Hertfordshire, SG5 2AS
• Susan Salas Consulting Ltd
  18 Walsworth Road, HITCHIN, Hertfordshire, SG4 9SP