Updated: Thursday the 24th of May, 2012 Call Systems:
Ackermann Ltd - Basildon
Advance Networks Limited - Leicester
Advanced Security Integration Limited - Blackburn
Agentphone Ltd - Head Office - Leighton Buzzard
Aid Call - Healthcare - Newton Abbot
Edge Telecom Limited - Shrewsbury
Focom Ltd - Berkhamsted
Leadline - Worcester
Live-Link Communications Ltd - Kirknewton
Modulo Advanced Security Devices - Naas
Purple Square Ltd - Godalming
Static Systems Group plc - Wombourne
Targon Technology Ltd - Mirfield